Nitrogen Utilization in High and Low Protein Wheat Varieties¹

Abstract

Synopsis No differences were found in total nitrogen content of vegetative parts of high and low protein wheat varieties prior to heading. After heading nitrogen increased more rapidly in the heads of high protein varieties. Varietal differences in protein content of the kernels were not decreased by growing plants in solution culture, or by foliar applications of urea or nitrate nitrogen.

The effect of soil fertility on the contribution of main stem, tillers and kernel position to grain yield and grain protein content of wheat

“…The same authors reported that the major factors responsible for variation in grain protein content are climate, soil fertility and genotype. The benefits of applying nitrogen fertilizer to increase both yield and grain protein levels in wheat have been reported by many research workers (McNeal & Davis, 1954;Finney, Meyer, Smith & Fryer, 1957;Seth, Herbert & Middleton, 1960;Alkier, Raczs & Soper, 1972;Strong, 1982;Randall, Freney, Smith, Moss, Wrigley & Gallaby, 1990). Inverse relationships between protein content of wheat grains and yield level have also been reported (Malloch & Newton, 193.4;Terman, Ramig, Dreier &.…”

Cultivar Variation in Total Nitrogen Uptake in Rape

“…at maturity was due to differential niffogen Seth et al (1960) and Johnson et al uptake. (1967Johnson et al uptake.…”

Hexaploid wild emmer wheat derivatives grown under New Zealand conditions 2. Effect of foliar urea sprays on plant and grain nitrogen and baking quality

“…Only Oroua, V763-17, and V763-252 appeared to respond to higher rates of applied nitrogen. The late application of urea probably prevented a consistent response (Seth et al 1960). The highest plant dry weights were recorded from BTL, V763-252, and V763-2332.…”

“…Differences between "high protein" and "low protein" cultivars have been related to the efficiency of nitrogen translocation from the various organs to the developing seed (Seth et al 1960;Johnson et al 1969). Kushnir & Halloran (1984) showed differences in efficiency of translocation of metabolised nitrogen from the plant into the grain in tetraploid and hexaploid wheats.…”