Comparisons of WUE in twelve genotypes of winter wheat and the relationship between delta C-13 and WUE

文献类型： 外文期刊

第一作者： Huang, Guirong

作者： Huang, Guirong;Zhang, Xinying;Wang, Yajing;Feng, Fu;Mei, Xurong;Zhong, Xiuli

作者机构：

关键词： Water use efficiency; Grain yield; Stable carbon isotope composition; Winter wheat genotypes; Grain filling stage

期刊名称：PEERJ （ 影响因子：2.984； 五年影响因子：3.369 ）

ISSN： 2167-8359

年卷期： 2019 年 7 卷

页码：

收录情况： SCI

摘要： Twelve winter wheat (Triticum aestivum) genotypes were examined for differences in grain yield, water use efficiency (WUE), and stable carbon isotope composition (delta 13C) in flag leaves. The plants were subjected to rain-fed treatment and supplemental irrigation at the jointing and anthesis stages, during the 2015-2016 and 2016-2017 winter wheat growing seasons. The relationships between delta 13C with grain yield and WUE were analyzed under two different water environments. The results indicated that there were significant differences in delta 13C, grain yield, and WUE among wheat genotypes both under rain-fed and supplemental irrigation conditions. The delta 13C values increased with grain-filling proceeding, the delta 13C being lower under supplemental irrigation treatment than that under rain-fed treatment. The relationships between the average of delta 13C with grain yield and WUE were significantly positive during three measurement periods (R2 = 0.5785 - 0.8258), whether under rain-fed or irrigation environments. This suggests that delta 13C might be associated with the grain yield and WUE in winter wheat under rain-fed and supplemental irrigation conditions in the climate region of the northwest Huang-Huai-Hai Plain of China.

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