喷施乙烯利提高玉米幼苗抗旱机理研究  

Study on Mechanism for CEPA Improving Drought Resistance of Maize Seedlings

作　　者：张骁[1,2] 王玲[1,2] 高俊风[1,2] 宋纯鹏[1,2] 李锦辉[1,2] 

机构地区：[1]河南大学 [2]西北农业大学

出　　处：《灌溉排水》1999年第1期39-41,共3页Irrigation and Drainage

基　　金：国家自然科学基金;国家教委留学回国人员科研启动基金

摘　　要：以室内盆栽玉米幼苗为材料，研究４００ｍｇ／Ｌ乙烯利（ＣＥＰＡ）提高玉米幼苗抗旱的机理。结果表明：干旱条件下，ＣＥＰＡ能显著提高玉米幼叶相对含水量（ＲＷＣ），增强其渗透调节能力（ＯＡ），并在一定程度上降低其膜相对透性（ＲＰ）。随干旱时间的延长，玉米幼叶的净光合速率（Ｐｎ）和气孔导度（Ｇｓ）皆下降，尤其在严重胁迫下。This Research was carried out to study the mechanism of CEPA of 400 mg/L in improving drought resistance of maize seedlings. The seedlings are cultivated indoor. Results shows that CEPA raise relative water content and osmotic adjustment of the maize seedlings, and lower membrance relative permeability significantly. During the duration of drought, net photosynthetic rate and stomatal conductance of maize leaves drop gradually. Under severe water stress, CEPA has positive effect in maintaining net photosynthetic rate.

关 键 词：乙烯剂 玉米 抗旱机理 

分 类 号：S513[农业科学—作物学]