Black pod and other phytophthora induced diseases of cacao: History, biology, and control

Cacao Diseases: A History of Old Enemies and New Encounters

Volumn , Issue , 2016, Pages 213-266

  Surujdeo Maharaj, S ^a   Sreenivasan, T N ^a   Motilal, L A ^a   Umaharan, P ^a  

^a UNIVERSITY OF THE WEST INDIES   (Trinidad and Tobago)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 84978250289     PISSN: None     EISSN: None     Source Type: Book    
DOI: 10.1007/978-3-319-24789-2_7     Document Type: Chapter

References (306)

1. Abad, Z. G., & Coffey, M. (2008). Development of a morphological-phylogenetic Lucid key for the identification of oomycetes: Phytophthora. In 3rd International Phytophthora, Pythium and related genera workshop: Integration of traditional and modern approaches for investigating the taxonomy and evolution of the Oomycetes, 23-24 August, Turin, Italy.
2. Abad, Z. G., Coffey, M. D., Oudemans, P. V., Mann in’t Veld, W. A., de Gruyter, H., Cunnington, J., & Louws, F. J. (2008). Phytophthora bisheria sp. nov., a new species identified in isolates from the Rosaceous raspberry, rose and strawberry in three continents. Mycologia, 100, 99-110. doi:10.3852/mycologia.100.1.99.
3. Adebayo, A. A. (1971). A technique of inoculation of fixed cocoa pods with P. palmivora (Butl.) Butl. Turrialba, 21, 280-282.
4. Adegbola, M. O. K. (1981) Cocoa diseases of West Africa. In: Proceedings of the 7th International Cocoa Research Conference, Douala, Cameroon, 5-12 November 1979, pp. 243-250.
5. Aitken, W. M., & Lass, R. A. (1975). Cocoa in Brazil. Cocoa Growers’ Bulletin, 23, 4-17.
6. Akinrefon, O. A. (1971). Studies on the varietal reaction of cacao in Nigeria to P. palmivora (Butl.) Butl. Phytopathologische Zeitschrift, 70, 359-365.
7. Akrofi, A. Y., Appiah, A. A., & Opoku, I. Y. (2003). Management of Phytophthora pod rot disease on cocoa farms in Ghana. Crop Protection, 22(3), 469-477.
8. Amponsah, J. D. (1970). Preliminary studies of a laboratory method for screening cocoa seedlings for black-pod disease resistance. Report Cocoa Research Institute of Ghana, 1968-69, pp. 106-110.
9. Amponsah, J. D., & Asare-Nyako, A. (1972). Laboratory method for screening cocoa seedlings for black pod resistance. Report Cocoa Research Institute of Ghana, 1969-70, pp. 155-158.
10. Amponsah, J. D., & Asare-Nyako, A. (1973). Glasshouse method for screening seedlings of cocoa (Theobroma cacao L.) for resistance to black pod caused by P. palmivora (Butl.) Butl. Tropical Agriculture (Trinidad), 50, 143-152.
11. Appiah, A., Flood, J., Archer, S. A., & Bridge, P. D. (2004). Molecular analysis of the major Phytophthora species on cocoa. Plant Pathology, 53, 209-219. doi:10.1111/j.1365-3059.2004.00980.x.
12. Appiah, A., Flood, J., Bridge, P. D., & Archer, S. A. (2003). Inter and intra specific morphometric variation and characterization of Phytophthora isolates from cocoa. Plant Pathology, 52, 168-180.
13. Aragaki, M., & Uchida, J. (2001). Morphological distinctions between Phytophthora capsici and P. tropicalis sp. nov. Mycologia, 93, 137-145.
14. Ashby, S. F. (1920). Notes on two diseases of the coconut palm in Jamaica, caused by fungi of the genus Phytophthora. West Indian Bulletin, 18, 61-73.
15. Ashby, S. F. (1929). Strains and taxonomy of Phytophthora palmivora Butler (P. Faberi Maubl.). Transactions of the British Mycological Society, 14(1-2), 18-38. doi:10.1016/S0007-1536(29)80025-3.
16. Asomaning, E. J. A. (1964). Varietal resistance of cocoa (Theobroma cacao L.) to root infection by Phytophthora palmivora. Tropical Agriculture (Trinidad), 41, 251-256.
17. Asomaning, E. J. A., & Wharton, A. L. (1963). Root infection of cocoa by Phytophthora palmivora Butl. Studies on varietal resistance to root infection. Annual Report of the West Africa Cocoa Research Institute, 1961-62, pp. 27-28.
18. Bakala, J. (1981). Distribution of the Morphological types of Phytophthora palmivora (Butl.) Butl. in Cameroun. In: Proceedings of the 7th International Cocoa Research Conference, Douala, Cameroon, 5-12 November 1979, pp. 297-301.
19. Baker, R. E. D. (1936). Notes on Trinidad fungi. 1 Phytophthora. Tropical Agriculture (Trinidad), 13, 330-332.
20. Barreto, M. A., Santos, J. C. S., Corrêa, R. X., Luz, E. D. M. N., Marelli, J., & Souza, A. P. (2015). Detection of genetic resistance to cocoa black pod disease caused by three Phytophthora species. Euphytica. doi:10.1007/s10681-015-1490-4.
21. Bartnicki-Garcia, S. (1969). Cell wall differentiation in the Phycomycetes. Phytopathology, 59, 1065-1071.
22. Bartnicki-Garcia, S. (1973). Cell wall genesis in a natural protoplast: The zoospore of Phytophthora palmivora. In J. R. Villanueva, I. Garcia-Acha, S. Gascon, & F. Uruburu (Eds.), Yeast, mould and plant protoplasts (pp. 77-91). London: Academic.
23. Bartnicki-Garcia, S., & Wang, M. C. (1983). Biochemical aspects of morphogenesis in Phytophthora. In D. C. Erwin, S. Bartnicki-Garcia, & P. H. Tsoa (Eds.), Phytophthora. Its biology, taxonomy, ecology and pathology (pp. 121-137). St. Paul, MN: American Phytopathological Society.
24. Beakes, G. W., Glockling, S. L., & Sekimoto, S. (2012). The evolutionary phylogeny of the oomycete “fungi”. Protoplasma, 249(1), 3-19. doi:10.1007/s00709-011-0269-2.
25. Beakes, G. W., & Sekimoto, S. (2009). The evolutionary phylogeny of oomycetes-insights gained from studies of holocarpic parasites of algae and invertebrates. In K. Lamour & S. Kamoun (Eds.), Oomycete genetics and genomics: Diversity, interactions and research tools (pp. 1-24). New York: Wiley.
26. Bimpong, C. E., & Clerk, G. C. (1970). Motility and chemotaxis in zoospores of Phytophthora palmivora (Butl.) Butl. Annals of Botany, 34, 617-624.
27. Bimpong, C. E., & Hickman, C. J. (1975). Ultrastructural and cytochemical studies of zoospores, cysts, and germinating cysts of Phytophthora palmivora. Canadian Journal of Botany, 53(13), 1310-1327.
28. Blackwell, E. (1949). Terminology in Phytophthora. Mycological Paper 30. C.M.I. Kent, Surrey, England, 24 pp.
29. Blaha, G. (1967). P. palmivora (Butl.) Butl: Variation de la pathogénie en function de la source de l’inoculum. Café Cacao Thé, 11, 331-336.
30. Blaha, G. (1971). Contribution a l’etude de la sensibilite du cacaoyer a P. palmivora au Cameroon. In: Proceedings of the 3rd International Cocoa Research Conference, Accra, Ghana, 23-- 29 November, 1969, pp. 410-421.
31. Blaha, G. (1972). Recherche de cultivars resistants a P. palmivora: etude comparative des reactions aux infections experimentales effectuees sur cabosses. In: Proceedings of the 4th International Cocoa Research Conference, St. Augustine, Trinidad, 8-18 January, 1972, pp. 435-445.
32. Blaha, G. (1974). Methods of testing for resistance. In P. H. Gregory (Ed.), Phytophthora disease of cocoa (pp. 179-195). London: Longman.
33. Blaha, G., & Lotodé, R. (1977). Contribution à la connaissance des modalitiés de la transmission héréditaire de la résistance du cacaoyer à la pourriture brune des cabosses (P. palmivora) au Cameroun. Café Cacao Thé, 21, 179-196.
34. Blair, J. E., Coffey, M. D., Park, S. Y., Geiser, D. M., & Kang, S. (2008). A multi-locus phylogeny for Phytophthora utilizing markers derived from complete genome sequences. Fungal Genetics and Biology, 45(3), 266-277.
35. Blencowe, J. W., & Wharton, A. L. (1961). Black pod disease in Ghana: Incidence of the disease in relation to levels of productivity. In: Report of the West African Cocoa Research Institute of Ghana, 1959-60, pp. 24-29.
36. Boccas, B. R. (1981). Interspecific crosses between closely related heterothallic Phytophthora species. Phytopathology, 71, 60-65.
37. Bowden, J. (1961). Responses of cocoa to copper sprays in Ghana. Tropical Agriculture (Trinidad), 38, 325-331.
38. Bowers, J. H., Martin, F. N., Tooley, P. W., & Luz, E. D. M. N. (2007). Genetic and morphological diversity of temperate and tropical isolates of Phytophthora capsici. Phytopathology, 97, 492-503.
39. Brasier, C. M., & Griffin, M. J. (1979). Taxonomy of Phytophthora palmivora on cocoa. Transactions of the British Mycological Society, 72, 111-143.
40. Brasier, C. M., & Hansen, E. M. (1992). Evolutionary biology of Phytophthora. II. Phylogeny, speciation, and population structure. Annual Review of Phytopathology, 30, 173-200.
41. Brasier, C. M., & Medeiros, A. G. (1978). The karyotype of Phytophthora palmivora Morphological Form 4. Transactions of the British Mycological Society, 70, 295-297.
42. Briton-Jones, H. R. (1934). The diseases and curing of cacao. London: Macmillan.
43. Butler, E. J. (1907). An account of the genus Phtyium and some Chytridiaceae. Memoirs of the Department of Agriculture in India. Botanical Series, 1, 1-106.
44. Butler, E. J. (1919). Report of the Imperial Mycologist, 1918-1919. Scientific Report of the Research Institute Pusa 1918-1919, p. 82
45. Campêlo, A. M. F. L., Luz, E. D. M. N., & de Resnick, F. C. Z. (1982). Podridão-parda do cacaueiro, nos Estados da Bahia, Brasil. 1 - virulencia das especies de Phytophthora. Revisita Theobroma, CEPEC, Itabuna-Brasil, Ano 12, pp. 1-6.
46. Carruthers, L. B. (1898). Cacao and its enemies in Ceylon. Tropical Agriculturist, 18, 359-505.
47. Chant, S. R. (1957). A dieback of cacao seedlings in Nigeria caused by a species of Phytophthora. Nature, 180, 1494-1495.
48. Chee, K. H., & Wastie, R. L. (1970). Black pod disease of cocoa. Planter, Kuala Lumpur, 46, 294-297.
49. Chowdappa, P., Brayford, D., Smith, J., & Flood, J. (2003). Molecular discrimination of Phytophthora isolates on cocoa and their relationship with coconut, black pepper and bell pepper isolates based on rDNA repeat and AFLP fingerprints. Current Science, 84(9), 1235-1238.
50. Chowdappa, P., & Chandramohanan, R. (1995). Electrophoretic protein patterns of three species of Phytophthora associated with black pod disease of cocoa (Theobroma cacao L.). Journal of Biosciences, 20, 637-644.
51. Chowdappa, P., & Chandramohanan, R. (1996). Phytophthora citrophthora from cocoa in India. Tropical Agriculture (Trinidad), 73, 158-160.
52. Chowdappa, P., & Chandramohanan, R. (1997). Occurrence and distribution of mating types of Phytophthora species causing black pod disease of cocoa. Indian Phytopathology, 50(2), 256-260.
53. Coleman, L. C. (1910). Diseases of Areca palm (Areca catechu L.). 1. Kolerogaor rot disease. Annales Mycologici (Berlin), 8, 591-626.
54. Cooke, D. E. L., Drenth, A., Duncan, J. M., Wagels, G., & Brasier, C. M. (2000). A molecular phylogeny of Phytophthora and related oomycetes. Fungal Genetics and Biology, 30, 17-32.
55. Curzi, M. (1927). L’eziologia della ‘cancrena pedale’ del Capsicum annuum (The etiology of foot rot of Capsicum annuum). Rivista di Patologia Vegetale 17: 1-19. (In Italian). (Review of Applied Mycology 1927 6: 333.)
56. Dade, H. A. (1927). Economic significance of cacao pod diseases and factors determining their incidence and control. Department of Agriculture Gold Coast Bulletin, 6, 58.
57. Dade, H. A. (1928). The relationship between diseased cushions and the seasonal outbreak of ‘black pod’ disease. Department of Agriculture Gold Coast Bulletin, 13, 85-88.
58. Dade, H. A. (1929). Origin and spiral arrangement of cushions in cacao. Department of Agriculture Gold Coast Bulletin, 16, 147-150.
59. Dakwa, J. T. (1988). A serious outbreak of the black pod disease in a marginal area of Ghana. In: Cocoa Producers’ Alliance (Eds.), Proceedings of the Tenth International Cocoa Research Conference (pp. 447-451), 1987, Santa Domingo: Dominican Republic.
60. de Bary, A. (1881). Zur Kenntniss der Peronosporeen (Information on peronosporas). Botanische Zeitung. 39:585-625; 601-609; 617-625. (In German).
61. Desjardins, P. R., Zentmyer, G. A., & Reynolds, D. A. (1969). Electron microscopic observations of the flagellar hairs of Phytophthora palmivora zoospores. Canadian Journal of Botany, 47, 1077-1079.
62. Despréaux, D. (2004). Phytophthora diseases of Theobroma cacao. In C. Cilas & D. Despréaux (Eds.), Improvement of cocoa tree resistance to Phytophthora diseases (pp. 15-44). France: CIRAD.
63. Dick, M. W. (1992). Patterns of phenology in population of zoosporic fungi. In G. C. Carroll & D. T. Wicklow (Eds.), The fungal community. Its organization and role in the ecosystem (pp. 355-382). New York: Marcell Dekker.
64. Djiekpor, E. K., Goka, K., Lucas, P., & Partiot, M. (1981). Cocoa black pod rot caused by Phytophthora sp. in Togo: Assessment and control strategies. Cafe Cacao Thé, 25(4), 263-268.
65. Dobrowolski, M. P., Tommerup, I. P., & O’Brien, P. A. (1998). Microsatellites in the mitochondrial genome of Phytophthora cinnamomi failed to provide highly polymorphic markers for population genetics. FEMS Microbiology Letters, 163, 243-248.
66. Donahoo, R., Blomquist, C. L., Thomas, S. L., Moulton, J. K., Cooke, D. E. L., & Lamour, K. H. (2006). Phytophthora foliorum sp. nov., a new species causing leaf blight of azalea. Mycological Research, 110, 1309-1322.
67. Donahoo, R. S., & Lamour, K. H. (2008a). Interspecific hybridization and apomixis between Phytophthora capsici and Phytophthora tropicalis. Mycologia, 100(6), 911-920. doi:10.3852/08-028.
68. Donahoo, R. S., & Lamour, K. (2008b). Characterization of Phytophthora species from leaves of nursery woody ornamentals in Tennessee. Hortscience, 43, 1833-1837.
69. Drenth, A., & Guest, D. (2013). Phytophthora palmivora in tropical tree crops. In K. Lamour (Ed.), Phytophthora: A global perspective (pp. 187-196). Oxfordshire: CABI Publishing.
70. Ducamp, M., Nyassé, S., Grivet, L., Thevenin, J.-M., Blaha, G., Despreaux, D., & Cilas, C. (2004). Genetic diversity of cocoa tree Phytophthora pathogens. In C. Cilas & D. Despreaux (Eds.), Improvement of cocoa tree resistance to Phytophthora diseases (p. 45e75). Montpellier: Reperes, Cirad.
71. Elliot, C. G. (1983). Physiology of sexual reproduction in Phytophthora. Pages 71-80 in.. D. C. Erwin, S. Bartnicki-Garcia, & P. H. Tsao (Eds.), Phytophthora: Its biology, taxonomy, ecology, and pathology. St. Paul, MN: American Phytopathological Society, 392 pp.
72. Enríquez, C. G., & Soria, V. J. (1967). Selección y estudio de los carácteres útiles de la flor para la identificación y descripción de cultivares de cacao. Cacao (Costa Rica), 12, 8-16.
73. Enzenbacher, T. B., Naegele, R. P., & Hausbeck, M. K. (2015). Susceptibility of greenhouse ornamentals to Phytophthora capsici and P. tropicalis. Plant Disease 99 May 2015 First Look. http://dx.doi.org/10.1094/PDIS-03-15-0333-RE
74. Érsek, T., & Ribeiro, O. K. (2010). An annotated list of new Phytophthora species described post 1996. Acta Phytopathologica et Entomologica Hungarica, 45, 251-266.
75. Erselius, L. J., & De Vallavieille, C. (1984). Variation in protein profiles of Phytophthora: Comparison of six species. Transactions of the British Mycological Society, 83, 463-472.
76. Erwin, D. C., & Ribeiro, O. K. (1996). Phytophthora diseases worldwide. St. Paul, MN: The American Phytopathological Society.
77. Erwin, D. C., & Ribeiro, O. K. (2005). Phytophthora diseases worldwide (p. 562). St. Paul, MN: APS Press.
78. Eskes, A. (2001). Collaborative activities on cocoa germplasm utilization and conservation supported by the CFC/ICCO/IPGRI project. In: Proceedings of the 13th International Cocoa Research Conference, Kota Kinabalu, Malaysia, 9-14 October 2000, pp. 23-30.
79. Evans, H. E. (1971). Transmission of Phytophthora pod rot of cocoa by invertebrates. Nature, 232, 346-347.
80. Fagan, H. J. (1984). An assessment of pathological research on cocoa in Jamaica from 1950-1980 and current research priorities. Tropical Pest Management, 30(4), 430-439.
81. Faleiro, F. G., Luz, E. D. M. N., Cerqueira, A. O., Rocha, C. S. S., Dantas Neto, A., Flores, A. B., Bahia, R. C. S., & Faleiro, A. S. G. (2004). Caracterização e diversidade genética de isolados de Phytophthora spp. do cacaueiro com base em marcadores RAPD. Fitopatologia Brasileira, 29, 303-306.
82. Filani, G. A. (1973). The chemical control of P. palmivora in Nigeria: An evaluation of present situation. ORSTOM Series in Biology, 20, 47-49.
83. Firman, I. D. (1974). Cocoa canker. In P. H. Gregory (Ed.), Phytophthora disease of cocoa (pp. 131-140). London: Longman.
84. Firman, I. D., & Sundaram, S. (1970). Reaction of cocoa cultivars to caker caused by P. palmivora in Fiji. Plant Disease Reporter, 64, 1035-1037.
85. Firman, I. D., & Vernon, A. J. (1970). Cocoa canker caused by P. palmivora. Annals of Applied Biology, 65, 65-73.
86. Förster, H., Oudemans, P., & Coffey, M. D. (1990). Mitochondrial and nuclear DNA diversity within six species of Phytophthora. Experimental Mycology, 14, 18-31.
87. Fry, W. E. (1982). Principles of disease management. New York: Academic. 378 pp.
88. Gallegly, M. E., & Galindo, A. J. (1958). Mating types and oospores of Phytophthora infestans in nature in Mexico. Phytopathology, 48, 274-277.
89. Gobena, D., Galmarini, J. R. C., Hulvey, J., & Lamour, K. (2012). Genetic diversity of Phytophthora capsici isolates from pepper and pumpkin in Argentina. Mycologia, 104(1), 102-107. doi:10.3852/11-147.
90. Goodwin, S. B. (1997). The population genetics of Phytophthora. Phytopathology, 87, 462-473.
91. Goodwin, P. H., Kirkpatrick, B. C., & Duniway, J. M. (1990). Identification of Phytophthora citrophthora with cloned DNA probes. Applied and Environmental Microbiology, 56, 669-674.
92. Gorenz, A. M. (1968). Spread of Phytophthora pod rot from the tree base to pods in the canopy. Half Year Progress Report Cocoa Research Institute of Nigeria, 8, 15-16.
93. Gorenz, A. M. (1971). The cotton-pad placement method of inoculating cocoa pods in the field or laboratory. Première reunion du S/Groupe de Travail Afrique sur P. palmivora, Yaoundé, 1971.
94. Gregory, P. H. (1969). Black pod disease project report. London: Cocoa, Chocolate and Confectionery Alliance.
95. Gregory, P. H. (1974). Phytophthora disease of cocoa. London: Longman. 336 pp.
96. Gregory, P. H. (1981). Speculations on Phytophthora as a cocoa root pathogen. In: Proceedings of the 7th International Cocoa Research Conference, Douala, Cameroon, 5-12 November 1979, pp. 267-269.
97. Griffin, M. J. (1977). Cocoa Phytophthora Workshop. Rothamsted Experimental Station, England, 24-26 May 1976. PANS 23: 107-110
98. Griffin, M. J., Idowu, O. L., Maddison, A. C., Taylor, B., & Ward, M. R. (1981). Source of infection. In P. H. Gregory & A. C. Maddison (Eds.), Epidemiology of Phytophthora on cocoa in Nigeria, Phytopathology paper No. 25 (pp. 75-95). Kew, Surrey: Commonwealth Mycological Institute.
99. Griffith, J., Davis, A. J., & Grant, B. R. (1992). Target sites of fungicides to control Oomycetes. In W. Koller (Ed.), Target sites of fungicide action (pp. 69-100). London: CRC Press.
100. Guest, D. (2007). Black pod: diverse pathogens with a global impact on cocoa yield. Phytopathology, 97, 1650-1653.
101. Guest, D. I., Anderson, R. D., Foard, H. J., Phillips, D., Worboys, S., & Middleton, R. M. (1994). Longterm control of Phytophthora palmivora diseases of cocoa using trunk-injected phosphonate. Plant Pathology, 43, 479-492.
102. Guest, D. I., & Grant, B. R. (1991). The complex action of phosphonates as antifungal agents. Biological Reviews, 66, 159-187.
103. Gunderson, J. H., Elwood, H., Ingold, A., Kindle, K., & Sogin, M. L. (1987). Phylogenetic relationships between chlorophytes, chrysophytes, and oomycetes. Proceedings of the National Academy of Sciences, 84(16), 5823-5827.
104. Hansen, A. (1961). Resistance and susceptibility of different cacao varieties to P palmivora. Cacao (Costa Rica), 6, 8.
105. Hemmes, D. E. (1983). Cytology of Phytophthora. In D. C. Erwin, S. Bartnicki-Garcia, & P. H. Tsao (Eds.), Phytophthora: Its biology, taxonomy, ecology and pathology (pp. 9-40). St. Paul, MN: American Phytopathological Society. 392 pp.
106. Hendrix, J. W. (1970). Sterols in growth and reproduction of fungi. Annual Review of Phytopathology, 8, 111-130.
107. Henry, C. E. (1977). Primary sources of P. palmivora (Butl.) Butl. inoculum in Jamaica and methods of control. In: Proceedings of the 5th International Cocoa Research Conference, Ibadan, Nigeria, 1-9 September 1975, pp. 388-396.
108. Hislop, E. C. (1964). Black pod disease. Cocoa Growers’ Bulletin, 2, 4-9.
109. Ho, H. H., Ann, P. J., & Chang, H. S. (1995). The genus Phytophthora in Taiwan. Institute of Botany, Academia Sinica Monograph Series No. 15, Teipei.
110. Holderness, M. (1992). Comparison of metalaxyl/cuprous oxide sprays and potassium phosphonate as sprays and trunk injections for control of Phytophthora palmivora pod rot and caker of cocoa. Crop Protection, 11, 141-147.
111. Holliday, P. (1954). Notes on the control of black pod and witches’ broom diseases in Trinidad. In: Proceedings of the Conference InterAmerican de Cacao, Turrialba, Costa Rica, 1954, Fitopatologia Vol 1, Doc. 15, 5.
112. Holliday, P. (1960). A spraying and harvesting trial in Trinidad against cacao pod disease. Tropical Agriculture (Trinidad), 37, 235-242.
113. Hu, J., Diao, Y., Zhou, Y., Lin, D., Bi, Y., et al. (2013). Loss of heterozygosity drives clonal diversity of Phytophthora capsici in China. PLoS One, 8(12), e82691. doi:10.1371/journal. pone.0082691.
114. Hulvey, J. P. (2010) Investigating genetic diversity of Phytophthora spp. and related oomycetes. Ph.D. Thesis, University of Tennessee. http://trace.tennessee.edu/utk_graddiss/807
115. Hurtado-Gonzales, O. P., Aragon-Caballero, L., Apaza-Tapia, W., Donahoo, R., & Lamour, K. (2008). Survival and spread of Phytophthora capsici in coastal Peru. Phytopathology, 98(6), 688-694.
116. ICCO. (2015) Production of cocoa beans. ICCO Quarterly Bulletin of Cocoa Statistics 41(2), Cocoa year 2014/15. Published 29-05-2015. http://www.icco.org/statistics/
117. Ivors, K. L., Hayden, K. J., Bonants, P. J. M., Rizzo, D. M., & Garbelotto, M. (2004). AFLP and phylogenetic analyses of North American and European populations of Phytophthora ramorum. Mycological Research, 108, 378-392.
118. Iwaro, A. D. (1995). Mechanisms of resistance to Phytophthora palmivora (Butler) Butler in cacao (Theobroma cacao L.) and their genetic basis. Ph.D. Thesis, Department of Plant Science, The University of the West Indies, St. Augustine, Trinidad.
119. Iwaro, A. D., Butler, D. R., & Eskes, A. B. (2006). Sources of resistance to Phytophthora pod rot at the International Cocoa Genebank, Trinidad. Genetic Resources and Crop Evolution, 53, 99-109. doi:10.1007/s10722-004-1411-1.
120. Iwaro, A. D., Sreenivasan, T. N., & Umaharan, P. (1997). Foliar resistance to Phytophthora palmivora as an indicator of pod resistance in Theobroma cacao. Plant Disease, 81, 619-624.
121. Iwaro, A. D., Sreenivasan, T. N., & Umaharan, P. (1998). Cacao resistance to Phytophthora: Effect of pathogens species, inoculation depths and pod maturity. European Journal of Plant Pathology, 104, 11-15.
122. Johnson, E. S., Aime, M. C., Crozier, J., Flood, J., Iwaro, D. A., & Schnell, R. J. (2006). A new morpho-type of Phytophthora palmivora on cacao in Central America. In: Proceedings of the INCOPED 5th International Seminar, 15-17th Oct 2006, San Jose, Costa Rica, pp. 31-39.
123. Joseph, J. (1985). Relationship between infection of cocoa (Theobroma cacao L.) pod and vegetative tissue by Phytophthora palmivora (Butl.) Butler, Final Year Project, Department of Plant Science, The University of the West Indies, St. Augustine, Trinidad.
124. Kamjaipai, W., & Ui, T. (1978). Mating types of Phytophthora capsici Leonian, the causal fungus of pumpkin rot in Hokkaido. Annals of the Phytopathological Society of Japan, 44, 440-446.
125. Kamoun, S. (2003). Molecular genetics of pathogenic oomycetes. Eukaryotic Cell, 2(2), 191-199. doi:10.1128/EC.2.2.191-199.2003.
126. Kamoun, S., Hraber, P., Sobral, B., Nuss, D., & Govers, F. (1999). Initial assessment of gene diversity for the oomycete pathogen Phytophthora infestans based on expressed sequences. Fungal Genetics and Biology, 28, 94-106.
127. Kaosiri, T. (1978) Morphological, Taxonomic and Cytological studies of Phytophthora palmivora. Ph.D. Thesis, University of California, Riverside, United States, 148 p.
128. Kaosiri, T., Zentmyer, G. A., & Erwin, D. C. (1978). Stalk length as a taxonomic criterion for Phytophthora palmivora isolates from cacao. Canadian Journal of Botany, 56, 1730-1738.
129. Kellam, M. K., & Zentmyer, G. A. (1986). Morphological, physiological, ecological and pathological comparisons of Phytophthora species isolated from Theobroma cacao. Phytopathology, 76, 159-164.
130. Ko, W.-H., & Chang, H. S. (1979). Phytophthora katsurae, a new name for P. castaneae. Mycologia, 71, 840-844.
131. Ko, W.-H., Wang, S. Y., & Ann, P. J. (2006). The possible origin and relation of Phytophthora katsurae and P. heveae, discovered in a protected natural forest in Taiwan. Botanical Studies, 47, 273-277.
132. Konam, J. K., & Guest, D. I. (2004). Role of beetles (Coleoptera: Scolytidae and Nitidulidae) in the spread of Phytophthora palmivora pod rot of cocoa in Papua New Guinea. Australasian Plant Pathology, 33, 55-59.
133. Kroon, L. P. N. M., Bakker, F. T., van den Bosch, G. B. M., Bonants, P. J. M., & Flier, W. G. (2004). Phylogenetic analysis of Phytophthora species based on mitochondrial and nuclear DNA sequences. Fungal Genetics and Biology, 41(8), 766-782. doi:10.1016/j.fgb.2004.03.007.
134. Kroon, L. P. N. M., Brouwer, H., de Cock, A. W. A. M., & Govers, F. (2012). The genus Phytophthora anno 2012. Phytopathology, 102, 348-364.
135. Laker, H. A. (1982). Cocoa and its diseases: A literature review. Cocoa Research Unit, The University of the West Indies, St. Augustine, Trinidad and Tobago.
136. Lamour, K. H., & Hausbeck, M. K. (2001). Investigating the spatiotemporal genetic structure of Phytophthora capsici in Michigan. Phytopathology, 91, 973-980.
137. Lass, R. A. (2001). Diseases. In G. A. R. Wood & R. A. Lass (Eds.), Cocoa (4th ed., pp. 265-365). Oxford: Blackwell. doi:10.1002/9780470698983.
138. Lawrence, J. S. (1978). Evaluation of methods for assessing resistance of cacao (Theobroma cacao L.) cultivars and hybrids to Phytophthora palmivora (Butler) Butler. Itabuna, Bahia, Brasil. Centro de Pesquisas do Cacau. Boletim Técnico no. 62, 47 pp.
139. Lawrence, J. S., Campelo, A. M. F. L., & de Figueiredo, J. M. (1990). Diseases of cacao. I-Fungal diseases which occur on the fruit (in Portuguese). Agrotropica, 2, 121-136.
140. Lawrence, J. S., Luz, E. D. M. N., & Resnik, F. C. Z. (1982). The relative virulence of Phytophthora palmivora and P. capsici on cacao in Bahia, Brazil. In: Proceedings of the 8th International Cocoa Research Conference, 1981, Cartagena, Colombia. Lagos, Nigeria: Cocoa Producers’ Alliance, pp. 395-400.
141. Lee, J. K., Jo, J. W., Shin, K. C., Lee, S. H., & Lee, S. Y. (2009). Isolation, identification and characterization of Phytophthora katsurae causing chestnut ink disease in Korea. The Plant Pathology Journal, 25(2), 121-127.
142. Lellis, W. T., & Peixoto Filho, O. (1960). Communicacao preliminar sobre a resistencia do cacao ‘Catongo’ a P. palmivora (Butl.) Butl. Institute Cacau de Bahia Boletin Informative, 61, 26-31.
143. Leonian, L. H. (1922). Stem and fruit blight of peppers caused by Phytophthora capsici sp. nov. Phytopathology, 12, 401-408.
144. Leonian, L. H. (1925). Physiological studies on the genus Phytophthora. American Journal of Botany, 12, 444-498.
145. Leonian, L. H. (1934). Identification of Phytophthora species. West Virginia Agriculture Experiment Station Bulletin, 262, 2-36.
146. Lewton-Brain, L. (1906). Fungoid diseases of cacao. West Indian Bulletin, 6(1), 85-94.
147. Liyanage, N. I. S., & Wheeler, B. E. J. (1989). Phytophthora katsurae from cocoa. Plant Pathology, 38, 627-629.
148. Lozano, T. Z. E., & Romero, C. S. (1984). Estudio taxanomico de aislamientos de Phytophthora patogenos de cacao. Agrociencia, 56, 176-182.
149. MacKenzie, D. R., Elliott, V. J., Kidney, B. A., King, E. D., Royer, M. H., & Theberge, R. L. (1983). Application of modern approaches to the study of the epidemiology of diseases caused by Phytophthora. In D. C. Erwin, S. Bartnicki-Garcia, & P. H. Tsoa (Eds.), Phytophthora. Its biology, taxonomy, ecology and pathology (pp. 303-313). St. Paul, MN: American Phytopathological Society.
150. Maddison, A. C., Griffin, M. J. (1981). Detection and movement of inoculum. In: Epidemiology of Phytophthora on cocoa in Nigeria. Phytopathology paper No. 25. Kew: Commonwealth Mycological Institute, pp. 31-49.
151. Maddison, A. C., Ward, M. R. (1981). The international black pod project: 1979 review. In: Proceedings of the 7th International Cocoa Research Conference, Douala, Cameroon, 5-- 12 November, 1979, pp. 261-266.
152. Manco, G. R. (1966). Phytophthora palmivora in flower cushions, old infected pods and leaves of cacao plants. Turrialba, 16, 148-155.
153. Manco, G. R. (1974). Blight of shoots, chupons, cuttings, grafts, and seedlings. In P. H. Gregory (Ed.), Phytophthora disease of cocoa (pp. 149-152). London: Longman.
154. Maora, J. Y. S. (2008). Diversity of Phytophthora palmivora on cocoa in Papua New Guinea. Ph.D. Thesis, Faculty of Agriculture, Food and Natural Resources, The University of Sydney, Australia.
155. Marticou, H., & Muller, R. A. (1964). Essai de mise au point d’une method d’experimentation adaptée aux conditions de la cacaoyere camerounaise traditionnelle. Café Cacao Thé, 8, 173-202.
156. Martin, F. N., Abad, Z. G., Balci, Y., & Ivors, K. (2012). Identification and detection of Phytophthora: Reviewing our progress, identifying our needs. Plant Disease, 96(8), 1080-1102.
157. Martin, F. N., Blair, J. E., & Coffey, M. D. (2014). A combined mitochondrial and nuclear multilocus phylogeny of the genus Phytophthora. Fungal Genetics and Biology, 66, 19-32. doi:10.1016/j.fgb.2014.02.006.
158. Martin, F. N., & Tooley, F. W. (2003). Phylogenetic relationships among Phytophthora species inferred from sequence analysis of mitochondrially encoded cytochrome oxidase I and II genes. Mycologia, 95(2), 269-284.
159. Massee, G. (1899). Cacao diseases in Trinidad. Kew Bulletin, 1, 1-6.
160. Mata, A. (2014). A study of the molecular and morphological diversity of the pathogen Phytophthora palmivora on cacao in Trinidad and Tobago. BIOL 3069 Research Project Report, The University of the West Indies, St. Augustine, 45 p.
161. Maublanc, C. (1909). Les maladies des plantes cultivees dans les pays chauds. Maladies du cacaoyer. Agriculture Pratique Des Pays Chauds, 9, 314-318.
162. McDonald, K. L., Sutherland, M. W., & Guest, D. I. (2002). Temporary hypoxia suppresses the oxidative burst and hypersensitive cell death in cells of tobacco and soybean challenged with zoospores of incompatible isolates of Phytophthora species. Physiological and Molecular Plant Pathology, 61, 133-140.
163. McGregor, A. J. (1982). Evaluation of fungicides for control of black pod in Papua New Guinea. In: Proceedings of the International Conference on Plant Protection in the Tropics, Kuala Lumpur, Malaysia. Malaysian Crop Protection Society, pp. 233-239.
164. Mchau, G. R. A., & Coffey, M. D. (1994a). An integrated study of morphological and isozyme patterns found within a worldwide collection of Phytophthora citrophthora and a redescription of the species. Mycological Research, 98(11), 1291-1299.
165. Mchau, G. R. A., & Coffey, M. D. (1994b). Isozyme diversity in Phytophthora palmivora: Evidence for a southeast Asian centre of origin. Mycological Research, 98(9), 1035-1043. doi:10.1016/S0953-7562(09)80430-9.
166. Mchau, G. R. A., & Coffey, M. D. (1995). Evidence for the existence of two subpopulations in Phytophthora capsici and a redescription of the species. Mycological Research, 99, 89-102.
167. McLaughlin, J. H. (1950). Some symptoms of Phytophthora palmivora Butl. infection on Theobroma cacao L. in Costa Rica. Cacao (Costa Rica), 2, 3-5.
168. Medeiros, A. G. (1967). Methodology of research to study resistance of P. palmivora (Butl.) Butl. In: Proceedings of the International Cocoa Research Conference, Abidjan, Côte d’Ivoire, 15-20 November 1965, pp. 205-211.
169. Medeiros, A. G., Machado, A. D. (1967). Variaco da Resistencia do trecido de fruto de cacu e podrido parda. Information Technology CEPLAC, CEPEC, Itabuna, Brazil, 1967, pp. 47-48.
170. Medeiros, A. G., & Rocha, H. M. (1964). Programacao dos trabalhos de selecao de cacqueiros resistantes a ‘podrido parda’ no Estado da Bahia-Brazil. 4th Annual Meeting Caribbean Division American Phytopathology Society Mexico City, 1964. (Abstract) Phytopathology 55: 125-126.
171. Medeiros, A. G., Rocha, H. M. (1965). Ensao de Resistencia do cacao ‘Maracuja’ a podridao parda. CEPEC Relatório Annual. Bahia 1964, p. 30.
172. Mollineau, W. M., Bekele, F., & Garcia, G. W. (2008). The Neo-tropical red squirrel (Sciurus granatensis) as a pest of cacao (Theobroma cacao L.) in the International Cacao Genebank, Trinidad; Trinidad. Tropical Agriculture (Trinidad), 85(2), 1-12.
173. Muller, H. R. A. (1936). Het Phytophthora-voetrot van peper (Pipernigrum L.) in Nederlandsch- Indie. Meded Inst. Plantenziekten Batavia, 8(8), 1-73.
174. Muller, R. A., & Lotode, R. (1971) Problemes de l’experimentation dans les cacaoyeres. Preimere Rénuion du S/Groupe de Travail Afrique sur P. palmivora, Yaoundé, 1971.
175. Newhall, A. G. (1968). To increase efficiency or lower the cost of control of Phytophthora pod rot of cacao. Turrialba, 18, 79-82.
176. Newhook, F. J., Waterhouse, G. M., & Stamps, D. J. (1978). Tabular key to the species of Phytophthora de Bary. Mycological Papers, no. 143. Commonwealth Mycological Institute, Kew, England.
177. Nowell, W. (1923). Diseases of crop-plants in the Lesser Antilles. London: The West India Committee.
178. Nyadanu, D., Akromah, R., Adomako, B., Kwoseh, C., Lowor, S. T., Dzahini-Obiatey, H., Akrofi, A. Y., & Assuah, M. K. (2012). Inheritance and general combining ability studies of detached pod, leaf disc and natural field resistance to Phytophthora palmivora and Phytophthora megakarya in cacao (Theobroma cacao L.). Euphytica, 188(2), 253-264. doi:10.1007/s10681-012- 0717-x.
179. Nyadanu, D., Assuah, M. K., Adomako, B., Opoku, A. Y., Opoku, I. Y., & Adu-Ampomah, Y. (2009). Efficacy of screening methods used in breeding for black pod disease resistance varieties in cocoa. African Crop Science Journal, 17(4), 175-186.
180. Nyassé, S., Bidzanga Nomo, L., Blaha, G., Flament, M., Berry, D. & Cilas, C. (1996). Update on the work on selection of cocoa for resistance to Phytophthora spp. in Cameroon. Proceedings. In International Workshop on the Contribution of Disease Resistance to Cocoa Variety Improvement. Salvador, BA (Brasil). 24-26 Nov 1996.
181. Nyassé, S., Cilas, C., Hérail, C., & Blaha, G. (1995). Leaf inoculation as an early screening test for cocoa (Theobroma cacao L.) resistance to Phytophthora black pod disease. Crop Protection, 14(8), 657-663.
182. Oh, E., & Parke, J. L. (2012) Phytophthora katsurae. Forest Phytophthoras 2(1). doi:10.5399/osu/fp.2.1.3046. http://journals.oregondigital.org/ForestPhytophthora/article/view/katsurae/2731
183. Okaisabor, E. K. (1969). The survival of P. palmivora (Butl.) Butl. through the dry season. Nigerian Agricultural Journal, 6, 85-89.
184. Okaisabor, E. K. (1971). The mechanism of initiation of Phytophthora pod rot epiphytotics. In: Proceedings of the 3rd International Cocoa Research Conference, Accra, Ghana, 23-- 29 November, 1969, pp. 398-404.
185. Okey, E. N. (1996) Histopathological and biochemical studies on cocoa (Theobroma cacao L.) canker caused by Phytophthora palmivora (Butl.) Butler. Ph.D. Thesis, Department Plant Science, The University of the West Indies, St. Augustine, Trinidad.
186. Okey, E. N., Duncan, E. J., Sirju-Charran, G., & Sreenivasan, T. N. (1994). Histopathological studies of Phytophthora infection on cocoa stem in Trinidad. In: Proceedings of the 11th International Cocoa Research Conference, Côte d’Ivoire, 18-24 July 1993, pp. 61-65.
187. Onesirosan, P. T. (1971). The survival of Phytophthora palmivora in a cocoa plantation during the dry season. Phytopathology, 61, 975-977.
188. Opeke, L. K., & Gorenz, A. M. (1974). Phytophthora pod rot: Symptoms and economic importance. In P. H. Gregory (Ed.), Phytophthora diseases of cocoa (pp. 117-124). London: Longman Group (Far East) Limited.
189. Orellana, R. G. (1953). Infection and tissue change of Theobroma cacao L. by P. palmivora (Butl.) Butl. Turrialba, 4, 167-172.
190. Orellana, R. G. (1954) Growth of Phytophthora palmivora of cacao in liquid media containing cacao shell from different clones as a basis for assessment of resistance. In: Proceedings of Conference on Interamericano del Cacao, Turrialba, Costa Rica, 1954, Fitopathologia, vol 1, Doc. 29, 3.
191. Orellana, R. G. (1959). Variation in Phytophthora palmivora isolates from cacao and rubber. Phytopathology, 49, 210-213.
192. Oudemans, P., & Coffey, M. D. (1991a). Isozyme comparison within and among worldwide sources of three morphologically distinct species of Phytophthora. Mycological Research, 95(1), 19-30.
193. Oudemans, P., & Coffey, M. D. (1991b). A revised systematics of twelve papillate Phytophthora species based on isozyme analysis. Mycological Research, 95(9), 1025-1046.
194. Oudemans, P., & Coffey, M. D. (1991c). Relationships between Phytophthora species: Evidence from isozyme analysis. In J. A. Lucas, R. C. Shattock, D. S. Shaw, & L. R. Cooke (Eds.), Phytophthora (pp. 184-203). Cambridge: Cambridge University Press.
195. Oudemans, P., Forster, H., & Coffey, M. D. (1994). Evidence for distinct isozyme subgroups within Phytophthora citricola and close relationships with P. capsici and P. citrophthora. Mycological Research, 98, 189-199.
196. Owen, H. (1951). Cocoa pod diseases in West Africa. Annals of Applied Biology, 38, 715-718.
197. Partiot, M. (1975). Horizontal resistance in cacao to Phytophthora sp. Methods of early evaluation. Café Cacao Thé, 19, 123-136.
198. Pennycook, S. R. (2012). Phytophthora castaneae, the correct name for P. katsurae nom. nov. superfl. Mycotaxon, 121, 327-331. http://dx.doi.org/10.5248/121.327.
199. Percival, M. (2015) Cocoa-nomics: Why cocoa doesn’t really grow on trees. The CNN Freedom Project-Ending Modern Day Slavery. http://edition.cnn.com/2014/02/13/world/africa/cocoanomics- does-chocolate-grow-on-trees/. Updated 1103 GMT (1803 HKT) April 3, 2015. Accessed online: 23rd April, 2015.
200. Pereira, J. L. (1985). Chemical control of pod rot in Brazil. Cocoa Growers’ Bulletin, 36, 23-38.
201. Peter, P. K., & Chandramohan, R. (2014). Integrated management of black pod disease of cocoa caused by Phytophthora palmivora. International Journal of Plant Protection, 7(1), 107-110.
202. Pinto, L. R. M., Silva, S. D. V. M., & Yamada, M. M. (2007). Evaluation of phenotypic stability of resistance to Phytophthora spp. in cacao clones. Fitopatologia Brasileira, 32, 453-457.
203. Prendergast, W. N. E. (1965). Studies in the resistance of Theobroma cacao L. to P. palmivora (Butl.) Butl. M.Sc. Thesis, Department of Plant Science, The University of the West Indies, St. Augustine, Trinidad and Tobago.
204. Prendergast, W. N. E., Spence, J. A. (1967). A contribution to the study of the resistance of Theobroma cacao L. to Phytophthora palmivora (Butl.) Butl. In: Proceedings of the International Cocoa Conference, Abidjan, Côte d’Ivoire, 15-20 November, 1965, pp. 212-216.
205. Prior, C. (1981) Phytophthora bark canker of cocoa in Papua New Guinea. In: Proceedings of the 7th International Cocoa Research Conference, Douala, Cameroon, 5-12 November, 1979, pp. 272-275.
206. Prior, C., & Sitapi, E. (1980). Resistance of clonal cocoa in Papua New Guinea to bark canker caused by Phytophthora palmivora (Butl.) Butl. Tropical Agriculture (Trinidad), 57(2), 167-169.
207. Prior, C., & Smith, E. S. C. (1982). Control of bark canker in cocoa with metalaxyl. Tropical Pest Management, 28, 45-48.
208. Quesada-Ocampo, L. M., Granke, L. L., Mercier, M. R., Olsen, J., & Hausbeck, M. K. (2011). Investigating the genetic structure of Phytophthora capsici populations. Phytopathology, 101, 1061-1073.
209. Reinking, O. A. (1923). Comparative study of Phytophthora faberi on coconut and cacao in the Philippine islands. Journal of Agricultural Research, 25(6), 267-284.
210. Ribeiro, O. (2013). A historical perspective of Phytophthora. In K. Lamour (Ed.), Phytophthora: A global perspective. Wallingford: CAB International.
211. Ristaino, J. B. (1990). Intraspecific variation among isolates of Phytophthora capsici from pepper and cucurbit fields in North Carolina. Phytopathology, 80, 1253-1259.
212. Ristaino, J. B. (2002). Tracking historic migrations of the Irish potato famine pathogen, Phytophthora infestans. Microbes and Infection, 4(13), 1369-1377.
213. Robertson, F. A. (1986). Studies on infection and rate of development of Phytophthora palmivora (Butler) Butler on cocoa (Theobroma cacao L.) stem. Final Year Project Report, Department of Crop Science, The University of the West Indies, St. Augustine, Trinidad.
214. Rocha, H. M., & Machado, A. D. (1972). Control of cacao black pod disease. Revista Theobroma (Brazil), 2(2), 15-26.
215. Rocha, H. M., Mariano, A. H. (1969). Selécao de cultivares de cacao resistentes a P. palmivora (Butl.) Butl. In: Proceedings of the 2nd International Cocoa Research Conference, Salvador e Itabuna, Bahia, Brazil, 19-26 November 1967, pp. 166-169.
216. Rocha, H. M., & Medeiros, A. G. (1969). Bases para a selecao de cultivares de cacao resistentes a P. palmivora. In: Proceedings of the 2nd International Cocoa Research Conference, Salvador e Itabuna, Bahia, Brazil, 19-26 November, 1967, pp. 150-155.
217. Rocha, H. M., Vello, F. (1971). Estudos sobre Resistencia do cacao (Theobroma cacao L.) a P. palmivora (Butl.) Butl. In: Proceedings of the 3rd International Cocoa Research Conference, Accra, Ghana, 23-29 November 1969, pp. 430-438.
218. Rorer, J. B. (1910). Pod rot, canker and chupon wilt of cacao caused by Phytophthora sp. Bulletin of the Department of Agriculture of Trinidad and Tobago, 9, 79-121.
219. Rosenbaum, J. (1917). Studies of the Genus Phytophthora. Proceedings of the National Academy of Sciences of the United States of America, 3, 159-163.
220. Russell, T. A. (1953). The spacing of Nigerian cacao. Empire Journal of Experimental Agriculture, 21, 145-153.
221. Sansome, E., Brasier, C. M., & Griffin, M. J. (1975). Chromosome size difference in Phytophthora palmivora, a pathogen of cocoa. Nature (London), 255, 704-722.
222. Sarejanni, J. A. (1936). La pourriture du Collet des Solanées cultivees et la classification du genre Phytophthora (A collar rot of cultivated Solanum and the classification of the genus Phytophthora). Annals of Phytopathology Benaki, Greece, 2, 35-52 (In French).
223. Savage, E. J., Clayton, C. W., Hunter, J. H., Brenneman, J. A., Laviola, C., & Gallegly, M. E. (1968). Homothallism, heterothallism, and interspecific hybridization in the genus Phytophthora. Phytopathology, 58, 1004-1021.
224. Schena, L., & Cooke, D. E. L. (2006). Assessing the potential of regions of the nuclear and mitochondrial genome to develop a “molecular tool box” for the detection and characterization of Phytophthora species. Journal Microbiological Methods, 67, 70-85.
225. Schumann, G. L., & D’Arcy, C. J. (2012). Hungry planet stories of plant diseases. St. Paul, MN: The American Phytopathological Society.
226. Siller, F. L., & McLaughlin, J. (1950). A method of evaluating fungicides for the control of Phytophthora palmivora Butl. on Theobroma cacao L. Cacao, 2(10), 1-3.
227. Sitapai, E. C. (1989). Studies on resistance in cacao (Theobroma cacao L.) to Phytophthora palmivora (Butler) Butler. M.Phil. Thesis, The University of the West Indies, St. Augustine, Trinidad.
228. Slusher, R. L., Haas, D. L., Carothers, Z. B., & Sinclair, J. B. (1974). Ultrastructure at the hostparasite interface of Phytophthora megasperma var. sojae in soybean rootlets. Phytopathology, 64, 834-840.
229. Slusher, R. L., & Sinclair, J. B. (1973). Development of Phytophthora megasperma var. sojae in soybean roots. Phytopathology, 63, 1168-1171.
230. Smith, J. J., & Flood, J. (2001). Epidemiology and population structure of Phytophthora species causing disease of coconut in Indonesia. Final Technical Report [DFID RNRKS CPP R6766].
231. Smith, R. E., & Smith, E. H. (1906). A new fungus of economic importance. Botanical Gautte, 42, 215-221.
232. Spence, J. A. (1959). The problem of P. palmivora on the cocoa plant. Journal of Agricultural Science (Trinidad), 59, 97-111.
233. Sreenivasan, T. N. (1975). A new Phytophthora. Annual Report, Cocoa Research Unit. St. Augustine, Trinidad. p. 20.
234. Sreenivasan, T. N. (1977). A new method for screening for resistance to P. palmivora (Butl.) Butl. In: Proceedings of the 5th International Cocoa Research Conference, Ibadan, Nigeria, 1-9 September 1975, pp. 435-438.
235. Sreenivasan, T. N. (1981). A new approach for the control of black pod disease of cocoa. CRU paper, Cocoa Research Unit, The University of the West Indies, St. Augustine, Trinidad.
236. Sreenivasan, T. N. (1985). A rapid method of inoculation of P. palmivora (Butl.) Butl. on attached pods. In: Proceeding of the 9th International Cocoa Research Conference, Lomé, Togo, 12-18 February 1984, pp. 385-388.
237. Sreenivasan, T. N., Petit, T. R., & Rudgard, S. A. (1990). An alternative method of applying copper to control cocoa disease. Brighton Crop Protection Conference Pests and Diseases, pp. 583-588.
238. Sreenivasan, T. N., & Quesnel, V. C. (1977). Field differentiation of black pod from other cocoa pod diseases. Tropical Agriculture (Trinidad), 54, 371-372.
239. Stack, J. P., & Miller, R. L. (1985). Relative survival potential of propagules of Phytophthora megasperma f.sp. medicaginis. Phytopathology, 75, 1398-1404.
240. Stamps, D. J., Waterhouse, G. M., Newhook, F. J., & Hall, G. S. (1990). Revised tabular key to the species of Phytophthora. Mycological Papers, no. 162. International Mycological Institute, Kew, England.
241. Steer, J., & Coates-Beckford, P. L. (1991). Papel de la Phytophthora katsurae, P. palmivora, Thielaviopsis paradoxa y Enterobacter sp. En la pudrición de cogollo de los cocoteros en Jamaica [sic]. Revista Palmas, 12(4), 35-45.
242. Surujdeo-Maharaj, S., Umaharan, P., & Iwaro, A. D. (2001). A study of genotype-isolate interaction in cacao (Theobroma cacao L.): Resistance of cacao genotypes to isolates of Phytophthora palmivora. Euphytica, 118, 295-303.
243. Tahi, M., Kebe, I., Eskes, A. B., Ouattara, S., Sangare, A., & Mondeil, F. (2000). Rapid screening of cacao genotypes for field resistance to Phytophthora palmivora using leaves, twigs and roots. European Journal of Plant Pathology, 106, 87-94.
244. Tanaka, T. (1920). New Japanese fungi: Notes and translations: VIII. Mycologia, 12(1), 25-32.
245. Tarjot, M. (1965). Etude de la resistence des cacaoyers a la pourriture brune des cabosses due au P. palmivora (Butl.) Butl. en Côte d’Ivoire: Iere partie: Inoculations experimentales par blessure et par fragment de culture. Café Cacao Thé, 9, 126-133.
246. Tarjot, M. (1967). Etude de la resistence des cacaoyers a la pourriture des cabosses due au P. palmivora (Butl.) Butl. en Côte d’Ivoire, Deuxieme partie: inoculations experimentales au laboratoire par depot d’une goutte de suspension de zoospores sur la cabosse sans blessure. Café Cacao Thé, 11, 3-13.
247. Tarjot, M. (1969). Etude de la resistence des cacaoyers a la pourriture des cabosses due au P. palmivora (Butl.) Butl. en Côte d’Ivoire: Troisieme partie: inoculations experimentales sur le terrain. Café Cacao Thé, 13, 297-309.
248. Thévenin, J., Umaharan, R., & Butler, D. (2006). Review of resistance screening of cocoa seedlings and clones to witches’ broom disease: Methods, problems and correlation with field results. The experience of the Cocoa Research Unit, Trinidad. In: Eskes, A. B., & Efron, Y. (Eds.), Global Approaches to Cocoa Germplasm Utilization and Conservation Final report of the CFC/ICCO/IPGRI project on “Cocoa Germplasm Utilization and Conservation: a Global Approach” (1998-2004). CFC, Amsterdam, The Netherlands/ICCO, London, UK/IPGRI, Rome, Italy. CFC Technical Paper 50: 137-145.
249. Thines, M. (2014). Phylogeny and evolution of plant pathogenic oomycetes-a global overview. European Journal of Plant Pathology, 138(3), 431-447.
250. Thomas, K. M., Ramakrishnan, T. S., Soumini, C. K., & Balakrishnan, M. S. (1948). Studies in the genus Phytophthora. I. Oospore formation and taxonomy of Phytophthora palmivora. Butl. Proceedings of the Indian Academy of Sciences Series B, 26, 147-163.
251. Thorold, C. A. (1952). Airborne dispersal of Phytophthora palmivora causing black pod disease of Theobroma cacao L. Nature, 170, 718-719.
252. Thorold, C. A. (1953) The control of black pod disease of cocoa in the Western Region of Nigeria. In: Proceedings of the Cacao Conference London 1953. London: Cocoa, Chocolate and Confectionery Alliance, pp. 108-115.
253. Thorold, C. A. (1955). Observations on black pod disease (P. palmivora) of cacao in Nigeria. Transactions of the British Mycological Society, 38, 435-452.
254. Thorold, C. A. (1959). Methods of controlling black pod disease caused by P. palmivora of Theobroma cacao in Nigeria. Annals of Applied Biology, 47, 708-715.
255. Thorold, C. A. (1975). Diseases of Cocoa. Oxford: Clarendon.
256. Tokunaga, J., & Bartnicki-Garcia, S. (1971). Structure and differentiation of the cell wall of Phytophthora palmivora: cysts, hyphae and sporangia. Archives of Microbiology, 79(4), 293-310.
257. Tondje, P. R., Berry, D., Bakala, J., & Ebandan, S. (1994). Value of various cultivation practices in controlling black pod in cacao caused by Phytophthora spp. in Cameroon. In: Proceedings of the 11th International Cocoa Research Conference, Côte d’Ivoire, 18-24 July 1993, pp. 175-183.
258. Toxopeus, H., & Gorenz, A. M. (1969). Phytophthora pod rot: a routine screening technique for resistance. Report of the Cocoa Research Institute of Nigeria 1968-69, pp. 109-110.
259. Troung, N. V., Liew, E. C. Y., & Burgess, L. W. (2010). Characterisation of Phytophthora capsici isolates from black pepper in Vietnam. Fungal Biology, 114, 160-170.
260. Tucker, C. M. (1931). Taxonomy of the genus Phytophthora de Bary. University of Missouri Agriculture Experimental Station Bulletin, 153, 1-208.
261. Turner, P. D. (1961). Strains of Phytophthora palmivora Butl. (Butl.) from Theobroma cacao L. II. Isolates from non-African countries. Transactions of the British Mycological Society, 44, 409-416.
262. Turner, P. D. (1962). Black pod disease: Resistance and tolerance, laboratory studies. Report West African Cocoa Research Institute of Ghana 1960-61, pp. 29-32.
263. Turner, P. D. (1963a). Black pod disease: resistance and tolerance, laboratory studies. Report West African Cocoa Research Institute of Ghana 1961-62, pp. 21-25.
264. Turner, P. D. (1963b). Influence of root exudates of cacao and other plants on spore development of P. palmivora. Phytopathology 53: 1337-1339.
265. Turner, P. D., & Asomaning, E. J. A. (1962). Root infection of Theobroma cacao L. by P. palmivora. Tropical Agriculture (Trinidad), 39, 339-343.
266. Turner, P. D., & Asomaning, E. J. A. (1963). Root infection of cocoa by Phytophthora palmivora Butl. Report of the West African Cocoa Research Institute of Ghana 1961-62, pp. 25-27.
267. Umaharan, P. (2014). Leveraging the International Cocoa Gene Bank to Improve Competitiveness of the Cocoa Sector in the Caribbean, Using Modern Genomics. Progress Report, September 2014, The UWI-Trinidad and Tobago Research and Development Impact Fund.
268. Urquhart, D. J. (1961). Cocoa. London: Longman.
269. Van der Molen, G. E. (1971). Zoospore encystment in Phytophthora infestans (Mont.) De Bary, Ph.D. Thesis, Iowa State University, Ames, Iowa.
270. Van der Plank, J. E. (1963). Plant diseases: Epidemics and control. New York: Academic.
271. Venkatarayan, S. V. (1932). Phytophthora arecae parasitic on areca tops and a strain of P. palmivora (Butl.) (P. faberi Maubl.) on a new host, Aleurites fordii. Phytopathology, 22, 217-227.
272. Vernon, A. J. (1966). The incidence of black pod at Tafo in 1965. 2nd Session Technical Working Party on Cacao Production, FAO, Rome.
273. Vernon, A. J. (1971). Canker: the forgotten disease of cocoa. Cocoa Growers’ Bulletin, 16, 9-14.
274. Vernon, A. J. (1977). Yield of cocoa farms with and without fungicide spray to control black pod disease. Fiji Agricultural Journal, 39(2), 111.
275. Villa, N. O., Kageyama, K., Asano, T., & Suga, H. (2006). Phylogenetic relationships of Pythium and Phytophthora species based on ITS rDNA, cytochrome oxidase II and betatubulin sequences. Mycologia, 98, 410-422.
276. Von Faber, F. C. (1907). Bericht über die pflanzenpathologische expedition nach Kamerun. Der Tropen, 11, 735-775.
277. Walker, C. A., & van West, P. (2007). Zoospore development in the oomycetes. Fungal Biology Reviews, 21(1), 10-18.
278. Waterhouse, G. M. (1963). Key to the species of Phytophthora de Bary. Mycological Papers, no. 92. Commonwealth Mycological Institute, Kew, England.
279. Waterhouse, G. M. (1970). The genus Phytophthora de Bary. Mycological Papers, 122, 1-59.
280. Waterhouse, G. M. (1974a). Other Phytophthora species recorded on cacao. In P. H. Gregory (Ed.), Phytophthora disease of cocoa (pp. 71-79). London: Longman.
281. Waterhouse, G. M. (1974b). Phytophthora palmivora and some related species. In P. H. Gregory (Ed.), Phytophthora disease of cocoa (pp. 51-70). London: Longman.
282. Weir, B. S., Paderes, E. P., Anand, N., Uchida, J. Y., Pennycook, S. R., Bellgard, S. E., & Beever, R. E. (2015). A taxonomic revision of Phytophthora Clade 5 including two new species, Phytophthora agathidicida and P. cocois. Phytotaxa, 205(1), 21-38. http://dx.doi.org/10.11646/phytotaxa.205.1.2.
283. West, J. (1936). Black pod of cacao: Experimental control on native farms. Bulletin Department Agriculture of Nigeria, 11, 55-64.
284. Weste, G. (1983). Population dynamics and survival of Phytophthora. In D. C. Erwin, S. - Bartnicki-Garcia, & P. H. Tsao (Eds.), Phytophthora: Its biology, taxonomy, ecology, and pathology (pp. 237-257). St. Paul, MN: American Phytopathological Society.
285. Wharton, A. L. (1954). Black pod disease. Report of the West African Cocoa Research Institute of Ghana 1953-54, pp. 27-28.
286. Wharton, A. L. (1957). Black pod disease - resistance and tolerance. In: Cocoa Breeding Conference, Tafo, Ghana, pp. 7-9.
287. Wharton, A. L. (1959). Black pod disease. Report of the West African Cocoa Research Institute of Ghana 1957-58.
288. Wharton, A. L. (1962). Black pod disease: Spraying trails against P. palmivora (Butl.) Butl.: Resistance and tolerance. Report of the West African Cocoa Research Institute of Ghana 1960- 61, pp. 26-29.
289. Wharton, A. L. (1974). Cushion infection. In P. H. Gregory (Ed.), Phytophthora disease of cocoa (pp. 141-148). London: Longman.
290. World Cocoa Foundation. (2012). Cocoa Market Update. Complied by the World Cocoa Foundation. ICE Market Data. https://www.theice.com/marketdata/reports/ReportCenter.shtml
291. Zaiger, D., & Zentmyer, G. A. (1965). Phytophthora canker of cacao in the Caroline Islands. Plant Disease Reporter, 49, 565-567.
292. Zentmyer, G. A. (1966). Role of amino acids in chemotaxis of zoospores of three species of Phytophthora (Abstr.). Phytopathology, 56, 907.
293. Zentmyer, G. A. (1968). Resistance of cacao to P. palmivora. Turrialba, 13, 14-15.
294. Zentmyer, G. A. (1969). Resistance of cacao to Phytophthora palmivora. In: Proceedings of the 2nd International Cocoa Research Conference. Salvador e Itabuna, Bahia, Brasil, 19-- 26 November, 1967, pp. 147-148.
295. Zentmyer, G. A. (1972). Resistance of cacao to Phytophthora palmivora. In: Proceedings of the 4th International Cocoa Research Conference. St. Augustine, Trinidad, 8-18 January, 1972, pp. 469-470.
296. Zentmyer, G. A. (1974). Variation, genetics and geographical distribution of mating types. In P. H. Gregory (Ed.), Phytophthora disease of cocoa. New York: Longman.
297. Zentmyer, G. A. (1976). Distribution of the A’ mating type of Phytophthora cinnamomi. Phytopathology, 66, 701-703.
298. Zentmyer, G. A. (1983). The world of Phytophthora. In D. C. Erwin, S. Bartnicki-Garcia, & P. H. Tsao (Eds.), Phytophthora, its biology, taxonomy, ecology and pathology (pp. 1-8). St. Paul, MN: APS.
299. Zentmyer, G. A. (1988a). Origin and distribution of four species of Phytophthora. Transactions of the British Mycological Society, 91, 367-378.
300. Zentmyer, G. A. (1988b). Taxonomic relationships and distribution of species of Phytophthora causing black pod rot of cacao. In: Proceedings of the 10th International Cocoa Research Conference, Santo Domingo, Dominican Republic. 17-23 May, 1987, Cocoa Producers Alliance, London, pp. 391-395.
301. Zentmyer, G. A., Kaosiri, T., Idosu, G. O., Kellman, M. K. (1981). Morphological Forms of Phytophthora palmivora. In: Proceedings of the 7th International Cocoa Research Conference, 4-12 November 1979, Douala, Cameroun, pp. 291-296.
302. Zentmyer, G. A., Kaosiri, T., & Idosu, G. (1977). Taxonomic variants in the Phytophthora palmivora complex. Transactions of the British Mycological Society, 69, 329-332.
303. Zentmyer, G. A., Mircetich, S. M., & Mitchell, D. J. (1968). Tests for resistance of cacao to Phytophthora palmivora. Plant Disease Reporter, 52, 790-791.
304. Zentmyer, G. A., & Mitchell, D. M. (1970). Distribution of mating types of Phytophthora palmivora (Abstract). Phytopathology, 60, 1543.
305. Zentmyer, G. A., Mitchell, D. J., Jefferson, L., Roheim, J., & Carnes, D. (1973). Distribution of mating types of Phytophthora palmivora. Phytopathology, 63, 663-667.
306. Zhang, Z. G., Zhang, J. Y., Zheng, X. B., Yang, Y. W., & Ko, W. H. (2004). Molecular distinctions between Phytophthora capsici and Ph. tropicalis based on ITS sequences of ribosomal DNA. Journal of Phytopathology, 152(6), 358-364. doi:10.1111/j.1439-0434.2004.00856.x.