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对两个不同耐涝性的小麦品种华麦 8号和鄂恩 1号在苗期和孕穗期遭受涝渍后的生理变化进行研究 ,结果表明 :叶片叶绿素 ( chl)含量、超氧化物岐化酶 ( SOD)、过氧化氢酶( CAT)活性和根系活力均下降 ,而丙二醛 ( MDA)含量上升 ,变化幅度为耐涝的华麦 8号低于不耐涝的鄂恩 1号 ,差异达显著或极显著水平 ;叶片脯氨酸 ( pro)含量上升 ,但华麦 8号的上升幅度极显著地高于鄂恩 1号 ;两个品种的过氧化物酶 ( POD)活性变化的差异也较大 ,其中华麦8号稳定而缓慢上升 ,而鄂恩 1号则先急剧上升后又逐步下降
Physiological changes of two wheat cultivars Huamai 8 and E’en 1 with different waterlogging tolerance at the seedling and booting stages were studied. The results showed that the content of chlorophyll (chl), superoxide dismutase (SOD), catalase (CAT) activity and root activity decreased, while malondialdehyde (MDA) content increased, the change range of waterlogging tolerant Huamai 8 was lower than that of no waterlogging Eln 1, (P <0.05), and the difference was significant or extremely significant. The content of pro (pro) in leaves increased, but the increase of Hua-mai 8 was significantly higher than that of E-1. The changes of peroxidase (POD) The difference is also larger, of which Chinese wheat 8 steady and slowly rising, while the Een 1 first rose sharply and then gradually declined