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不同植物生长调节剂对大豆叶片保护酶活性及同化物代谢的影响

DOI: 10.7668/hbnxb.2008.03.026, PP. 106-111

Keywords: 植物生长调节剂,大豆,保护酶,同化物代谢

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Abstract:

在叶面喷施植物生长调节剂的情况下,比较了大豆叶片中保护酶活性的差异,研究了喷药后对叶片同化物代谢的调控效应,为大豆鼓粒(R5)后期抗衰老和生理代谢功能的提高提供参考。试验于2006年在大田条件下进行,为了避免遗传因子的影响,本研究只选择垦农4号品种为材料,研究对其喷药后叶片内保护酶活性和同化物代谢的变化情况。结果表明:随着喷药时间的延续,SOD模拟物(SODM)、氯化胆碱(Cc)和2-N,N-二乙氨基乙基己酸酯(DTA-6)提高了叶片中的SOD和POD活性。其中SOD活性以DTA-6为最高,SODM次之;POD活性则以SODM调节剂的为最高,调节剂Cc次之。此外,DTA-6和SODM在一定程度上还提高了叶片中的CAT活性、可溶性蛋白质、可溶性糖、硝态氮以及游离氨基酸含量,减缓了MDA含量的升高,而调节剂Cc则表现不明显。综合分析表明,叶面喷施DTA-6和SODM,维持了叶片保护酶和同化物的正常生理代谢功能,有效的提高了叶片抗氧化能力和控制了叶片的衰老进程。

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