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Science 24 December 1976:
Vol. 194. no. 4272, pp. 1418 - 1421
DOI: 10.1126/science.194.4272.1418
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Articles

Bioenergetic Considerations in Cereal Breeding for Protein Improvement

C. R. BHATIA 1 and R. RABSON 1

1 Joint FAO/IAEA Division, International Atomic Energy Agency, Post Office Box 590, A-1011 Vienna, Austria

The bioenergetic implications of changing cereal grain protein concentrations and amino acid compositions by plant breeding are examined. It is shown that increased inputs of carbon assimilates and nitrogen are necessary when increasing protein concentration in cereal grains while maintaining high yields. Also, energetic requirements for obtaining endosperm proteins with a high lysine content in genotypes of maize and barley are slightly higher than in normal lysine stocks. The implications for plant breeding are discussed.

Submitted on June 9, 1976
Accepted on August 10, 1976


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