湖北农业科学 ›› 2018, Vol. 57 ›› Issue (7): 96-99.doi: 10.14088/j.cnki.issn0439-8114.2018.07.022

• 园艺·特产 • 上一篇    下一篇

高温胁迫下猕猴桃幼苗相关生理指标的变化

钟敏a,b, 张文标b, 黄春辉b, 陶俊杰b, 曲雪艳b, 吴寒b, 徐小彪a,b   

  1. 江西农业大学,a.林学院;
    b.猕猴桃研究所,南昌 330045
  • 收稿日期:2017-11-29 发布日期:2020-01-14
  • 通讯作者: 徐小彪,(电话)13767008891(电子信箱)xbxu@jxau.edu.cn。
  • 作者简介:钟 敏(1980-),女,江西萍乡人,讲师,在读博士研究生,研究方向为果树种质资源与生物技术,(电话)13677004615(电子信箱)chenmined@126.com;
  • 基金资助:
    江西省科技厅重大科技专项(20143ACF60015; 20161ACF60007); 江西省猕猴桃产业技术体系建设专项(JXARS-05); 江西省自然科学基金项目(20151BAB204032)

Effects of High Temperature Stress on Related Heat-resistance Index in Kiwifruit Seedlings

ZHONG Mina,b, ZHANG Wen-biaob, HUANG Chun-huib, TAO Jun-jieb, QU Xue-yanb, WU Hanb, XU Xiao-biaoa,b   

  1. a.College of Agronomy;
    b.Kiwifruit Institute,Jiangxi Agricultural University,Nanchang 330045,China
  • Received:2017-11-29 Published:2020-01-14

摘要: 以猕猴桃属毛花猕猴桃和中华猕猴桃幼苗为材料,采用不同高温处理,探明高温胁迫对猕猴桃幼苗耐热性相关生理指标的影响。结果表明,两种猕猴桃幼苗随高温胁迫处理温度的升高,其叶绿素含量均表现出持续降低的趋势;脯氨酸(Pro)含量随温度升高呈先下降再上升的规律;丙二醛(MDA)含量则持续增加;过氧化物酶(POD)、超氧化物歧化酶(SOD)和过氧化氢酶(CAT)活力均呈现出先小幅度波动再增加的规律。在高温胁迫下,猕猴桃幼苗会随温度的变化产生相应生理适应变化,植物的耐热性是各耐热生理指标综合作用的结果,且在38~40℃高温条件下,毛花猕猴桃幼苗各项耐热指标综合表现优于中华猕猴桃幼苗。

关键词: 毛花猕猴桃, 中华猕猴桃, 耐热性, 生理指标

Abstract: In order to elucidate the influences of high temperature on the physiological and biochemical indexes of the seedlings of kiwifruit,the seedlings of the A. eriantha and the A. chinensis were treated with different high temperature. The physiological and biochemical levels of The chlorophyll content(CC),proline content,malondialdehyde content(MDA),peroxidase activity(POD),superoxide dismutase activity(SOD) and catalase activity(CAT) were measured. The result indicated that the CC content of the two kiwifruit seedlings increased with the high-temperature stress. The proline content decreased with the lower temperature then increased with higher temperature. The MDA increased continuously; The activity of POD,SOD and CAT showed a small fluctuation before increasing. Under high-temperature stress,the kiwifruit seedlings have physiological and biochemical responses to adapt the change of temperature. Under the condition of 38~40 ℃,the resistance of A. eriantha and seedlings was better than the A. chinensis seedlings.

Key words: A. chinensis, A. eriantha, heat resistance, physiological and biochemical indexes

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