【作者】 史金丽； 王立刚； 刘景辉； 邱建军；

【Author】 SHI Jin-li~1 WANG Li-gang~1 LIU Jing-hui~2 QIU Jian-jun~1 (1.Institute of Agricultural Resources and Regional Planning,CAAS,Beijing 100081,China; 2.Inner Mongolia Agriculture Uniuersity,Huhehaote 010019,China)

【机构】 中国农业科学院农业资源与农业区划研究所； 内蒙古农业大学；

【摘要】 在5个水分处理下(田间持水量的30％、45％、60％、75％、90％),研究燕麦各生育时期的保护酶活性和叶绿素含量的变化及其与产量间的相关性。结果表明：随着水分胁迫程度的增加,保护酶(SOD、POD、CAT)活性均有先增加后降低的趋势；总叶绿素含量随着胁迫程度的增加呈双峰曲线变化趋势。开花期和拔节期水分亏缺对产量影响较大；这两个时期的 SOD、CAT 与产量之间相关性比较显著；所以此时应加强水分管理,从而实现经济效益最优化。更多还原

【Abstract】 This paper aim at studying the changes of protective enzymes activities and chlorophyll content of oat and the correlation with yield during different growth stages.Five water levels were designed by field water capacity:30%(severe water stress),45%(moderate water stress),60%(light water stress),75%(well-wa- tered),90%(full water supply).The results indicated that:the activities of protective enzymes(SOD,POD, CAT)were lower after the first increase in the trend;the total chlorophyll content presented bimodal curve trend.Water stress had greater impact on yield especially during anthesis and shooting stage;the correlation of SOD and CAT with yield was obvious at the two stages,so we should strength the water management for better economic benefits.更多还原