| 外源亚精胺对棉花幼苗抗冷性的生理生态特征影响 |
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| 引用本文： | 李锐,李生泉,范月仙.外源亚精胺对棉花幼苗抗冷性的生理生态特征影响[J].激光生物学报,2011,20(2):175-179,185. |
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| 作者姓名： | 李锐 李生泉 范月仙 |
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| 作者单位： | 1. 山西农业大学文理学院,山西,太谷,030801
2. 山西农业大学信息科学与工程学院,山西,太谷,030801 |
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| 基金项目： | 山西省自然科学基金项目 |
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| 摘 要： | 以棉花幼苗为试材，分析不同浓度的亚精胺（Spermidine，Spd）（0．01mmol／L、0．10mmol／L、0．50mmol／L和1．00mmol／L）处理对棉花幼苗生长、生理生态特性的影响，以弄清Spd增强棉花抗冷性的效果及其生理机制。结果表明，Spd预处理棉花叶片可提高冷胁迫条件下棉花幼苗抗冷性，具体表现为Spd处理棉花幼苗可增加幼苗体内干物质和含水量，降低叶片冷害指数、电解质渗漏率和丙二醛（MDA）含量，增强超氧化物歧化酶（SOD）、过氧化物酶（POD）和过氧化氢酶（CAT）活性，提高抗坏血酸、脯氨酸和可溶性糖含量。表明Spd可以改变冷胁迫条件下棉花幼苗体内生理生化指标，从而缓解冷胁迫对棉花的伤害，其中以0．50mmol／L的Spd处理效果较理想。
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| 关 键 词： | 棉花 亚精胺 抗冷性 |
Effect of Spermidine on Eco-physiological Characteristics of Chilling-tolerance in Cotton Seedlings |
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| LI Rui,LI Sheng-quan,FAN Yue-xian.Effect of Spermidine on Eco-physiological Characteristics of Chilling-tolerance in Cotton Seedlings[J].ACTA Laser Biology Sinica,2011,20(2):175-179,185. |
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| Authors: | LI Rui LI Sheng-quan FAN Yue-xian |
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| Institution: | LI Rui~a,LI Sheng-quan~b,FAN Yue-xian~a (Shanxi Agricultural University a.College of Arts and Sciences,b.College of Information Science and Engineering,Taigu 030801,Shanxi,China) |
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| Abstract: | Cotton seedlings which were spread by spermidine(Spd) of different concentrations were used to study the effect of Spd on their growth,physiological and biochemical characteristics in order to ascertain effects and physiological mechanisms of Spd on chilling-tolerance of cotton.The results showed that Spd could enhance chilling-tolerance of cotton seedlings under chilling stress.Pretreatment of Spd could improve increase of dry matter and water content,obviously decrease chilling injury index,electrolytic l... |
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| Keywords: | cotton spermidine chilling-tolerance |
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