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Investigation on the relationship between leaf water use efficiency and physio-biochemical traits of winter wheat under rained condition |
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| Authors: | Baodi Dong Mengyu Liu Hongbo Shao Quanqi Li Lei Shi Feng Du Zhengbin Zhang |
| Institution: | aCenter for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shi Jiazhuang 050021, China bState Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100, China cInstitute of Life Sciences, Qingdao University of Science & Technology, Qingdao 266042, China dGraduate University, Chinese Academy of Sciences, Beijing100049, China eInstitute of Urban Environment, Chinese Academy of Sciences, Xiamen 361003, China |
| Abstract: | Different statistical methods and path analysis were used to study the relationship between leaf water use efficiency (WUE) and physio-biochemical traits for 19 wheat genotypes, including photosynthesis rate (Pn), stomatal conductance (gs), transpiration rate (Tr), intercellular concentration of carbon oxide (Ci), leaf water potential (Ψw), leaf temperature, wax content, leaf relative water content (RWC), rate of water loss from excised-leaf (RWL), peroxidase (POD) and superoxide dismutase (SOD) activities. The results showed that photosynthesis rate, stomatal conductance and transpiration rate were the most important leaf WUE variables under rainfed conditions. Based on the results of five statistical analyses, it is reasonable to assume that high leaf WUE wheat under the rained could be obtained by selecting breeding materials with high photosynthesis rate, low transpiration rate and stomatal conductance. |
| Keywords: | Wheat genotype Membrane interface Leaf water use efficiency Physio-biochemical index Path analysis |
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