Acta Agrestia Sinica

Acta Agrestia Sinica ›› 2016, Vol. 24 ›› Issue (1): 222-225.DOI: 10.11733/j.issn.1007-0435.2016.01.032

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Physiological and Biochemical Response of Fagopyrum dibotrys to High Temperature Stress and Evaluation of Their Heat Tolerance

ZHAO Li-li1, CHEN Chao1, DENG Rong2, ZHAO Li-fen3, YANG Fang4   

  1. 1. Department of Grassland Science, College of Animal Science, Guizhou University, Guiyang, Guizhou Province 550025, China;
    2. Guizhou Institute of Animal Husbandry and Veterinary, Guiyang, Guizhou Province 550005, China;
    3. Guizhou Grass Supervise Station, Guiyang, Guizhou Province 550002, China;
    4. Liupanshui Agriculture Committee, Liupanshui, Guizhou Province 553001, China
  • Received:2014-10-08 Revised:2015-03-20 Online:2016-02-15 Published:2016-04-26

高温对金荞麦生理生化特征的影响及其耐热性评价

赵丽丽1, 陈超1, 邓蓉2, 赵丽芬3, 杨芳4   

  1. 1. 贵州大学动物科学学院草业科学系, 贵州 贵阳 550025;
    2. 贵州省畜牧兽医研究所, 贵州 贵阳550005;
    3. 贵州省草原监理站, 贵州 贵阳 550002;
    4. 六盘水市农委, 贵州 六盘水 553001
  • 通讯作者: 陈超
  • 作者简介:赵丽丽(1981-),女,内蒙古通辽人,博士,副教授,从事牧草种质资源及育种研究,E-mail:zhaolili_0508@163.com
  • 基金资助:

    省科技成果重点推广计划[黔科合成字(2013)5084];省动植物育种专项[黔农育专字(2012)018];国家自然科学基金项目(31560664);贵州省农业攻关计划项目(黔科合NY字[2014]3048号)(黔科合NY[2010]3049号)资助

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Abstract:

To elucidate the physiological and biochemical mechanism of F. dibotrys heat tolerance, changes of physiological and biochemical indexes in eight germplasm resourses of F. dibotrys were studied under high temperature. The results showed that the electric conductivity, MDA content, proline content of F. dibotrys increased under high temperature. Soluble protein content increased at the beginning, and then decreased with the temperature increasing. The activities of superoxide dismutase(SOD), catalase(CAT) and peroxidase(POD) increased under high temperature. The order of heat tolerance of eight germplasm resourses was as follow: JQ6> JQ2> JQ3> JQ1> JQ8> JQ4> JQ5> JQ7.

Key words: Fagopyrum dibotrys, Physiological and biochemical index, Heat tolerance

摘要：

为阐明金荞麦(Fagopyrum dibotrys Hara)耐热生理生化机制,以8个金荞麦种质为试验材料,研究高温对其生理生化指标的影响。结果表明:高温处理后,各金荞麦种质的相对电导率、丙二醛(MDA)和脯氨酸(Pro)含量增加;可溶性蛋白(SP)含量先升高后降低;超氧化物岐化酶(SOD)、过氧化氢酶(CAT)和过氧化物酶(POD)活性增加。综合分析,评价出供试材料耐热顺序为:JQ6> JQ2> JQ3> JQ1> JQ8> JQ4> JQ5> JQ7。

关键词: 金荞麦, 生理生化指标, 耐热性

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