| 除草剂对小麦光合特性及叶绿素荧光参数的影响 |
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| 引用本文： | 王正贵,周立云,郭文善,朱新开,李春燕,彭永欣,封超年. 除草剂对小麦光合特性及叶绿素荧光参数的影响[J]. 农业环境科学学报, 2011, 30(6) |
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| 作者姓名： | 王正贵 周立云 郭文善 朱新开 李春燕 彭永欣 封超年 |
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| 作者单位： | 扬州大学江苏省作物遗传生理重点实验室农业部长江中下游作物生理生态与栽培重点开放实验室,江苏扬州,225009 |
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| 基金项目： | 江苏省“六大人才高峰”项目(07-G-008); 国家自然科学基金项目(30671224,30971729); 江苏省农业支撑计划项目(BE2008366-1,BE2009426); 江苏省高校自然科学重大基(07KJAZ1022) |
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| 摘 要： | 为了探讨除草剂对小麦叶片气体交换及叶绿素荧光参数的影响,在大田条件下以弱筋小麦扬麦13、强筋小麦烟农19两种冬小麦为材料,研究了苯磺隆、使它隆、异丙隆、骠马、绿麦隆5种除草剂对其光合特性的影响。结果表明,供试5种除草剂处理后,小麦叶片内光合色素含量显著降低,净光合速率(Pn)、蒸腾速率(Tr)及气孔导度(Gs)也均不同程度降低,说明除草剂显著影响了小麦的光合特性,且表现出一定的剂量-效应关系。叶绿素荧光分析表明,除草剂显著降低了原初光能转换效率(Fv/Fm)、PSⅡ的实际光化学效率(Ф)及光化学荧光淬灭系数(qP),非光化学淬灭(qN)则呈一定的上升趋势。表明在除草剂胁迫下小麦叶片发生了光抑制,PSⅡ复合体受到损伤伴随着光合电子传递受阻。小麦叶片自身具有一定的光合保护机制,用以减轻或消除除草剂胁迫。
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| 关 键 词： | 除草剂 气体交换参数 叶绿素荧光参数 小麦 |
Effects of Herbicides on Photosynthesis and Chlorophyll Fluorescence Parameters in Wheat Leaves |
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| WANG Zheng-gui,ZHOU Li-yun,GUO Wen-shan,ZHU Xin-kai,LI Chun-yan,PENG Yong-xin,FENG Chao-nian. Effects of Herbicides on Photosynthesis and Chlorophyll Fluorescence Parameters in Wheat Leaves[J]. Journal of Agro-Environment Science( J. Agro-Environ. Sci.), 2011, 30(6) |
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| Authors: | WANG Zheng-gui ZHOU Li-yun GUO Wen-shan ZHU Xin-kai LI Chun-yan PENG Yong-xin FENG Chao-nian |
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| Affiliation: | WANG Zheng-gui,ZHOU Li-yun,GUO Wen-shan,ZHU Xin-kai,LI Chun-yan,PENG Yong-xin,FENG Chao-nian* (Key Laboratory of Crop Genetics and Physiology of Jiangsu Province,Key Laboratory of Crop Physiology,Ecology and Cultivation in Middle and Lower Reaches of Yangtse River of Ministry of Agriculture,Yangzhou University,Yangzhou 225009,China) |
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| Abstract: | Effects of five kinds of herbicides(i.e. tribenuron-methyl, fluroxypyr, isoproturon, puma super, chlorotoluron) on photosynthetic characteristics and chlorophyll fluorescence parameters in 2 winter wheat cultivars(weak-gluten wheat Yangmai 13,strong gluten wheat Yannong 19) were studied under field conditions. The results showed that all of tested herbicides caused the decline of photosynthetic pigment content in leaves of 2 wheat varieties. Photosynthetic rate(Pn), transpiration rate(Tr) and stomatal condu... |
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| Keywords: | herbicide gas exchange parameters chlorophyll fluorescence parameters wheat |
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