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水分胁迫下，３个测试的玉米杂交种（玉单３５８，南校８号，桂三２号）幼苗叶片束缚水含量（ＢＷＣ）有所提高，以玉单３５８的ＢＷＣ升幅最高。自由水含量（ＦＷＣ），总含水量ｔＴＷＣ）和叶片相对含水量（ＲＷＣ）均有所下降．下降水平为南校８号＞桂三２号＞玉单３５８。叶片可溶性糖和游离脯氨酸含量增长水平为玉单３５８＞桂三２号＞南校８号．膜脂过氧化产物丙二醛（ＭＤＡ）增加幅度和质膜相对透性大小为南校８号＞桂三２号＞玉单３５８．超氧物歧化酶（ＳＯＤ）、过氧化物酶（ＰＯＤ）和过氧化氢酶（ＣＡＴ）等保护酶活性则为：玉单３５８＞桂三２号＞南校８号。上述结果表明，花粉植株杂交种玉单３５８的抗水分胁迫能力比桂三２号和南校８号强．
Under water stress, the BWC increased in the three tested maize hybrids (Yudan 358, Nanxiao 8 and Guisan 2) and the BWC increase was the highest in Yudan 358. Free water content (FWC), total water content (tTWC) and leaf relative water content (RWC) decreased. Decline level of South School No. 8> Gui San 2> Yudan 358. Leaf soluble sugar content and free proline content increased level of Yudan 358> Gui San 2> South school on the 8th. Membrane lipid peroxidation products malondialdehyde (MDA) increase and the relative permeability of the plasma membrane size of South School 8> Gui San 2> Yudan 358. The activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) and other protective enzymes were as follows: Yudan 358> Guisan 2> South School 8. The above results showed that the resistance to water stress of pollen plant hybrid Yudan 358 was stronger than that of Guansan 2 and No.