降雨条件下冬小麦叶片水分利用效率与生理生化特性关系的研究

Investigation on the relationship between leaf water use efficiency and physio-biochemical traits of winter wheat under rained condition.

作者信息

Baodi Dong, Mengyu Liu, Hongbo Shao, Quanqi Li, Lei Shi, Feng Du, Zhengbin Zhang

机构信息

Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shi Jiazhuang 050021, China.

出版信息

Colloids Surf B Biointerfaces. 2008 Apr 1;62(2):280-7. doi: 10.1016/j.colsurfb.2007.10.023. Epub 2007 Nov 13.

DOI:10.1016/j.colsurfb.2007.10.023

PMID:18083352

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 (P(n)), stomatal conductance (g(s)), transpiration rate (T(r)), intercellular concentration of carbon oxide (C(i)), leaf water potential (Psi(w)), 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 rained 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.

摘要

采用不同的统计方法和通径分析，研究了19个小麦基因型的叶片水分利用效率（WUE）与生理生化性状之间的关系，这些生理生化性状包括光合速率（P(n)）、气孔导度（g(s)）、蒸腾速率（T(r)）、细胞间二氧化碳浓度（C(i)）、叶片水势（Ψ(w)）、叶片温度、蜡质含量、叶片相对含水量（RWC）、离体叶片失水速率（RWL）、过氧化物酶（POD）和超氧化物歧化酶（SOD）活性。结果表明，在降雨条件下，光合速率、气孔导度和蒸腾速率是影响叶片水分利用效率的最重要变量。基于五项统计分析结果，合理推测在降雨条件下，通过选择光合速率高、蒸腾速率和气孔导度低的育种材料，可获得高叶片水分利用效率的小麦。