| 镉胁迫对一年生黑麦草生理生化特性的影响 |
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| 引用本文： | 张凯凯,孙圆圆,徐玲玲,冯旭东,关萍.镉胁迫对一年生黑麦草生理生化特性的影响[J].贵州大学学报(农业与生物科学版),2016(1):86-89. |
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| 作者姓名： | 张凯凯 孙圆圆 徐玲玲 冯旭东 关萍 |
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| 作者单位： | 贵州大学 生命科学学院,贵州 贵阳,550025 |
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| 基金项目： | 贵州省社会发展攻关课题“镉富集植物的筛选及修复技术研究”[黔科合SY自(2013)3137号]。 |
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| 摘 要： | 通过盆栽试验,研究不同浓度镉(0、50、100、200、300 mg/kg)胁迫对一年生黑麦草(Tagetes patula L.)成年植株叶绿素和丙二醛(MDA)含量及抗氧化酶(SOD、CAT、POD)活性的影响。结果表明:低浓度镉(50mg/kg)胁迫叶绿素含量略有减少,但随着胁迫浓度的升高,叶绿素含量与对照显著减少;MDA含量随着镉胁迫浓度增加呈现先降后升的变化趋势,300mg/kg时达到最高值;SOD、CAT、POD活性随镉浓度升高,均表现出先升后降的变化趋势。可见,一年生黑麦草对重金属镉具有一定的耐受性,为植物重金属修复方面提供参考。
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| 关 键 词： | 镉 一年生黑麦草 叶绿素 MDA 抗氧化酶 |
Effects of cadmium stress on physiological and biochemical characteristics in Tagetespatula L. [ Asterales:Aster-aceae] |
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| Abstract: | The effect of different concentrations of cadmium ( Cd) ( 0, 50, 100, 200, 300 mg/kg) on the contents of chlorophyll and MDA and the activity of the antioxidant enzymes ( SOD, CAT and POD ) of the mature plant of Tagetespatula was studied through pot experiment. The results showed that the content of chlorophyll only slightly de﹣creased at low concentration ( 50mg/kg) of Cd, however, with the concentration of Cd increasing, the content of chloro﹣phyll significantly decreased.The content of MDA first decreased then increased to the maximum of 300mg/kg.With the concentration of Cd increasing, the contents of SOD, CAT and POD first increased then decreased. It is concluded that Tagetespatula has certain tolerance to Cd stress. The study provides the basis to explain plant recovery from heavy metal pollution. |
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| Keywords: | Cadmium TagetespatulaL Chlorophyll MDA antioxidant enzymes |
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