| Effects of exogenous nitric oxide on antioxidase and chlorophyll fluorescence of seedling of alfalfa under drought stress |
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| DOI：10.7606/j.issn.1000-7601.2008.02.13 |
| Key Words: nitric oxide(NO) drought stress alfalfa antioxidase chlorophyll fluorescence parameter |
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| Abstract: |
| This experiment investigated the effects of nitric oxide(NO) on alfalfa seedling under drought stress.The results showed that 0.1 mmol/L sodium nitroprusside(SNP) treatment could alleviate the rise of alfalfa seedling membrane permeability;the activity of catalase(CAT) enhanced first and declined then.SNP treatment could enhance the activity of superoxide dismutase(SOD) and peroxydase(POD),and decline of chlorophyll content and chlorophyll fluorescence parameter Fv/Fm and Fv/Fo of alfalfa seedling.These results indicated exogenous NO may improve the alfalfa seedling drought resistance. |