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The effect of varying nitrogen supply on the protein composition of a high lysine mutant of barley
Author(s) -
Rhodes Anthony P.,
Jenkins Graham
Publication year - 1975
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740260517
Subject(s) - lysine , proline , amino acid , glutamic acid , nitrogen , mutant , mink , composition (language) , threonine , chemistry , biochemistry , food science , cultivar , essential amino acid , arginine , agronomy , biology , enzyme , serine , organic chemistry , gene , ecology , linguistics , philosophy
Amino acid analyses of the grain of barley cultivars Risø 1508, Hiproly and Maris Mink carried out using grain of comparable protein levels have shown that the amino acid composition of Risø mutant 1508 is fundamentally different from that of the other varieties. A high proportional content of lysine and other nutritionally essential amino acids in Risø 1508 is achieved mainly at the expense of large decreases in glutamic acid and proline. Furthermore, a high lysine content in Risø mutant 1508 was maintained when the level of grain protein was raised by increasing the supply of nitrogen fertiliser.