| 肇东苜蓿对高温的生理响应 |
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| 引用本文： | 姜义宝,王成章,崔国文.肇东苜蓿对高温的生理响应[J].草地学报,2009,17(6):803-806. |
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| 作者姓名： | 姜义宝 王成章 崔国文 |
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| 作者单位： | 1. 河南农业大学牧医工程学院, 河南, 郑州, 450002;2. 东北农业大学动物科学技术学院, 黑龙江, 哈尔滨, 150030 |
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| 基金项目： | 国家科技支撑计划项目，河南省教育厅项目 |
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| 摘 要： | 高温对紫花苜蓿(Medicago sativa L.)产生伤害,使其生长缓慢,易生病害,以肇东苜蓿(Medicago sativa L. cv. zhaodong)为材料,研究在0℃高温胁迫条件下叶片细胞膜相对透性、叶绿素含量、抗氧化系统和叶绿素荧光特性等生理指标的变化情况.结果表明:随高温时间的延长,肇东苜蓿叶片的细胞膜相对透性和丙二醛(MDA)含量增高,叶绿素含量、过氧化物酶(POD)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)等抗氧化系统以及叶绿素荧光Fv/Fm、Fv/Fo呈降低的变化趋势.高温下生理指标的改变,可为高温地区肇东苜蓿栽培管理和抗热苜蓿品种选育提供理论依据.
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| 关 键 词： | 肇东苜蓿 高温 叶绿素荧光 抗氧化酶 |
| 收稿时间： | 2008-07-10 |
Physiological Responses of Medicago sativa L. cv. Zhaodong to High Temperature Stress |
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| JIANG Yi-bao,WANG Cheng-zhang,CUI Guo-wen.Physiological Responses of Medicago sativa L. cv. Zhaodong to High Temperature Stress[J].Acta Agrestia Sinica,2009,17(6):803-806. |
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| Authors: | JIANG Yi-bao WANG Cheng-zhang CUI Guo-wen |
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| Institution: | 1. College of Animal and Veterinary Engineering, Henan Agricultural University, Zhengzhou, Henan Province 450002, China;2. College of Animal Science and Technology, Northeast Agricultural University, Harbin, Heilongjiang Province 150030, China |
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| Abstract: | High temperature is harmful to alfalfa and induces slow growth and incidence of disease. In this paper, leaf cell membrane permeability, chlorophyll content, anti-oxidative system, and the chlorophyll fluorescence characteristics of Medicago sativa L. cv. Zhaodong were analyzed under high temperature stress (40℃). The results show that with the increasing exposure time to high temperature, leaf cell membrane permeability and MDA content were increased, while leaf chlorophyll content, activities of POD, SOD and CAT, chlorophyll fluorescence Fv/Fm and Fv/Fo had a decreasing tendency. This study offers the theoretical guidance for alfalfa planting and management in high temperature region and the breeding and selection of high temperature resistant variety. |
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| Keywords: | Medicago sativa L cv Zhaodong High temperature Chlorophyll fluorescence Antioxidase |
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