Breeding American Chestnuts for Blight Resistance

Plant Breeding Reviews

Volumn 33, Issue , 2010, Pages 305-339

  Worthen, Lisa M ^a   Woeste, Keith E ^a   Michler, Charles H ^a  

^a PURDUE UNIVERSITY   (United States)

Author keywords

Breeding American chestnuts for blight resistance chestnut blight v. blight resistance breeding; Local adaptation and long term fitness of reintroduced populations; Population genetics of hybrid chestnut reintroduction and linkage disequilibrium

Indexed keywords

EID: 84871320539     PISSN: None     EISSN: None     Source Type: Book    
DOI: 10.1002/9780470535486.ch7     Document Type: Chapter

References (148)

1. Alexander, M.T., L.M. Worthen, and J.H. Craddock. 2005. Conservation of Castanea dentata germplasm in the southeastern United States. Acta Hort. 693:485-490.
2. Allee, W.C. 1938. The social life of animals. Norton, New York.
3. Anagnostakis, S.L., B. Hau, and J. Kranz. 1986. Diversity of vegetative compatibility groups of Cryphonectria parasitica in Connecticut and Europe. Plant Dis. 70:536-538.
4. Anagnostakis, S.L. 1987. Chestnut blight-the classical problem of an introduced pathogen. Mycologia 79(1):23-37.
5. Anagnostakis, S.L. 1992. Chestnuts and the introduction of chestnut blight. Annu. Rep. Northern Nut Growers Assoc. 83:23-37.
6. Austerlitz, F., S. Mariette, N. Machon, P.H. Gouyon, and B. Godelle. 2000. Effects of colonization processes on genetic diversity: differences between annual plants and tree species. Genetics 154:1309-1321.
7. Berg, E.E., and J.L. Hamrick. 1995. Fine-scale genetic structure of a turkey oak forest. Evolution 49:110-120.
8. Braun, E. 1950. Deciduous forests of eastern North America. Macmillan, New York.
9. Bossema, I. 1979. Jays and oaks: and eco-ethological study of a symbiosis. Behaviour 70:1-117.
10. Brewbaker, J.L. 1957. Pollencytology and self-incompatibility in plants. J.Hered. 48:271-277.
11. Brinkman, M.A., and K.J. Frey. 1977. Yield component analysis of oat isolines that produce different grain yields. Crop Sci. 17:165-168.
12. Buiteveld, J., E. G. Bakker, J. Bovenschen, and S.M.G. deVries. 2001. Paternity analysis in a seed orchard of Quercus robur L. and estimation of the amount of background pollination using microsatellite markers. Forest Gen. 8(4):331-337.
13. Bulmer, M.G. 1971. The effect of selection on genetic variability. Am Nat 105:201-211.
14. Burnham, C.R. 1982. Breeding for chestnut blight resistance. Nutshell 35:8-9.
15. Burnham, C.R. 1986. Chestnut hybrids from USDA breeding programs. J. Am. Chestnut Found. 1(2):8-12.
16. Burnham, C.R., P.A Rutter, and D.W. French. 1986. Breeding blight-resistant chestnuts. Plant Breed Rev. 4:347-397.
17. Buttrick, P.L. 1925. Chestnut in North Carolina. pp. 6-10. In: Chestnut and the chestnut blight in North Carolina. North Carolina Geology and Economy Paper 56.
18. Byers, D.L., and T.R. Meagher. 1992. Mate availability in small populations of plant species with homomorphic sporophytic self-incompatibility. Heredity 68:353-359.
19. Casasoli, M., C. Mattioni, M. Cherubini, and F. Villani. 2001. A genetic linkage map of European chestnut (Castanea sativa Mill.) based on RAPD, ISSR, and isozyme markers. Theor. Appl. Genet. 102:1190-1199.
20. Clapper, R.B. 1952. Relative blight resistance of some chestnut species and hybrids. J Forestry 50:453-455.
21. Clapper, R.B. 1963. A promising new forest-type chestnut tree. J. For. 61:921-922.
22. Clark, J.S., C. Fastie, G. Hurtt, S.T. Jackson, C. Johnson, G.A. King, M. Lewis, J. Lynch, S. Pacala, C. Prentice, E.W. Schupp, T.Webb III, and P.Wyckoff. 1998. The Reid's paradox of rapid plant migration: Dispersal theory and interpretation of paleoecological records. Bioscience 48:13-27.
23. Cook, R., and H.S. Forest. 1979. The American chestnut II: Chestnuts in the Gennessee Valley region, 1978. The Rochester Committee for Scientific Inform. Bul. 226:1-9.
24. Cousens, R., C. Dytham, and R. Law. 2008. Dispersal in plants: A population perspective. Oxford Univ. Press, New York.
25. Cunningham, I.S. 1984. Frank N. Meyer, plant hunter in Asia. Iowa State Univ. Press, Ames.
26. Dane, F., L. K. Hawkins, and H. Huang. 1999. Genetic variation and population structure of Castanea pumila var. ozarkensis. J. Am. Soc. Hort. Sci. 124:666-670.
27. Dane, F., P. Lang, H. Huang, and Y. Fu. 2003. Intercontinental genetic divergence of Castanea species in eastern Asia and eastern North America. Heredity 91:314-321.
28. Daubree, J.B., and A. Kremer. 1993. Genetic and phenological differentiation between introduced and natural populations of Quercus rubra L. Ann. Sci. Forestry 50 (Suppl. 1):271s-280s.
29. Delcourt, H.R. 2002. Forests in peril: Tracking deciduous trees from ice-age refuges into the greenhouse world. McDonald and Woodward Publ., Granville, OH.
30. Delcourt, H.R., and P.A. Delcourt. 1984. Ice age haven for hardwoods. Nat. Hist. 93:22-28.
31. Detwiler, S.B. 1915. The American chestnut tree. Am. Forester 21:957-960.
32. Diller, J.D., and R.B. Clapper. 1969. Asiatic and hybrid chestnut trees in the eastern U.S. States. J. Forestry 67:328-331.
33. Diskin, M., K.C. Steiner, and F.V. Hebard. 2006. Recovery of American chestnut characteristics following hybridization and backcross breeding to restore blight ravaged Castanea dentata. Forest Ecol. Manag. 223:439-447.
34. Double, M.L., and W.L. Macdonald. 2002. Hypovirus deployment, establishment, and spread: Results after six years of canker treatment. Phytopathology 92:S94.
35. Dow, B.D., and M.V. Ashley. 1998. High levels of gene flow in bur oak revealed by paternity analysis using microsatellites. J. Hered. 89:62-70.
36. Ducousso, A., J.P. Guyon, and A. Kremer. 1996. Latitudinal and altitudinal variation of bud burst in western populations of sessile oak (Quercus petraea (Matt) Liebl). Ann. Sci. Forestry 53:775-782.
37. Ellstrand, N.C., and D.R. Elam. 1993. Population genetic consequences of small population size: Implications for plant conservation. Annu Rev. Ecol. Evol. Syst. 24:217-242.
38. Eriksson, G., A. Pliura, J. Fernandez-Lopez, R. Zas, R. Blanco-Silva, F. Villani, G. Bucci, M. Casasoli, M. Cherubini, M. Lauteri, C. Mattioni, C. Monteverdi, A. Sansotta, G. Garrod, M. Mavrogiannis, R. Scarpa, F. Spalato, P. Aravanoupoulos, E. Alizoti, A. Drouzas, C. Robin, T. Barreneche, A. Kremer, R. Botta, D. Marinoni, and A. Akkak. 2005. Management of genetic resources of the multi-purpose tree species Castanea sativa Mill. Acta. Hort. 693:373-386.
39. Falconer, D.S. 1960. Introduction to quantitative genetics. Ronald, New York.
40. Falconer, D.S., and T.F.C. Mackay. 1996. Introduction to quantitative genetics, 4th ed. Longman, Essex, UK.
41. Fernandez-Lopez, J., and R. Alia. 2000. Chestnut (Castanea sativa) genetic resources conservation strategy. Intl Plant Genetic Res. Inst. http://www.ipgri.org. (Accessed July 17, 2008.)
42. Fineschi, S., D. Taurchini, F. Villani, and G.G. Vendramin. 2000. Chloroplast DNA polymorphism reveals little geographical structure in Castanea sativa Mill. (Fagaceae) throughout southern European countries. Mol. Ecol. 9:1495-1503.
43. Frankham, R. 2008. Genetic adaptation to captivity. Mol. Eco. 17:325-333.
44. Fraser, D.J. 2008.Howwell can captive breeding programs conserve biodiversity?Areview of salmonids. Evol. Applications 1:535-586.
45. Grente, J., and S. Sauret. 1969. L'hypovirulence exclusive, phénomène original en pathologie végétale. C.R. Acad. Sci. 268:3173-3176
46. Grente J., and S. Berthelay-Sauret. 1978. Biological control of chestnut blight in France. pp. 4-5. In:W.L. MacDonald, F.C. Chech, J. Luchok, and H.C. Smith (eds.), Proceedings of the American Chestnut Symposium. West Virginia Univ. Books, Morgantown.
47. Griffin, G.J. 2000. Blight control and restoration of the American chestnut. J. Forestry 98 (2):22-27.
48. Griffin, G.J. 1989. Incidence of chestnut blight and survival of American chestnut in forest clearcut and neighboring understory sites. Plant Dis. 73:123-127.
49. Griffin, G.J., F.V. Hebard, R.W.Wendt, and J.R. Elkins. 1983. Survival of American chestnut trees: Evaluation of blight resistance and virulence in Endothia parasitica. Phytopathology 73:1084-1092.
50. Grubb, P.J. 1977. The maintenance of species-richness in plant communities: the importance of the regeneration niche. Biol. Rev. 52:107-145.
51. Hamrick, J.L., M.J.W. Godt, and S.L. Sherman-Broyles. 1992. Factors influencing levels of genetic diversity in woody plant species. New Forests 6:95-124.
52. Han, J.C., G.PWang, D.J. Kong, Q.X. Liu, and X.Y. Zhang. 2007. Genetic diversity of Chinese chestnut (Castanea mollissima) in Hebei. Acta Hort. 760:573-577.
53. Hebard, F.V. 1994. The American Chestnut Foundation breeding plan: beginning and intermediate steps. J. Am. Chestnut Found. 8:21-28.
54. Hebard, F.V. 2002. Notes from Meadowview Research Farms 2001-2002. J. Am. Chestnut Found. 16:7-18.
55. Hebard, F.V. 2004. Notes from Meadowview Research Farms 2003-2004. J. Am. Chestnut Found. 18:34-35.
56. Hebard, F.V. 2005. Notes from Meadowview Research Farms 2004-2005. J. Am. Chestnut Found. 19:27-39.
57. Hebard, F.V. 2006. The backcross breeding program of the American Chestnut Foundation. pp. 61-77. In: K.C. Steiner, and J.E. Carlson (eds.), Restoration of the American chestnut tree to forest lands-Proceedings of a conference and workshop. May 4-6, 2004, North Carolina Arboretum. Natural Resources Rep. NPS/NCR/CUE/NRR-2006/001, National Park Service, Washington, DC.
58. Hewitt, G.M. 1988. Hybrid zones-natural laboratories for evolutionary studies. Trends Ecol. Evol. 3:158-167.
59. Hill, W.G., and J. Rabash. 1986. Models of long-term artificial selection in finite populations with recurrent mutation. Genet. Res. 48:125-131.
60. Hoffman, A.A., and L.H. Rieseberg. 2008. Revising the impact of inversions in evolution: From population genetic markers to drivers of adaptive shifts and speciation? Annu. Rev. Ecol. Evol. Syst. 39:21-42.
61. Huang, H., W.A. Carey, F. Dane, and J.D. Norton. 1996. Evaluation of Chinese chestnut cultivars for resistance to Cryphonectria parasitica. Plant Dis. 80:45-47.
62. Huang, H., F. Dane, and T.L. Kubisiak. 1998. Allozyme and RAPD analysis of the genetic diversity and geographic variation in wild populations of the American chestnut (Fagaceae). Am. J. Bot. 85:1013-1021.
63. Huang, H., F. Dane, and J.D. Norton. 1994. Allozyme diversity in Chinese, Seguin, and American chestnut (Castanea spp.). Theor. Appl. Genet. 88:981-985.
64. Illick, J. 1928. Pennsylvania trees. Pennsylvania Dept. Forest and Water Res. Bul. 11. Harrisburg, PA.
65. Irwin, H. 2003. The road to American chestnut restoration. J. Am. Chestnut Found. 16 (2):6-13.
66. Jacobs, D.F. 2007. Toward development of silvical strategies for forest restoration of American chestnut (Castanea dentata) using blight-resistant hybrids. Biol. Conserv. 137:497-506.
67. Jacobs, D.F., A. Ross-Davis, and A.S. Davis. 2004. Establishment success of conservation tree plantations in relation to silvicultural practices in Indiana, USA. New Forest 28:23-36.
68. Jacobs, D.F., and L.R. Severeid. 2004. Dominance of interplanted American chestnut (Castanea dentata) in southwestern Wisconsin, USA. Forest Ecol. Managm. 191:111-120.
69. Jaynes, R.A. 1974. Genetics of chestnut. Forest Service, USDA, Washington, DC.
70. Jaynes, R.A. 1975. Chestnut. pp. 590-503. In: J. Janick and J. Moore (eds.), Advances in fruit breeding. Purdue Univ. Press, West Lafayette, IN.
71. Jaynes, R.A. 1978. Selecting and breeding blight resistant chestnut trees. pp. 4-6. In:W.L. MacDonald, F.C. Cech, J. Luchok, and C. Smith (eds.), Proceedings of the American chestnut symposium. West Virginia Univ. Books, Morgantown, WV.
72. Jensen, T.S., and O.F. Nielsen. 1986. Rodents as seed dispersers in a heath-oak wood succession. Oecologia 70:214-221.
73. Johansen, A.D., and R.T. Latta. 2003. Mitochondrial haplotype, distribution, seed dispersal, and patterns of postglacial expansion of ponderosa pine. Molec. Ecol. 12:293-298.
74. Johnsen, Ø., and T. Skrøppa. 1996. Adaptive properties of Picea abies progenies are influenced by environmental signals during sexual reproduction. Euphytica 92:67-71.
75. Johnson, W.C., andT.Webb. 1989.The roleofblue jays (Cyanocitta cristata) inthepostglacial dispersal of Fagaceous trees in eastern North America. J. Biogeogr. 16:561-571.
76. Kaplan. N.L., R.R. Hudson, and C.H. Langely. 1989. The 'hitchhiking effect' revisited. Genetics 123:887-889.
77. Kimura, M. 1955. Random genetic drift in multi-allelic locus. Evolution 9:419-435.
78. Koenig, W., and M.V. Ashley. 2003. Is pollen limited? The answer is blowin? in the wind. Trends Ecol. Evol. 18:157-159.
79. Kubisiak, T.L., F.V. Hebard, C.D. Nelson, J. Zhang, R. Bernatzky, H. Huang, S.L. Anagnostakis, and R.L. Doudrick. 1997. Molecular mapping of resistance to blight in an interspecific cross in the genus Castanea. Phytopathology 87:751-759.
80. Kubisiak, T.L., and J.H. Roberds. 2003. Genetic variation in natural populations of American chestnut. J. Am. Chestnut Found. 16(2):42-48.
81. Lang, P., F. Dane, and T.L. Kubisiak. 2006. Phylogeny of Castanea (Fagaceae) based on chloroplast trnT-L-F sequence data. Tree Genet. Genome. 2:132-139.
82. Lang, P., F. Dane, T.L. Kubisiak, and H. Huang. 2007. Molecular evidence for an Asian origin and a unique westward migration of species in the genus Castanea via Europe to North America. Mol. Phylogenet. Evol. 43:49-59.
83. Lang, P., and H. Huang. 1999. Genetic diversity and geographic variation in natural populations of the endemic Castanea species in China. Acta Bot. Sin. 41:651-657.
84. Latta, R.G., and J.B. Mitton. 1999. Historical separation and present gene flow through a zone of secondary contact in ponderosa pine. Evolution 53:769-776.
85. LeCorre, V., andA.Kremer. 2003. Genetic variability at neutralmarkers, quantitative trait loci, and trait in a subdivided population under selection. Genetics 164:1205-1219.
86. LeCorre, V., N. Machon, R.J. Petit, and A. Kremer. 1997. Colonization with long-distance seed dispersal and distribution of maternally inherited diversity in forest trees: a simulation study. Genet. Res. 69:117-125.
87. Lexer, C., D.M. Rosenthal, O. Raymond, L.A. Donovan, and L.H. Rieseberg. 2005. Genetics of species differences in the wild annual sunflowers, Helianthus annuus and H. petiolaris. Genetics 169:2225-2239.
88. Liu, S., and J.E. Carlson. 2006. Selection for Chinese vs. American genetic material in blight resistant backcross progeny using genomic DNA. pp. 133-150. In: K.C. Steiner and J.E. Carlson (eds.), Restoration of the American chestnut tree to forest lands-Proceedings of a conference and workshop. May 4-6, 2004, North Carolina Arboretum. Natural Resources Report NPS/NCR/CUE/NRR-2006/001, National Park Service, Washington, DC.
89. Lynch, M., and R. Lande. 1993. Evolution and extinction in response to environmental change. pp. 234-250. In: P.M. Kareiva, J.G. Kingsolver, and R.B. Huey (eds.), Biotic interactions and global change, Sinauer, Sunderland, MA.
90. Lynch, M., and B. Walsh. 1998. Genetics and analysis of quantitative traits. Sinauer, Sunderland, MA.
91. Maynard Smith, J., and J. Haigh. 1974. The hitch-hiking effect of a favorable gene. Genet. Res. 23:23-35.
92. McCament, C.L., and B.C. McCarthy. 2005. Two-year response of American chestnut (Castanea dentata) seedlings to shelterwood harvesting and fire in a mixed-oak forest ecosystem. Can. J. Forest Res. 35:740-749.
93. McGee, C.E. 1974. Elevation of seed sources and planting sites affects phenology and development of red oak seedlings. For. Sci. 20:160-164.
94. McKay, H.K., and R.G, Latta. 2002. Adaptive population divergence: markers, QTL, and traits. Trends Ecol. Evol. 17:285-291.
95. McKay, J.W. 1942. Self-sterility in the Chinese chestnut (Castanea mollissima). Proc. Am. Soc. Hort. Sci. 41:156-160.
96. McKay, J.W., and H.L. Crane. 1939. The immediate effect of pollen on the fruit of the chestnut. Proc. Am. Soc. Hort. Sci. 36:293-298.
97. Menges, E.S. 1998. Evaluating extinction risks in plant populations. pp. 49-65 In: P.L. Fielder and P.M. Kareiva (eds.), Conservation biology for the coming decade, 2nd ed. Springer, New York.
98. Merkel, H.W. 1906.Adeadly fungus on the American chestnut. Annu. Rep.NewYork Zool. Soc. 10:97-103.
99. Milgroom, M.G., and P. Cortesi. 2004. Biological control of chestnut blight with hypovirulence: A critical analysis. Annu. Rev. Phytopathol. 42:311-338.
100. Nei, M., T. Maruyama, and R. Chakraborty. 1975. The bottleneck effect and genetic variability in populations. Evolution 29:1-10.
101. Newhouse, J.R. 1990. Chestnut blight. Sci. Am. 263(1):106-111.
102. Paillet, F. L., and P.A. Rutter. 1989. Replacement of native oak and hickory tree species by the introduced American chestnut (Castanea dentata) in southwesternWisconsin. Can. J. Bot. 67:3457-3469.
103. Petit, R.J. 2004. Biological invasions at the gene level. Diversity Distrib. 10:159-165.
104. Petit, R.J., and A. Hampe. 2006.Some evolutionary consequences of being a tree.Annu Rev. Ecol. Evol. Syst. 37:187-214
105. Petit, R.J., R. Bialozyt, S. Brewer, R. Cheddadi, and B. Comps. 2001. From spatial patterns of genetic diversity to postglacial migration processes in forest trees. pp. 295-318. In: J. Silvertown and J. Antonovics (eds.), Integrating ecology and evolution in a spatial context. Blackwell Science, Oxford.
106. Petit, R.J., R. Bialozyt, P. Garnier-Gere, and A. Hampe. 2004. Ecology and genetics of tree invasions: From recent introductions to Quaternary migrations. Forest Ecol. Managem. 197:117-137.
107. Pierson, S.A.M., Keiffer, C.H., McCarthy, B.C., and Rogstad, S.H. 2007. Limited reintroduction does not always lead to rapid loss of genetic diversity: An example from the American chestnut (Castanea dentata; Fagaceae). Restor. Ecol. 15:420-429.
108. Pigliucci, M., C. Paoletti, S. Fineschi, and M.E. Malvolti. 1991. Phenotypic integration in chestnut (Castanea sativa Mill.): Leaves versus fruits. Bot. Gaz. (Chicago) 152:514-521.
109. Poorter, L. 2007. Are species adapted to their regeneration niche, adult niche, or both? Am. Nat. 169(4):433-442.
110. Przeworski, M. 2002. The signature of positive selection at randomly chosen loci. Genetics 160:1179-1189.
111. Rajora, O.P., and A. Mosseler. 2001. Challenges and opportunities for conservation of forest genetic resources. Euphytica 118:197-212.
112. Rehfeldt, G.E., C.C.Ying, D.L. Spittlehouse, and D.A. Hamilton. 1999. Genetic responses to climate change in Pinus contorta: Niche breadth, climate change, and reforestation. Ecol. Monogr. 69:375-407.
113. Richardson, D.M. 1998. Forest trees as invasive aliens. Conserv. Biol. 12:18-26.
114. Roane, M.K., G.J. Griffin, and J.R. Elkins. 1986. Chestnut blight, other Endothia diseases, and the genus Endothia. APS Press, St. Paul, MN.
115. Russell, E.W.B. 1987. Pre-blight distribution of Castanea dentata (Marsh.) Borkh. B. Torrey Bot. Club 114:183-190.
116. Rutter, P.J., and R.B. Burnham. 1982. The Minnesota chestnut program-new promise for breeding a blight-resistant American chestnut. pp. 81-90. 73rd Annu. Rep., Northern Nut Growers Assoc. State University of New York, Geneseo, NY.
117. Ryman, N., and L. Laikre. 1991. Effects of supportive breeding on the genetically effective population size. Conserv. Biol. 5:325-329.
118. Savolainen, O., T. Pyhajarvi, and T. Knurr. 2007. Gene flow and local adaptation in trees. Annu. Rev. Ecol. Evol. Syst. 38:595-619.
119. Sax, D.F., and J.H. Brown. 2000. The paradox of invasion. Global Ecol. Biogeogr. 9:363-371.
120. Sebastiani, F. 2003. Sequenziamento del genoma del cloroplasto del castagno, Castanea sativa Mill. PhD Thesis, Univ. Florence, Italy.
121. Sebastiani, F., S. Carnevale, and G.G. Vendramin. 2004. A new set of mono-and dinucleotide chloroplast microsatellite markers in Fagaceae. Mol. Ecol. Notes 4:259-261.
122. Selig, M.F., J.R. Seifert, and D.F. Jacobs. 2005. Response of American chestnut to weed control treatments at plantation establishment. J. Am. Chestnut Found. 19(1):33-41.
123. Sisco, P.H. 2004. Breeding blight resistant American chestnut trees. J.Am.Chestnut Found. 18(1):15.
124. Sisco, P.H., T.L.Kubisiak, M. Casasoli, T. Barreneche, A. Kremer, C. Clark, R.R. Sederoff, F.V. Hebard, and F.Villani. 2005.Animproved geneticmap for Castaneamollissima/Castanea dentataandits relationship to the geneticmapofCastaneasativa.ActaHort. 693:491-495.
125. Slatkin, M. 1978. Spatial patterns in the distributions of polygenic traits. J. Theor. Biol. 70:213-228.
126. Slavov, G.T., Howe, G.T., andW.T. Adams. 2005. Pollen contamination and mating patterns in a Douglas-fir seed orchard as measured by simple sequence repeat markers. Can. J. Forestry Res. 35:1592-1603.
127. Steele, M.A., B.C. McCarthy, and C.H. Keefer. 2005. Seed dispersal, seed predation, and the American chestnut. J. Am. Chestnut Found. 19:47-54.
128. Steiner, K.C. 1998. A decline-model interpretation of genetic and habitat structure in oak populations and its implications for silviculture. Eur. J. For. Path. 28:113-120.
129. Steiner, K.C. 2006. Regional adaptation in American chestnut. pp. 123-126. In: K.C. Steiner and J.E. Carlson (eds.), Restoration of the American chestnut tree to forest lands-Proceedings of a conference and workshop. May 4-6, 2004, North Carolina Arboretum. Natural Resources Report NPS/NCR/CUE/NRR-2006/001, National Park Service, Washington, DC.
130. Steiner, K.C., and P.C. Berrang. 1990. Microgeographic adaptation to temperature in pitch pine progenies. Am. Midl. Nat. 123:292-300.
131. Steiner, K., A. Ellingboe, S. Friedman, F. Hebard, H. Irwin, P. Sisco, and S. Schlarbaum. 2004. TACF adopts guidelines for testing blight-resistant American chestnuts. J. Am. Chestnut Found. 18(1):7.
132. Stephens, P.A., and W.J. Sutherland. 1999. Consequences of the Allee effect for behavior, ecology, and conservation. Trends Ecol. Evol. 14:401-405.
133. Stilwell, K.L., H.M.Wilbur, C.R.Werth, and D.R. Taylor. 2003. Heterozygote advantage in the American chestnut, Castanea dentata (Fagaceae). Am. J. Bot. 90:207-213.
134. Stout, A.B. 1928. Dichogamy in flowering plants. B. Torrey Bot. Club 55:141-153.
135. Streiff, R., T. Labbe, R. Bacilieri, H. Steinkellner, J. Glossl, and A. Kremer. 1998. Withinpopulation genetic structure in Quercus robur L. and Quercus petraea (Matt.) Liebl. assessed with isozymes and microsatellites. Mol. Ecol. 7:317-328.
136. Tanaka, T., T. Yamamoto, and M. Suzuki. 2005. Genetic diversity of Castanea crenata in Northern Japan assessed by SSR markers. Breed. Sci 55:271-277.
137. Vermeij, G.J. 1996. An agenda for invasion biology. Biol. Conserv. 78:3-9.
138. Villani, F., M. Lauteri, A. Sansotta, and M. Kucuk. 1999a. Genetic structure and quantitative trait variation in F1 full-sib progenies of Castanea sativa Mill. Acta. Hort. 494:395-405.
139. Villani, F., M. Pigliucci, S. Benedettelli, and M. Cherubina. 1991. Genetic differentiation among Turkish chestnut (Castanea sativa Mill.) populations. Heredity 66:131-136.
140. Villani, F., M. Pigliucci, and M. Cherubini. 1994. Evolution of Castanea sativa Mill. in Turkey and Europe. Genet. Res. Camb. 63:109-116.
141. Villani, F., M. Pigliucci, M. Lauteri, and M. Cherubini. 1992. Congruence between genetic, morphometric, and physiological data on differentiation of Turkish chestnut (Castanea sativa). Genome 35:251-256.
142. Villani, F., A. Sansotta, M. Cherubini, D. Cesaroni, and V. Sbordoni. 1999b. Genetic structure of natural populations of Castanea sativa in Turkey: Evidence of a hybrid zone. J. Evol. Biol. 12:233-244.
143. Walsh, B. 2008. Using molecular markers for detecting domestication, improvement, and adaptation genes. Euphytica 161:1-17.
144. Wang, Y., M. Kang., and H. Huang. 2006. Subpopulation genetic structure in a panmicitc population as revealed by molecular markers: A case study of Castanea seguinii using SSR markers. J. Plant Ecol. 30:147-156.
145. Weeks, S., H. Weeks, and G.R. Parker. 2005. Native trees of the Midwest: Identification, wildlife values, and landscape use. Purdue Univ. Press, West Lafayette, IN.
146. White, T.L., W.T. Adams, and D.B. Neale. 2007. Forest genetics. CAB Intl, Cambridge, UK.
147. Willi, Y., J. Van Buskirk, and A.A. Hoffman. 2006. Limits to the adaptive potential of small populations. Annu. Rev. Ecol. Evol. S 37:433-458.
148. Wright, S. 1931. Evolution in Mendelian populations. Genetics 16:97-159.