| 灌浆期干旱对小麦旗叶衰老和籽粒产量的影响 |
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| 引用本文： | 史国安,郭香凤,刘素云,陈明灿,付国占,李友军.灌浆期干旱对小麦旗叶衰老和籽粒产量的影响[J].西北农业学报,1999,8(2):26-29. |
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| 作者姓名： | 史国安 郭香凤 刘素云 陈明灿 付国占 李友军 |
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| 作者单位： | 洛阳农业高等专科学校, 洛阳 471003;洛阳农业高等专科学校, 洛阳 471003;洛阳农业高等专科学校, 洛阳 471003;洛阳农业高等专科学校, 洛阳 471003;洛阳农业高等专科学校, 洛阳 471003;洛阳农业高等专科学校, 洛阳 471003 |
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| 摘 要： | 在高肥条件下，研究灌浆期干旱对两个抗旱性不同的旱地小麦品种旗叶衰老和籽粒产量的影响。结果表明，豫麦２号抗旱系数为０．９０麦现为旗叶叶绿素下降快，ＭＤＡ增加快，活性氧代谢失调出现的早；
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| 关 键 词： | 小麦 叶片衰老 自由基代谢 籽粒产量 灌浆期干旱 |
| 收稿时间： | 1997/12/19 0:00:00 |
| 修稿时间： | 1998/8/22 0:00:00 |
Effect of Water Stress on Flag Leaves Senescence and Grain Yield of Winter Wheat in Grain Filling Stage |
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| SHI Guoan,GUO Xiangfeng,LIU Suyun,CHEN Mingcan,FU Guozhan and LI Youjun.Effect of Water Stress on Flag Leaves Senescence and Grain Yield of Winter Wheat in Grain Filling Stage[J].Acta Agriculturae Boreali-occidentalis Sinica,1999,8(2):26-29. |
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| Authors: | SHI Guoan GUO Xiangfeng LIU Suyun CHEN Mingcan FU Guozhan and LI Youjun |
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| Institution: | Luoyang Agricultural College, Luoyang 471003;Luoyang Agricultural College, Luoyang 471003;Luoyang Agricultural College, Luoyang 471003;Luoyang Agricultural College, Luoyang 471003;Luoyang Agricultural College, Luoyang 471003;Luoyang Agricultural College, Luoyang 471003 |
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| Abstract: | The effects of water stress on flag leaves senescence and grain yield of two different drought-resistant varieties of winter wheat(Zhenghan No.1 and Yumei No.2)were studied under high fertilizer field conditions.The results showed that drought coefficient of Yumei No.2 and Zhenghan No.1 were 0.90 and 0.97,respectively.In the grainfilling stage,the chlorophyll degradation and MDA accumulation in Yumei No.2 were faster than in Zhenghan No.1 under water stress,which means the degree of lipid peroxidation in zhenghan No.1 was lower than in Yumei No.2.The rate of O2·- producing and content of H2O2 increasing rapidly in later-filling stage caused early-senescence of wheat flag leaves under water stress.The decline of grain weight in Yumei No.2 was grater than that in Zhenghan No.1. |
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| Keywords: | Senescence of wheat leaf Free radical metabolism Grain yield Water stress in grain filling stage |
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