| 棉花叶片自然衰老和病害胁迫时SOD、POD活性与光合特性的变化 |
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| 引用本文： | 邱竟,胡萍,潘学标.棉花叶片自然衰老和病害胁迫时SOD、POD活性与光合特性的变化[J].棉花学报,1992(1). |
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| 作者姓名： | 邱竟 胡萍 潘学标 |
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| 作者单位： | 中国农业科学院棉花研究所，中国农业科学院棉花研究所，中国农业科学院棉花研究所 安阳 455112，安阳 455112，安阳 455112 |
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| 摘 要： | 棉花主茎叶片的超氧物歧化酶(SOD)、过氧化物酶(POD)活性、叶绿素含量及净光合速率等因叶龄不同而变化。主茎下部衰老叶片的SOD、POD活性明显降低、叶绿素含量减少、光合作用功能衰退。同时,棉株受到病害胁迫时,叶片的SOD活性也会明显下降,但是,POD活性则上升。当发病植株恢复正常生长后,棉花叶片的SOD、POD活性仍能恢复正常。
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| 关 键 词： | 棉花叶片 衰老 病害胁迫 SOD POD 净光合速率 |
CHANGES OF SUPEROXIDE DISMUTASE, PEROXIDASE ACTIVITY AND PHOTOSYNTHETIC CHARACTERISTICS DURING SENESCENCE AND DISEASE STRESS IN COTTON LEAVES |
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| Qiu Jing Hu Ping Pan Xuebiao.CHANGES OF SUPEROXIDE DISMUTASE, PEROXIDASE ACTIVITY AND PHOTOSYNTHETIC CHARACTERISTICS DURING SENESCENCE AND DISEASE STRESS IN COTTON LEAVES[J].Cotton Science,1992(1). |
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| Authors: | Qiu Jing Hu Ping Pan Xuebiao |
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| Abstract: | The activity of superoxide dismutase (SOD) and peroxidase (POD), contents of chlorophyll and net photosynthetic rate varied with the age of leaves in cotton stem. SOD and POD activity descended apparently, and chlorophyll contents and photosynthesis declined in senescent leaves of lower stem. While cotton plants were stressed by disease, SOD activity of leaves decreased obviously, but the activity of POD increased. After the diseased plants recovered, the activity of SOD and POD in cotton leaves returned to normal levels again. |
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| Keywords: | cotton leaf senescence disease stress superoxide dismutase peroxidase net photosynthetic rate |
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