›› 2009, Vol. 17 ›› Issue (6): 803-806.DOI: 10.11733/j.issn.1007-0435.2009.06.020

Previous Articles     Next Articles

Physiological Responses of Medicago sativa L. cv. Zhaodong to High Temperature Stress

JIANG Yi-bao1, WANG Cheng-zhang1, CUI Guo-wen2   

  1. 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
  • Received:2008-07-10 Revised:2009-09-14 Online:2009-12-15 Published:2009-12-15

肇东苜蓿对高温的生理响应

姜义宝1, 王成章1, 崔国文2   

  1. 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
  • 通讯作者: 崔国文,E-mail:cgw603@163.corn
  • 作者简介:姜义宝(1976- ),男,山东巨野县人,讲师,博士研究生,研究方向为牧草栽培、加工与应用,E-mail: yibaojiang@sina.com
  • 基金资助:
    国家科技支撑计划项目(2006BAD0409);河南省教育厅项目(2009A230004)

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.

Key words: Medicago sativa L.cv.Zhaodong, High temperature, Chlorophyll fluorescence, Antioxidase

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.

关键词: 肇东苜蓿, 高温, 叶绿素荧光, 抗氧化酶

CLC Number: