Relationships between carbon isotope discrimination and leaf morphophysiological traits in spring-planted spring wheat under drought and salinity stress in Northern China
文献类型： 外文期刊
作者： Zhu, Lin 1 ; Liang, Zong Suo 1 ; Xu, Xing 2 ; Li, Shu Hua 3 ; Jing, Ji Hai 4 ; Monneveux, P. 5 ;
作者机构： 1.NW A&F Univ, Coll Life Sci, Yangling 712100, Peoples R China
2.Ningxia Univ, Yinchuan 750021, Peoples R China
3.Ningxia Acad Agr & Forestry Sci, Ningxia Key Lab Agrobiotechnol, Yinchuan 75002, Peoples R China
4.Ningxia Guyuan Inst Agr Sci, Guyuan 756000, Peoples R China
5.SupAgro Montpellier, F-34060 Montpellier, France
关键词： genotype;drought stress;harvest index;salinity stress;gas exchange parameter;morphophysiological trait;rain- fed condition
期刊名称：AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH （ 影响因子：1.328； 五年影响因子：1.781 ）
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收录情况： SCI
摘要： The relationships between carbon isotope discrimination (Delta) and some morphophysiological traits such as specific leaf dry weight (SLDW), gas exchange parameters, and relative water content (RWC) were studied in a collection of 20 bread wheat cultivars (landraces, released cultivars and advanced lines) in three locations of the Ningxia region (North-East China), i.e. Yinchuan (limited irrigation conditions), Huinong (limited irrigation conditions + salinity) and Guyuan (rain-fed conditions). Relationships between Delta, grain yield (GY), and harvest index (HI) and above-ground biomass (AGB) were also analysed. Differences in the measured traits between different locations were highly related to the variation in water availability. Positive correlations were noted between Delta and HI and grain yield. Flag leaf Delta was positively correlated with RWC at anthesis, and negatively associated with SLDW at grain filling. Significant and negative correlations between Delta and dry matter weight per plant at anthesis and biomass at maturity were noted. Leaf temperature (LT) was found to be negatively correlated with Delta and g(s). The findings suggest that Delta may be a useful indicator reflecting wheat yield, harvest index, and water status under irrigation and rain-fed conditions in the Ningxia region.
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