THE RELATION BETWEEN YIELD AND PROTEIN IN CEREAL GRAIN
THE RELATION BETWEEN YIELD AND PROTEIN IN CEREAL GRAIN
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DOI：
10.1002/jsfa.2740670306
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发表时间：
1995-03-01
影响因子：
4.1
通讯作者：
SIMMONDS, NW
中科院分区：
文献类型：
--
作者：
SIMMONDS, NW
An analysis of published data on genetic relations between dry grain yields y, t ha(-1)) and protein content [p, protein as a fraction (g g(-1)) of dry grain] of cereals is presented. In all, 106 usable regressions of y on p across geneotypes were assembled. The long-recognised negative relation between yield and protein concentration was fully substantiated. There is a strong positive relation between grain yield and protein yield. The linear regression coefficient of yield on protein concentration is related to yield, with slope about -15. This relation holds approximately over all cereals. The data can be used to estimate a characteristic parameter described by C = dy/d(yp) = similar to 15-25 at the mean of each experiment. The relationship is surprisingly consistent but no simple physiological interpretation is available. In discussion, the high C, the impact of strong negative regressions of y on p for breeding strategies, the fact that protein yield increases with gross grain yield but at falling p and certain socio-economic consequences are emphasized. An acute need for orderly reporting of experimental data is also emphasised; the existing literature is chaotic as to units, moisture contents and conversion factors.
