Breeding for micronutrient density in edible portions of staple food crops: Conventional approaches

Field Crops Research

Volumn 60, Issue 1-2, 1999, Pages 57-80

  Graham, Robin ^a   Senadhira, D ^b   Beebe, Steven ^c   Iglesias, Carlos ^c   Monasterio, Ivan ^d  

^a UNIVERSITY OF ADELAIDE   (Australia)

^b INTERNATIONAL RICE RESEARCH INSTITUTE   (Philippines)

^c INTERNATIONAL CENTER FOR TROPICAL AGRICULTURE CIAT   (Colombia)

^d INTERNATIONAL MAIZE AND WHEAT IMPROVEMENT CENTER CIMMYT   (Mexico)

Author keywords

Genetic variation; Genetics; Micronutrient density; Plant breeding; Selection; Staple foods

Indexed keywords

CULTIVAR; DETERMINATION OF CONTENT; GENETIC DIVERSITY; MICRONUTRIENT; PLANT BREEDING; PLANT GENETICS;

EID: 0032999717     PISSN: 03784290     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0378-4290(98)00133-6     Document Type: Article

References (123)

1. Alvarez J.B., Martin L.M., Rogers W.J., Martin A. Relationship between the endosperm storage proteins composition and the breadmaking quality in hexaploid tritordeum. Cereal Res. Comm. 23:1995;167-172.
2. AVRDC, 1988. Progress Report. Asian Vegetable Research and Development Center, Shanhua, Taiwan. pp. 223-224.
3. Axtell, J.D., 1981. Breeding for Improved Nutritional Quality (Food Crops). Plant Breeding II: Proceedings. Iowa State University Press, Ames, USA.
4. Bellotti, A., Riis, L., 1994. Cassava cyanogenic potential and resistance to pests and diseases. In. Bokanga, M. et al. (Eds.). Proceedings of an International Workshop on Cassava Safety. Acta Horticulturae 375, 141-151.
5. Bjarnason M., Vasal S.K. Breeding of quality protein maize (QPM). Plant Breed. Rev. 9:1992;181-216.
6. Bliss F.A., Hall T.C. Food legumes - compositional and nutritional changes induced by breeding. Cereal Foods World. 22:1977;106-113.
7. Bouis, H.E., 1995. Plant breeding and food policy to reduce micronutrient malnutrition: CGIAR strategies for improving dietary quality. A proposal. International Food Policy Research Institute, Washington, DC.
8. Bressani R., Elias L.E., Braham J.E. Reduction of digestibility of legume protein by tannins. J. Plant Foods. 4:1982;43-55.
9. Camara, B., Schantz, R., Monegar, R. 1992. Enzymology and genetic regulation of carotenoid biosynthesis in plants. In: Bills, D.D., Kung, S.-Y (Eds.). Biotechnology and Nutrition, Butterworth-Heinemann, Boston. pp. 301-314.
10. Canevara M.G., Romani M., Corbellini M., Perenzin M., Borghi B. Evolutionary trends in morphological, physiological, agronomical and qualitative traits of Triticum aestivum L. cultivars bred in Italy since 1900. European J. Agron. 3:1994;175-185.
11. Carver B.F., Rayburn A.L. Comparison of related wheat stocks possessing 1B or T1BL.1RS chromosomes: grain and flour quality. Crop Sci. 35:1995;1316-1321.
12. Chang, T.T., Somrith, B., 1979. Genetic studies on the grain quality of rice. In: Proc. Workshop on chemical aspects of rice grain quality. International Rice Research Institute, P.O. Box 933, Manila, Philippines. pp. 49-58.
13. Chang W.L., Li W.Y. Inheritance of amylose content and gel consistency in rice. Bot. Bull. Acad. Sin. 22:1981;35-47.
14. CIAT, 1993a. Cassava Program Annual Report 1993. Working Document 146. CIAT, Cali, Colombia. pp. 325.
15. CIAT. 1993b. Cassava Program Report 1987-1989. CIAT, Cali, Colombia, pp. 171-186.
16. CIAT, 1994. Cassava Program Annual Report 1994. CIAT, Cali, Colombia.
17. Clark L.C., Combs G.F., Turnbull B.W., Slate E.H. Effects of selenium supplementation for cancer prevention in patients with carcinoma of the skin. A randomized controlled trial. J. Am. Med. Assoc. 276(24):1996;1957-1963.
18. Coffman, W.R., Juliano, B.O., 1987. Rice. In: Olsen, R.A. (Ed.) Nutritional Quality of Cereal Grains: Genetic and Agronomic Improvement. Agron. Monogr. ASSA-CSSA-SSSA, Madison, WI. pp. 101-131.
19. Combs, Jr., G.F., 1995. Emphasising fruits and vegetables in American diets: implications for vitamin and mineral intakes. Division of Nutritional Sciences Conference, Cornell University, Ithaca, NY. pp. 52-57.
20. Costa J.M., Kronstad W.E. Association of grain protein concentration and selected traits in hard red winter wheat populations in the Pacific Northwest. Crop Sci. 34:1994;1234-1239.
21. Coyne D.P., Korban S.S., Knudsen D., Clark R.B. Inheritance of iron deficiency in crosses of dry beans (Phaseolus vulgaris L.). J. Plant Nutr. 5:1982;575-585.
22. Delzer B.W., Busch R.H., Hareland G.A. Recurrent selection for grain protein in hard red spring wheat. Crop Sci. 35:1995;730-735.
23. Dickson, M.H., Hackler, L.R. 1973. Protein quantity and quality in high yielding beans. In, Milner, M. (Ed.), Nutritional Improvement of Food Legumes by Breeding. FAO, New York, NY. pp. 185-192.
24. Dixon, A.G.O., Asiedu, R., Bokanga, M., 1994. Breeding of cassava for low cyanogenic potential: problems, progress and prospects. In: Bokanga, et al. (Eds.) Proc. Int. Workshop on Cassava Safety. IITA, Ibadan, Nigeria. pp. 153-161.
25. Dudley, J.W. (Ed.)., 1974. Seventy Generations of Selection for Oil and Protein Percentage in Maize. Crop Sci. Soc. Am., Madison, WI.
26. Epstein, E., 1972. Mineral Nutrition of Plants: Principles and Perspectives. Wiley, New York.
27. FAO/WHO/UNU, 1985. Energy and Protein Requirements. WHO Tech. Rep. Series 724. World Health Organization, Geneva.
28. Faridi, M.N.I., Choudhury, M.Y., Hanif, M.A., 1982. Effect of phosphorus and zinc fertilizer on yield and quality of wheat. Bangladesh Association for the Advancement of Science, Dakka. Proceedings of the 6th and 7th Bangladesh Science Conference. Dakka, Bangladesh. pp. 24-25.
29. Fehr W.R. Control of iron deficiency chlorosis in soybeans by plant breeding. J. Plant Nutr. 5:1982;611-621.
30. Fenn D., Lukow O.M., Bushuk W., DePauw R.M. Milling and baking quality of 1BL/1RS translocation wheats. I. Effects of genotype and environment. Cereal Chem. 71:1994;189-195.
31. Flynn A.G., Panozzo J.P., Gardener W.K. The effect of copper deficiency on the baking quality and dough properties of wheat flour. J. Cereal Sci. 6:1987;91-98.
32. Gabelman W.H., Peters S. Genetical and plant breeding possibilities for improving quality of vegetables. Acta Horti. 93:1979;243-263.
33. Glahn R.P., Wien E.M., Van Campen D.R., Miller D.D. Caco-2 cell iron uptake from meat and casein digests parallels in vitro studies: use of a novel in vitro method for rapid estimation of iron bioavailability. J. Nutr. 126:1996;332-339.
34. Glaszmann J.C. Isozymes and classification of Asian rice varieties. Theor. Appl. Genet. 74:1987;21-30.
35. Glover, D.V., Mertz, E.T., 1987. Corn. In: Olson, R.A., Frey, K.J. (Eds.). Nutritional Quality of Cereal Grains: Genetic and Agronomic Improvement. ASA monograph 28. Amer. Soc. Agron., Madison, WI. pp. 183-336.
36. Goblirsch C.A., Horsley R.D., Schwarz P.B. A strategy to breed low-protein barley with acceptable kernel color and diastatic power. Crop Sci. 36:1996;41-44.
37. Gomez K.A., De Datta S.K. Influence of environment on protein content of rice. Agron. J. 67:1975;565-568.
38. Graham G.G., Lembcke J., Lancho E., Morales E. Quality protein maize: digestability and utilization by recovering malnourished infants. Pediatrics. 83:1989;416-421.
39. Graham R.D. Breeding for nutritional characteristics in cereals. Adv. Plant Nutr. 1:1984;57-102.
40. Graham, R.D., 1988. Genotypic differences in tolerance to manganese deficiency. In: Graham, R.D., Hannam, R.J., Uren, N.C. (Eds). Manganese in Soils and Plants. Kluwer Academic Publishers, Dordrecht, The Netherlands. pp. 261-276.
41. Graham, R.D., 1991. Breeding wheats for tolerance to micronutrient deficient soil: present status and priorities. In: Saunders, D.A. (Ed.). Wheat for the Nontraditional Warm Areas, CIMMYT., Mexico D.F. pp. 315-332.
42. Graham, R.D., Rengel, Z., 1993. Genotypic variation in zinc uptake and utilization. In: Robson, A.D. (Ed.), Zinc in Soils and Plants. Chapter 8. Kluwer Academic Publishers, Dordrecht, The Netherlands. pp. 107-118.
43. Graham, R.D., Welch, R.M., 1996. Breeding for staple-food crops with high micronutrient density. Working papers on agricultural strategies for micronutrients, No 3. International Food Policy Research Institute, Washington, D.C. pp. 80.
44. Graham R.D., Anderson G.D., Ascher J.S. Absorption of copper by wheat, rye and some hybrid genotypes. J. Plant Nutr. 3:1981;679-686.
45. Graham R.D., Ascher J.S., Ellis P.A.E., Shepherd K.W. Transfer to wheat of the copper efficiency factor carried on rye chromosome arm 5RL. Plant Soil. 99:1987;107-114.
46. Graham R.D., Ascher J.S., Hynes S.C. Selecting zinc-efficient cereal genotypes for soils of low zinc status. Plant and Soil. 146:1992;241-250.
47. Graham R.D., Senadhira D., Ortiz-Monasterio I. A strategy for breeding staple-food crops with high micronutrient density. Soil Sci. Plant Nutr. 43:1997;1153-1157.
48. Hartwig E.E., Jones W.F., Kilen T.C. Identification and inheritance of inefficient zinc absorption in soybean. Crop Sci. 31:1991;61-63.
49. House, W.A., 1999. Trace element bioavailability as exemplified by iron and zinc. Field Crops Res., 60, 115-141.
50. Hrishi, N., Jos, J.S., 1977. Breeding for protein enhancement in cassava. In: Proc. 3rd. Symp. Int. Soc. Trop. Root Crops, Ibadan, Nigeria, 2-9 Dec. 1973. IITA, Ibadan, Nigeria. pp. 11-13.
51. Huang, J.F., 1990. The relation between soil nutrients and rice qualities. Trans. 14th Intl. Congr. Soil Sci., Kyoto, 12-18 Aug. 1990. 4, 170-175.
52. Iglesias, C., Hershey, C., 1994. Cassava breeding at CIAT: heritability estimates and genetic progress in the 1980s. In: Ofori, F., Hahn, S.K. (Eds.). Proceedings of the 9th Symposium of the ISTRC, 20-26 October 1991, Accra, Ghana. pp. 149-163.
53. Iglesias C.A., Calle F., Hershey C., Jaramillo G. Sensitivity of cassava (Manihot esculenta Crantz) clones to environmental changes. Field Crops Res. 36:1994;213-220.
54. Iglesias C., Mayer J., Chavez L., Calle F. Genetic potential and stability of carotene content in cassava roots. Euphytica. 94:1997;367-373.
55. IRRI (International Rice Research Institute) 1976. Annual report for 1975. P.O. Box 933, Manila, Philippines. pp. 479.
56. IRRI (International Rice Research Institute) 1977. Annual report for 1976. P.O. Box 933, Manila, Philippines. pp. 418.
57. IRRI, 1979. Annual Report, International Rice Research Institute, Los Banos, The Philippines.
58. IRRI [International Rice Research Institute] 1983. Annual report for 1982. P.O. Box 933, Manila, Philippines. pp. 532.
59. IRRI [International Rice Research Institute] 1985. Rice grain quality and marketing. IRRI, P.O. Box 933, Manila, Philippines. pp. 74.
60. IRRI [International Rice Research Institute] 1991. Rice grain marketing and quality issues. IRRI, P.O. Box 933, Manila, Philippines. pp. 66.
61. Jos J.S., Nair S.G., Moorthy S.N., Nair R.B. Carotene enhancement in cassava. J. Root Crops. 16:1990;5-11.
62. Juliano, B.O., 1993. Rice in human nutrition. FAO Food and Nutrition Series, No. 26, Rome. pp. 163.
63. Juliano, B.O., Villareal, C.P., 1993. Grain quality evaluation of world rices. International Rice Research Institute, P.O. Box 933, Manila, Philippines. pp. 205.
64. Kelly, J.D., Bliss, F.A., 1975a. Heritability estimates of percentage seed protein and available methionine and correlations with yield in dry beans. Crop Sci. 15 753-757.
65. Kelly, J.D., Bliss, F.A., 1975b. Quality factors affecting the nutritive value of bean seed protein. Crop Sci. 15 757-760.
66. Kornegay, J., Cardona, C., 1991. Breeding for insect resistance in beans. In: van Schoonhoven, A., Voysest, O. (Eds.). Common Beans: Research for Crop Improvement. C.A.B. International, Wallingford, UK. pp. 619-648.
67. Lee J.H., Graybosch R.A., Peterson C.J. Quality and biochemical effects of a 1BL/1RS wheat-rye translocation in wheat. Theo. Appl. Genetics. 90:1995;105-112.
68. van Lill D., Purchase J.L. Directions in breeding for winter wheat yield and quality in South Africa from 1930 to 1990. Euphytica. 82:1995;79-87.
69. Lolas G.M., Markakis P.J. Phytic acid and other phosphorus compounds of beans (Phaseolus vulgaris L.). J. Agric. Food Chem. 23:1975;13-15.
70. Lukaszewski A.J. Genetic mapping in the 1R.1D wheat-rye translocated chromosomes. Genome. 37:1994;945-949.
71. Ma Y., Bliss F. Tannin content and heritability in common bean. Crop Sci. 18:1978;201-204.
72. Mahungu, N.M., 1987. Selection for improved root quality in cassava. In: Hershey, C.H. (Ed.). Cassava Breeding: a Multidisciplinary Review. CIAT, Cali, Colombia. pp. 89-103.
73. Majumder N.D., Rakshit S.C., Borthakur D.N. Genetic effects on uptake of selected nutrients in some rice (Oryza sativa L.) varieties in phosphorus deficient soil. Plant Soil. 123:1990;117-120.
74. Makhdoom, M.U., Suhog, S.M., Memon, M.A., 1988. Influence of copper and zinc fertilization on the yield and quality of wheat. Proceedings of the National Seminar on Micronutrients in Soils and Crops in Pakistan, Peshawar. December 13-15, 1987, NAUP. pp. 233-238.
75. McCarthy, K.W., Longnecker, N.E., Sparrow, D.H.B., Graham, R.D., 1988. Inheritance of manganese efficiency in barley (Hordeum vulgare L.), In: Webb, M.J., Nable, R.O., Graham, R.D., Hannam, R.J. (Eds.). International Symposium on Manganese in Soils and Plants: Contributed Papers. Manganese Symposium, 1988 Inc., Adelaide. pp. 121-122.
76. McKendry A.L., Berg J.E., Tague D.N., Kephart K.D. Registration of 'Ernie' wheat. Crop Sci. 35:1995;1513.
77. Mertz E.T., Bates L.S., Nelson O.E. Mutant gene that changes protein composition and increases lysine content of maize endosperm. Science. 145:1964;279-280.
78. Milner, M., 1973. Nutritional Improvement of Food Legumes by Breeding. FAO, NY.
79. Moorthy S.N., Jos J.S., Nair R.B., Sreekumari M.T. Variability of β-carotene content in cassava germplasm. Food Chem. 36:1990;233-236.
80. Moorthy, S.N., Blanshard, J.M.Y., Rickard, J., 1993. Starch properties in relation to cooking quality in cassava. In: Roca, W., Thro, A.M. (Eds.). Proc. 1st. Int. Scientific Meeting of the Cassava Biotechnology Network. CIAT, Cali, Colombia. pp. 265-269.
81. Nakata N., Kinoshita O., Tsuji Y., Tomita M., Yamada T., Yasumuro Y. Effect of the Glu-D1d gene for high bread-making quality on expression of other agronomic characters in Japanese common wheat cultivars. J. Faculty Agri., Tottori University. 30:1994;7-15.
82. O'Bryen G.M., Wheatley C.C., Iglesias C., Poulter N.H. Evaluation, modification and comparison of two rapid assays for cyanogens in cassava. J. Sci. Food Agric. 65:1994;391-399.
83. Olorunda A.O., Aworth O.C., Numfor F.A. Predicting quality of cassava products with the aid of chemical and rheological properties. J. Food Tech. 16:1981;447-450.
84. Olsen, R.A., Frey, K.J. (Eds.), 1987. Nutritional Quality of Cereal Grains: Genetic and Agronomic Improvement. ASA Monograph 28. Am. Soc. Agron., Madison, WI, pp. 511.
85. Ortega-Flores, C.I., 1991. Carotenóides com atividade pró-vitamínica A e teores de cianeto em diferentes cultivares de mandioca no Estado de Sao Paulo. (Carotenes with pro-vitamin A activity and levels of cyanide in different cultivars from the State of Sao Paulo). M.S. Thesis. Universidade de Sao Paulo. Sao Paulo, Brazil. pp. 77.
86. Oti-Boateng, P., 1998. Ph.D. dissertation. University of Adelaide, Adelaide, South Australia.
87. Pearson J.N., Rengel Z., Jenner C.F., Graham R.D. Dynamics of zinc and manganese into developing wheat grains. Aust. J. Plant Physiol. 25:1998;139-144.
88. Peltonen-Sainio P., Peltonen J. Progress since the 1930s in breeding for yield, its components, and quality traits of spring wheat in Finland. Plant Breeding. 113:1994;177-186.
89. Pennington J.A.T., Young B. Iron, zinc, copper, manganese, selenium, and iodine in foods from the United States total diet study. J. Food Compos. Anal. 3:1990;166-184.
90. Pixley K.V., Bjarnason M.S. Combining ability for yield and protein quality among modified-endosperm opaque-2 tropical maize inbreds. Crop Sci. 33:1993;1229-1234.
91. Ponnamperuma, F.N., 1976. Screening rice for tolerance to mineral stresses. In: Wright, M.J. (Ed.), Plant Adaptation to Mineral Stress in Problem Soils. pp. 341-353. Cornell Univ. Agric. Exp. Stn., Ithaca, NY.
92. Porter, J.W., Spurgeon, S.L., Sathyamoorthy, N., 1984. Biosynthesis in Carotenoids. In: Isopentenoids in Plants: Biochemistry and Function. Marcel Dekker, NY. pp. 181-183.
93. Ramiah K., Parthasarathy N. Inheritance of grain length in rice. Indian J. Agric. Sci. 3:1933;808-819.
94. Ramiah K., Jobitharaj S., Mudliar S.D. Inheritance of characters in rice - Part 4. Mem. Dept. Agric. India, Bot. Ser. 18:1931;229-259.
95. Rao, B.S.N., Prabhavathi, T., 1982. Tannin content of foods commonly consumed in India and its influence on ionisable iron. J. Sci. Food Agric. 33, 89-96.
96. Rao V.S., Gangwar M.S., Rathore V.S. Genotypic variation in distribution of total and labelled zinc and availability of zinc (A and L values) to soybeans grown in mollisol. J. Agric. Sci. 8:1977;417-420.
97. Rengel Z., Graham R.D. Importance of seed Zn content for wheat growth on Zn-deficient soil. I. Vegetative growth. Plant and Soil. 173:1995;259-266.
98. Ripperger H., Schreiber K. Nicotianamine and analogous amino acids, endogenous iron carriers in higher plants. Heterocycles. 17:1982;447-461.
99. Robellen, G., 1977. Possibilities and limitations of breeding for nutritional improvement of cereals. In: Nutritional Evaluation of Cereal Mutants. AIEA, Vienna. pp. 47-57.
100. Rose I.A., Felton W.L., Banke L.W. Response of four soybean varieties to foliar zinc fertilizer. Aust. J. Exp. Agric. Anim. Husb. 21:1981;236-240.
101. Sadeghian, S., 1991. Influencia de algunas caracteristicas de las semillas de frijol Phaseolus vulgaris L. sobre la tolerancia a la baja disponibilidad de fosforo en el suelo. Agronomist thesis, Universidad Nacional de Colombia, Palmira, Colombia.
102. Saldamli I., Koksel H., Ozboy O., Ozalp I., Kilic I. Zinc-supplemented bread and its utilization in zinc deficiency. Cereal Chem. 73:1996;424-427.
103. Saxena S.C., Chandel A.S. Effect of zinc fertilization on different varieties of soybean (Glycine max). Indian J. Agric. Sci. 62:1992;695-697.
104. Schachtman D.P., Barker S.J. Molecular approaches for increasing the micronutrient density of edible portions of crops. Field Crops Res. 60:1999;81-92.
105. Shellie-Dessert, K., Bliss, F.A., 1991. Genetic improvement of food quality factors. In: A. van Schoonhoven, Voysest, O. (Eds.). Common Beans: Research for Crop Improvement. C.A.B. International, Wallingford, UK. pp. 649-677.
106. Siegenberg D., Baynes R.D., Bothwell T.H., Macfarlane B.J., Lamparelli R.D., Car N.G., Macphail P., Schmidt U., Tal A., Mayet F. Ascorbic acid prevents the dose-dependent inhibitory effects of polyphenols and phytates on nonheme-iron absorption. Am. J. Clin. Nutr. 53:1991;537-541.
107. Singh S.P., Gepts P., Debouck D.G. Races of common bean (Phaseolus vulgaris; Fabaceae). Econ. Bot. 45(3):1991;379-396.
108. Stevens, M.A., Rick, C.M., 1986. Genetics and breeding. In: Atherton, J.G., Rudich, J. (Eds.) The Tomato Crop. University Press, Cambridge, UK. pp. 35-109.
109. Taylor G.A., Bowman H.F., Wichman D.M., Carlson G.R., Eckhoff J.L., McGuire C.F., Stallknecht G.F., Kushnak G.D., Stewart V.R., Jackson G.D., Hockett E.A., Bruckner P.L. Registration of 'Judith' wheat. Crop Sci. 35:1995;1512-1513.
110. Tigchelaar, E.C., 1986. Tomato breeding. In: Basset, M. (Ed.). Breeding Vegetable Crops. AVI Publishing, Westport, Conn. pp. 135-171.
111. Tisdale, S.L., Nelson, W.L., 1973. Soil Fertility and Fertilisers. 2nd ed. Macmillan, NY.
112. Tohme, J., Jones, P., Beebe, S., Iwanaga, M., 1994. The combined use of agroecological and characterization data to establish the CIAT Phaseolus vulgaris core collection. In: Hodgkin, T., Brown, A.H.D., van Hintium, Th. J.L., Morales, E.A.V. (Eds.). Core Collections of Plant Genetic Resources, J. Wiley & Sons, Chichester, UK. pp. 95-107.
113. Tomes M.L., Quackenbush F.W. Caro-Red, a new provitamin A rich tomato. Econ. Bot. 12:1968;256-260.
114. Tomes M.L., Quackenbush F.W., Kargl T.E. Action of the gene b in biosynthesis of carotenes in tomato. Bot. Gaz. 117:1956;248-253.
115. Voysest, O., 1983. Variedades de frijol en America Latina y su origen. Centro Internacional de Agricultura Tropical, Cali, Colombia. pp. 87.
116. Wang J.S., Liu G.T., Wang Y.G. Inheritance of grain quality characters in Triticum aestivum and the effect of early generation selection. I. Correlations among quality characters and the relation between yield components in various populations. Acta Agriculturae Universitatis Pekinensis. 20:1994;239-245.
117. Weiss M.G. Inheritance and physiology of efficiency in iron utilization in soybeans. Genetics. 28:1943;253-268.
118. Welch, R.M., 1995. Micronutrient nutrition of plants. Ctitical Reviews of Plant Sciences, 14, 49-82.
119. Windes J.M., Souza E., Sunderman D.W., Goates B.J. Registration of four wheat germplasms resistant to dwarf bunt: Idaho 352, Idaho 364, Idaho 443, and Idaho 444. Crop Sci. 35:1995;1239-1240.
120. Wych R.D., Rasmusson D.C. Genetic improvement in malting barley cultivars since 1920. Crop Sci. 23:1983;1037-1040.
121. Xue-Yi, Cao, Kareem, A., Rakeman, M.A., O'Donnell, K., DeLong, N., 1994. Iodination of irrigation water as a method of supplying iodine to a severely iodine-deficient population in Xinjiang, China. Lancet 344, 107-110.
122. Yan X., Lynch J.P., Beebe S.E. Genetic variation for phosphorus efficiency of common bean in contrasting soil types: I. Vegetative response. Crop Sci. 35:1995;1086-1093.
123. Van Campen D.R., Glahn R.P. Micronutrient bioavailability techniques: Accuracy, problems and limitations. Field Crops Res. 60:1999;93-113.