安徽农业科学2017，Vol.45Issue(5)：8-9,13,3.
低温胁迫对水稻幼苗叶片生理生化特性的影响
Effects of Low-temperature Stress on the Physiological and Biochemical Characteristics of Rice Seedling Leaves
摘要
Abstract
[Objective] To study the effects of low-temperature stress on the physiological and biochemical characteristics of rice seedling leaves.[Method] Taking rice cultivar Hangyou 5916 as test materials,the changes of photosynthesis parameters,chlorophyll fluorescence parameters,enzyme activities of antioxidant system and MDA content in the process of low-temperature stress were studied.[Result] Under lowtemperature stress,the net photosynthesis rate,stomatal conductance and transpiration rate obviously decreased,and chlorophyll fluorescence parameters Fv/Fm,φpsⅡ obviously decreased,but Fo and φNO increased.The determination results of the activities of SOD,POD and CAT enzymes firstly increased and then decreased,MDA content gradually increased.[Conclusion] Under low-temperature stress,photochemical conversion efficiency decreased,the net photosynthesis rate decreased by the decrease of stomatal conductance and transpiration rate.PSⅡ was damaged because enzymes activities of antioxidant system decreased and MDA content increased.关键词
水稻/低温冷害/光合作用/叶绿素荧光参数/抗氧化系统Key words
Rice/Cold damage/Photosynthesis/Chlorophyll fluorescence parameters/Antioxidant system分类
农业科技引用本文复制引用
王亚男,范思静..低温胁迫对水稻幼苗叶片生理生化特性的影响[J].安徽农业科学,2017,45(5):8-9,13,3.基金项目
安徽省科技攻关计划项目(1501031111). （1501031111）
