| 甜菜碱对干旱胁迫下棉花幼苗生理特性的影响 |
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| 引用本文： | 高雁,李春,娄恺.甜菜碱对干旱胁迫下棉花幼苗生理特性的影响[J].植物营养与肥料学报,2011,17(2):513-516. |
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| 作者姓名： | 高雁 李春 娄恺 |
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| 作者单位： | 1.石河子大学农学院,新疆生产建设兵团化工绿色过程重点实验室,新疆石河子&832003; |
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| 基金项目： | 新疆农科院2007青年科技创新基金项目(2007Q08)资助 |
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| 摘 要： | 以新疆广泛种植的棉花品种新陆早18号为试材，通过测定棉花幼苗体内脯氨酸、可溶性糖和丙二醛（MDA）的含量及抗氧化酶包括超氧化物歧化酶（SOD）、过氧化氢酶（CAT）和过氧化物酶（POD）的活性，研究叶面喷施不同浓度甜菜碱（Glycine betaine，GB）对干旱胁迫下棉花幼苗生理特性的影响。结果表明，干旱胁迫下，与对照相比，脯氨酸、可溶性糖、MDA含量及SOD和POD活性都显著提高，喷施甜菜碱后促进脯氨酸和可溶性糖含量进一步提高，酶活也显著升高，同时有效抑制了丙二醛含量的增加，CAT活性受干旱胁迫及甜菜碱的影响较小。研究表明喷施低浓度甜菜碱在一定程度上可以缓解干旱胁迫对棉花幼苗的伤害。
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| 关 键 词： | 棉花 外源甜菜碱 干旱胁迫 生理特性 |
| 收稿时间： | 2010-08-10 |
Effect of glycine betaine on physiological characteristics of cotton seedlings under drought stress |
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| GAO Yan,LI Chun,LOU Kai.Effect of glycine betaine on physiological characteristics of cotton seedlings under drought stress[J].Plant Nutrition and Fertilizer Science,2011,17(2):513-516. |
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| Authors: | GAO Yan LI Chun LOU Kai |
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| Institution: | 1.College of Agronomy,Key Laboratory of Green Chemical Process of Xinjiang Production and Construction Crops/Shihezi University,Shihezi,Xinjiang 832003 China; |
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| Abstract: | The effects of drought stress on cotton seedlings were evaluated in terms of the activities of antioxidant enzymes such as superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT),and the content of malondialdehyde(MDA).Similarly,the effects of foliar application of glycine betaine(GB) in plants subjected to drought were examined.The contents of compatible solutes,proline,and soluble sugars were measured to assess the osmotic adjustments under different treatments.The levels of SOD,POD and compatible sol... |
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| Keywords: | cotton exogenous glycine betaine drought stress physiological characteristics |
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