| Effects of High Temperature on Antioxidant Enzymes and Lipid Peroxidation in Flag Leaves of Wheat During Grain Filling Period |
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| 作者姓名： | LIU Ping GUO Wen-shan PU Han-chun FENG Chao-nian ZHU Xin-kai PENG Yong-xin |
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| 作者单位： | Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology/Wheat Research Institute, Yangzhou University, Yangzhou 225009P,R.China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | On the basis of the phytotron, the effects of high temperature （daily average temperature 25, 30, 35 and 40℃, respectively） on antioxidant enzymes and lipid peroxidation in flag leaves of wheat at 50% relative air moisture during grain fastest filling stage 19-21 days after anthesis （DAA）] were studied. The wheat cultivars tested were Yangmai 9 with weak-gluten and Yangmai 12 with medium-gluten. Compared with 25℃, the higher the temperature was, the higher was the MDA content in flag leaves, while lower were the SOD, POD, and CAT activities. SOD and CAT activities in Yangmai 12 appeared to be more sensitive to high temperature than that in Yangmai 9. But POD activity in Yangmai 12 was less sensitive to high temperature. MDA content in Yangmai 12 was higher than that in Yangmai 9. The 1000-grain weight declined with increase in temperature.
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| 关 键 词： | 小麦 高温条件 品种资源 抗氧化剂 |
Effects of High Temperature on Antioxidant Enzymes and Lipid Peroxidation in Flag Leaves of Wheat During Grain Filling Period |
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| LIU Ping GUO Wen-shan PU Han-chun FENG Chao-nian ZHU Xin-kai PENG Yong-xin.Effects of High Temperature on Antioxidant Enzymes and Lipid Peroxidation in Flag Leaves of Wheat During Grain Filling Period[J].Agricultural Sciences in China,2006,5(6):425-430. |
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| Authors: | LIU Ping GUO Wen-shan PU Han-chun FENG Chao-nian ZHU Xin-kai PENG Yong-xin |
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| Institution: | Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology/Wheat Research Institute, Yangzhou University, Yangzhou 225009, P.R. China |
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| Abstract: | On the basis of the phytotron, the effects of high temperature (daily average temperature 25, 30, 35 and 40°C, respectively) on antioxidant enzymes and lipid peroxidation in flag leaves of wheat at 50% relative air moisture during grain fastest filling stage 19–21 days after anthesis (DAA)] were studied. The wheat cultivars tested were Yangmai 9 with weak-gluten and Yangmai 12 with medium-gluten. Compared with 25°C, the higher the temperature was, the higher was the MDA content in flag leaves, while lower were the SOD, POD, and CAT activities. SOD and CAT activities in Yangmai 12 appeared to be more sensitive to high temperature than that in Yangmai 9. But POD activity in Yangmai 12 was less sensitive to high temperature. MDA content in Yangmai 12 was higher than that in Yangmai 9. The 1000-grain weight declined with increase in temperature. |
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| Keywords: | wheat high temperature grain filling period antioxidant enzymes lipid peroxidation flag leaves |
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