| 植物生长调节剂对大豆叶片内源激素含量及保护酶活性的影响 |
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| 引用本文： | 郑殿峰,赵黎明,冯乃杰.植物生长调节剂对大豆叶片内源激素含量及保护酶活性的影响[J].作物学报,2008,34(7):1233-1239. |
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| 作者姓名： | 郑殿峰 赵黎明 冯乃杰 |
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| 作者单位： | 黑龙江八一农垦大学植物科技学院, 黑龙江大庆 163319 |
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| 基金项目： | 国家科技支撑计划项目
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黑龙江省"十一五"科技攻关项
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黑龙江省教育厅项目 |
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| 摘 要： | 在大田栽培条件下, 以大豆(Glycine max)垦农4号为材料, 叶面喷施不同植物生长调节剂, 比较叶片中几种内源激素含量变化的差异, 研究喷药对叶片保护酶活性的调控效应。结果表明, 在喷药后5~30 d, SOD模拟物(SODM)明显提高了IAA、GA以及CTK的含量。喷药后15~30 d, 2-N,N-二乙氨基乙基己酸酯(DTA-6)提高了IAA和CTK的含量, 氯化胆碱(Cc)则在不同程度上降低了IAA和CTK含量。另一方面, 随着喷药后时间的延续, 3种调节剂提高了叶片中的SOD和POD活性。其中以DTA-6对SOD活性作用最强, SODM次之; 而对POD活性则以SODM调节剂的作用最好, DTA-6其次。此外, 调节剂DTA-6和SODM在一定程度上还提高了叶片中的CAT活性, 减缓了MDA含量的升高, 而调节剂Cc则作用不明显。综合分析表明, 叶面喷施DTA-6和SODM, 可调节叶片内源激素水平和保护酶的生理功能, 有效控制叶片的衰老进程, 提高籽粒产量。
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| 关 键 词： | 植物生长调节剂 大豆 内源激素 保护酶活性 |
| 收稿时间： | 2007-12-05 |
| 修稿时间： | 1900-01-01 |
Effects of Plant Growth Regulators (PGRs) on Endogenous Hormone Contents and Activities of Protective Enzymes in Soybean Leaves |
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| ZHENG Dian-Feng,ZHAO Li-Ming,FENG Nai-Jie.Effects of Plant Growth Regulators (PGRs) on Endogenous Hormone Contents and Activities of Protective Enzymes in Soybean Leaves[J].Acta Agronomica Sinica,2008,34(7):1233-1239. |
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| Authors: | ZHENG Dian-Feng ZHAO Li-Ming FENG Nai-Jie |
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| Affiliation: | College of Plant Science, Heilongjiang August First Land Reclamation University, Daqing 163319, Heilongjiang, China |
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| Abstract: | The leaf senescence is one of the main problems at filling stage in soybean grain, affecting leaf photosynthetic physiology. Previous researches have showed that chemical growth regulators have been used to delay leaf senescence, therefore, to raise grain yield. In the present study, a soybean (Glycine max) cultivar, ‘Kennong4’ with three treatments by spraying SOD simulation material (SODM), Choline chloride (Cc) and Diethyl aminoethyl hexanoate (DTA-6) were employed to compare differences of several endogenous hormones and protective enzyme activities in soybean leaves in a field experiment. The results show that, compared with CK, 7–15% of yield increases were obtained with SODM and DTA-6 treatments. IAA, GA, and CTK contents significantly increased with SODM treatment from the 5th to the 30th day after spraying. DTA-6 improved the contents of IAA and CTK from the 15th to the 30th day after spraying, however, the contents of IAA and CTK reduced with Cc treatment in varying degrees. On the other hand, with the time elongation after spraying PGRs, three regulators increased SOD and POD ac-tivities in soybean leaves. SOD activity in leaves with DTA-6 spraying was higher than that with SODM spraying, although POD activity in leaves with DTA-6 spraying was lower than that with SODM spraying. In addition, SODM and DTA-6 also enhanced CAT activity in soybean leaves and slowed the increase of MDA. But the effect of Cc was not obvious. The results above indi-cated that it is effective to increase seed yield or delay leaf senescence, and regulate the level of endogenous hormones and physiological function of protective enzymes by spraying SODM and DTA-6 on soybean leaves. |
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| Keywords: | Plant growth regulator Soybean Endogenous hormone Protective enzyme activity |
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