Major Gene Control of Nitrate Reductase Activity in Common Wheat1
- 1 November 1980
- journal article
- research article
- Published by Wiley in Crop Science
- Vol. 20 (6) , 717-721
- https://doi.org/10.2135/cropsci1980.0011183x002000060010x
Abstract
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, F1, F2, reciprocal BCF2 and randomly derived F6 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.Keywords
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