Relationship between Carbon Isotope Discrimination and Mineral Content in Wheat Grown under Three Different Water Regimes

文献类型： 外文期刊

第一作者： Xu, X.

作者： Xu, X.;Zhu, L.;Liang, Z. S.;Zhu, L.;Li, S. H.

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期刊名称：JOURNAL OF AGRONOMY AND CROP SCIENCE （ 影响因子：3.473； 五年影响因子：4.395 ）

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收录情况： SCI

摘要： Carbon isotope discrimination () has been proposed as an indirect selection criterion for transpiration efficiency and grain yield in wheat. However, because of the high cost for analysis, attempts have been carried out to identify alternative screening criteria. Ash content (ma) has been proposed as an alternative criterion for in wheat and barley. A pot experiment was conducted to analyse the relationship between and ma in flag leaf and grain. Plants of 10 genotypes were cultivated under three different water regimes corresponding to moderate, intermediate and severe drought stress obtained by maintaining soil humidity at 75 %, 55 % and 45 % of the humidity at field capacity, respectively. and ma in flag leaf and grain showed significant differences between the moderate, intermediate and severe drought stress levels. Significant correlations were found among genotypes for and ma in flag leaf under severe drought stress, and for and ma in grain under intermediate and moderate drought stress. In flag leaf at anthesis, was negatively associated to K content and positively to Mg content. At maturity, in grain was negatively correlated with Mg and Ca contents in flag leaf and grain, respectively. These results suggested that these traits may be potentially useful traits, which could be surrogates for .

分类号： S344

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