| 不同外源激素对二晚后期叶片衰老的影响 |
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| 引用本文： | 张文学,彭春瑞,孙刚,张福群,胡水秀.不同外源激素对二晚后期叶片衰老的影响[J].江西农业学报,2007,19(2):11-13. |
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| 作者姓名： | 张文学 彭春瑞 孙刚 张福群 胡水秀 |
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| 作者单位： | 1. 江西农业大学,农学院,江西,南昌,330045
2. 江西省农业科学院,土壤肥料与资源环境研究所,江西,南昌,330200 |
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| 基金项目： | 科技部粮食丰产工程项目江西分项资助项目 |
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| 摘 要： | 采用田间小区试验研究了齐穗期喷施3种外源激素(GA3、6-BA、BR)对二晚生长后期叶片衰老的影响,测定了剑叶的膜透性、丙二醛(MDA)含量与SOD、CAT活性等与衰老相关的指标。结果表明:3种外源激素对水稻叶片的衰老都有延缓作用,并能提高结实率,最终达到增加产量的目的,其中以6-BA的效果最好。但外源激素对水稻叶片衰老作用的延缓具有时效性,大约2周左右。
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| 关 键 词： | 外源激素 赤霉素(GA3) 6-苄基腺嘌啉(6-BA) 芸苔素(BR) 水稻 叶片 早衰 |
| 文章编号： | 1001-8581（2007）02-0011-03 |
| 收稿时间： | 2006-11-05 |
| 修稿时间： | 2006-11-05 |
Effect of Different External Phytohormones on Leaves Senescence in Late Growth Period of Late-season Rice |
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| ZHANG Wen-xue,PENG Chun-rui,SUN Gang,ZHANG Fu-qun,HU Shui-xiu.Effect of Different External Phytohormones on Leaves Senescence in Late Growth Period of Late-season Rice[J].Acta Agriculturae Jiangxi,2007,19(2):11-13. |
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| Authors: | ZHANG Wen-xue PENG Chun-rui SUN Gang ZHANG Fu-qun HU Shui-xiu |
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| Abstract: | Field plot experiment was conducted to study the effect of spraying three kinds of external phytohormones(gibberellin3,6-benzyladenien and brassinolide) on the leaves senescence in the late growth period of the late-season rice.Some senescence indexes including the plasma membrane permeability,content of MDA,activities of SOD and CAT were determined.The results showed as follows: all kinds of external phytohormones could delay leaves senescence,increase the seed setting rate,and increase the yield,in which 6-BA did best.However,the effect of external phytohormones on delaying leaves senescence had the time limitation and the time of efficacy was about two weeks. |
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| Keywords: | External phytohormone Gibberellin(GA3) 6-benzyladenien(6-BA) Brassinolide(BR) Rice Leaf Early-senescence |
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