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Carbohydrate composition of developing grains of the high‐lysine barley mutant (notch‐2) and its parent (NP 113)
Author(s) -
Batra Vijay I. P.,
Bansal Hukam C.,
Mehta Shanti L.
Publication year - 1982
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.2740330107
Subject(s) - amylopectin , starch , amylose , chemistry , carbohydrate , lysine , sugar , food science , fructose , mutant , dry matter , agronomy , biochemistry , biology , amino acid , gene
Barley variety NP 113 had higher accumulations of dry matter (DM) and starch than its high‐lysine mutant, Notch‐2, during grain development. Protein, amylose and amylopectin content per grain were lower in Notch‐2 than NP 113. Reducing sugars, free glucose, total fructose and non‐reducing sugars were 1.57–3.15‐fold in Notch‐2 grain as compared with NP 113 grain. DM, protein, starch, amylose and amylopectin per grain increased during grain development. Soluble sugar contents per grain were maximum at 24 days after anthesis. Lower DM accumulation in the Notch‐2 mutant as compared with its parent, NP 113, is due to lower starch deposition. Further, the limitation of starch synthesis in the Notch‐2 mutant is not due to any limitation in the supply of soluble sugar precursors.