水稻化感作用的生理生化特性研究
Studies on allelopathic physiobiochemical characteristics of rice
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摘要: 用化感水稻叶片浸提液处理不同萌发阶段的稗草幼苗，8d后测定受体稗草体内各种酶的活性结果表明，对地上部超氧化物歧化酶(SOD)活性的最大抑制效应达27.7%，对地下部的最大抑制效应达38.4%；对地上部过氧化氢酶活性(CAT)的最大抑制效应达56.4%，对地下部的最大抑制效应达62.4%。经分析，水稻的化感作用具有破坏受体植物膜的功能、影响其生长调节系统和破坏其光合作用等生理生化特性。Abstract: The activities of enzymes in barnyardgrass treated with the diluted extracts of rice accessions were determined during the weed seed germinating courses. the highest inhibitory effect on activity of SOD in shoot was 27.7%,and in root was 38.4%;the highest inhibitory effect on activity of CAT in shoot was 56.4%,and in root was 62.4%.It indicated that rice allelopathy had some physiobiochemical characteristics such as deteriorating the weed plant membrane,affecting the growth and photosynthesis of receiver plant and so on.
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Key words:
- Rice /
- Allelopathy /
- Physiobiochemical characteristics /
- Activities of enzyme
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