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Major Gene Control of Nitrate Reductase Activity in Common Wheat 1
Author(s) -
Gallagher L. W.,
Soliman K. M.,
Qualset C. O.,
Huffaker R. C.,
Rains D. W.
Publication year - 1980
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1980.0011183x002000060010x
Subject(s) - seedling , biology , nitrate reductase , shoot , poaceae , botany , horticulture , genetic variability , nitrate , gene , genetics , ecology , genotype
Two high‐yielding, short‐statured spring wheats ( Triticum aestivum L.), ‘Anza’ and ‘UC 44‐111,’ differ in certain characteristics of N metabolism. Nitrate reductase activity (NRA), measured in vitro on shoots or lamina of seedling plants, was about 8 and 18 µmoles of nitriteproduced/hour/g fresh weight for Anza and UC 44‐111, respectively. The genetic basis for this difference was investigated with an in vitro NRA assay on seedling plants to determine the NRA frequency distributions of parents, F 1 , F 2 , reciprocal BCF 2 and randomly derived F 6 lines. All data were consistent in showing that UC 44‐111 has a single dominant gene ( Nra ) which accounted for most of the variability observed for NRA.