tionship Between the Activities of Superoxide Dismutase and Cat in Corn Leaves and Waterlogging Tolerance

doi:10.3321/j.issn:1000-7091.1995.03.007

Abstract

Abstract: The summer corn (Zea mays L.) hybrid Suyu 1 and its two parental inbred, Su 801 (maternal inbred, waterlogging tolerant) and Huangzaosi (paternal inbred, waterlogging intolerant), were used to investigate the relationship between waterlogging resistance and the activity of superoxide dismutase (SOD) arid catalase and malondialdehyde (MDA) contents in leaves. The results showed that the decrease of SOD and ccatlaase activities and increase of MDA contents in Su 80-1 leaves were much less than that in Huangzaosi leaves under waterlogging condition. It is suggested that the difference of waterlogging tolerance between two parental inbred was positively correlated with their ability to resist the toxicity of biological active oxygen.The behavior of SOD and catalase activities and MDA content in Suyu 1 (F1 hybrid) under waterlogging condition was similar to that in Su 80-1 (maternal inbred). But the loss of biomass induced by waterlogging injury was the least in Suyu 1 among three varieties. This is pinly because of the rapid growth in F1 hybrid, so that it can avoid the sensitive stage.

Key words: Corn, Waterlogging tolerance, Superoxide dismutase (SOD), Catalase, Malondialdehyde (MDA) content

CLC Number:

S513.01

Liu Xiaozhong, Li Jiankun, Wang Zhixia, Wang Zongli. tionship Between the Activities of Superoxide Dismutase and Cat in Corn Leaves and Waterlogging Tolerance[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1995, 10(3): 29-32. doi: 10.3321/j.issn:1000-7091.1995.03.007.

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