| 姜义宝,杨玉荣,郑秋红.外源一氧化氮对干旱胁迫下苜蓿幼苗抗氧化酶活性和叶绿素荧光特性的影响[J].干旱地区农业研究,2008,(2):65~68 |
| 外源一氧化氮对干旱胁迫下苜蓿幼苗抗氧化酶活性和叶绿素荧光特性的影响 |
| 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 |
| 中文关键词: 一氧化氮 干旱胁迫 苜蓿 抗氧化酶 叶绿素 荧光参数 |
| 英文关键词:nitric oxide(NO) drought stress alfalfa antioxidase chlorophyll fluorescence parameter |
| 基金项目:河南省科技厅重大科技攻关项目(0422010300) |
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| 中文摘要: |
| 外源一氧化氮(NO)处理苜蓿幼苗,进行不同土壤含水量条件的干旱胁迫,探讨外源NO对提高苜蓿幼苗抗旱性的作用,结果表明:0.1 mmol/L硝普钠(SNP)减缓干旱胁迫下苜蓿幼苗细胞膜透性的增加,使过氧化氢酶(CAT)先升后降,超氧化物歧化酶(SOD)和过氧化物酶(POD)活性持续升高,减缓叶绿素含量和叶绿素荧光参数Fv/Fm、Fv/Fo的降低,表明外源NO处理提高了苜蓿的抗旱性。 |
| 英文摘要: |
| 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. |
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