摘要
以5个西瓜品种(系)为材料,研究低温(10℃)和弱光[200μmol·(m2·s)-1]对幼苗有关生理特性的影响。结果表明:各品种(系)的冷害指数、叶片主脉结构伤害程度、膜透性、MDA含量均随胁迫时间的延长而增加,光合速率随胁迫时间的延长而下降,而叶片SOD活性、CAT活性、SPAD值随着胁迫时间的延长先增加而后降低。综合评价各项生理指标,5个西瓜品种(系)耐低温弱光性由强到弱依次为鉴20、59046、扬9808、早春红玉、8424。
In order to provide a reference for selecting reasonable species with cold and weak light tolerance,five watermelon varieties were chosen to investigate correlative physiological parameters under low temperature（10 ℃） and weak light [200 μmol·（m2·s）-1] stress.The results were as followings：With the stress days prolonging,the chilling injury index,the degree of injured nervation,electrolyte leakage and MDA contents of leaf increased,net photosynthesis rate decreased,and the activities of SOD,CAT and SPAD values rose at earlier stages and then decreased at the later stages.According to comprehensive physiology indexes,the tolerance to chilling and weak light of five watermelon varieties ranked as Jian 20〉59046〉Yang9808〉Zaochunhongyu〉8424.
出处
《扬州大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2012年第2期78-82,94,共6页
Journal of Yangzhou University：Agricultural and Life Science Edition
基金
江苏省科技支撑计划项目(BE2011311)
关键词
西瓜
低温弱光
生理特性
综合评价
watermelon
low temperature and weak light
physiological characteristics
comprehensive evaluation
作者简介
作者简介：李爱民（1975-），男，江苏里下河地区农业科学研究所副研究员，主要从事蔬菜育种和栽培研究。
联系作者，E—mail：feixiong@yzu．edu．cn
