水分胁迫对玉米大喇叭口期生长的影响  

Effect of water stress on growth of maize in the bell-mouthed period

作　　者：袁佐清[1] 张建勇[1] 

机构地区：[1]山东理工大学生命科学学院,山东淄博255049

出　　处：《干旱地区农业研究》2007年第4期235-237,242,共4页Agricultural Research in the Arid Areas

摘　　要：以抗旱性不同的玉米自交系为材料,研究了大喇叭口期水分胁迫对其生长的影响及生理指标的变化与抗旱性的关系。结果表明:玉米大喇叭口期不仅是对肥水条件敏感的时期,也是抗旱性鉴定的关键时期;玉米叶片鲜干比、地上部鲜干比、相对含水量、相对电导率、蒸腾速率、气孔导度、磷酸盐的吸收量与玉米抗旱性都有明显的相关性,可作为玉米抗旱性的鉴定指标。In this study, the physiological characters and phosphate assimilations of maize inbred lines with different drought resistance were studied under water stress. The results showed that it is an important growth period in the bell-mouthed period of maize, there were obvious-relation between changes of fresh/dry of weight of leaves, relative water content, relative electricity conductance ratio, the transpiration rate, Somatal water conservancy, phosphate assimilations and drought resistance. They could be used as appraisal indexes of drought resistance of maize in the bell-mouthed period.

关 键 词：玉米 水分胁迫 生理指标 

分 类 号：S513.01[农业科学—作物学]