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白杨派无性系苗期对干旱胁迫的生长生理响应及抗旱性综合评价

杨传宝 姚俊修 李善文 倪惠菁 刘元铅 张有慧 李际红

杨传宝, 姚俊修, 李善文, 倪惠菁, 刘元铅, 张有慧, 李际红. 白杨派无性系苗期对干旱胁迫的生长生理响应及抗旱性综合评价[J]. 北京林业大学学报, 2016, 38(5): 58-66. doi: 10.13332/j.1000-1522.20150503
引用本文: 杨传宝, 姚俊修, 李善文, 倪惠菁, 刘元铅, 张有慧, 李际红. 白杨派无性系苗期对干旱胁迫的生长生理响应及抗旱性综合评价[J]. 北京林业大学学报, 2016, 38(5): 58-66. doi: 10.13332/j.1000-1522.20150503
YANG Chuan-bao, YAO Jun-xiu, LI Shan-wen, NI Hui-jing, LIU Yuan-qian, ZHANG You-hui, LI Ji-hong. Growth and physiological responses to drought stress and comprehensive evaluation on drought tolerance in Leuce clones at nursery stage[J]. Journal of Beijing Forestry University, 2016, 38(5): 58-66. doi: 10.13332/j.1000-1522.20150503
Citation: YANG Chuan-bao, YAO Jun-xiu, LI Shan-wen, NI Hui-jing, LIU Yuan-qian, ZHANG You-hui, LI Ji-hong. Growth and physiological responses to drought stress and comprehensive evaluation on drought tolerance in Leuce clones at nursery stage[J]. Journal of Beijing Forestry University, 2016, 38(5): 58-66. doi: 10.13332/j.1000-1522.20150503

白杨派无性系苗期对干旱胁迫的生长生理响应及抗旱性综合评价

doi: 10.13332/j.1000-1522.20150503
基金项目: 

山东省农业良种工程专项(2012213)

详细信息
    作者简介:

    杨传宝。主要研究方向:林木遗传育种。Email:shannongziqiang@163.com 地址:271018 山东省泰安市泰山区岱宗大街61号山东农业大学。

    责任作者:

    李善文,博士,研究员。主要研究方向:林木遗传育种。Email: lishanwen66@163.com 地址:250014 山东省济南市文化东路42号山东省林业科学研究院。

Growth and physiological responses to drought stress and comprehensive evaluation on drought tolerance in Leuce clones at nursery stage

  • 摘要: 为揭示白杨派无性系对干旱环境的适应能力,筛选速生耐旱优良无性系,本文采用盆栽试验方法,通过土壤自然干旱处理,比较分析了土壤含水量分别占田间持水量80%以上(对照)、50%~70%(轻度干旱)、30%~50%(中度干旱)以及低于30%(重度干旱)等不同土壤干旱程度对9个白杨派无性系生长及生理代谢影响。结果表明:9个无性系之间的苗高增长量、地径增长量、生物量增量和根冠比差异均显著,其中无性系89和YX2表现出较强的速生性。叶绿素含量在轻度干旱胁迫时上升,中度和重度干旱胁迫下持续下降,其中下降最小的为无性系89和YX2。随干旱胁迫程度增加,9个无性系叶片脯氨酸和可溶性糖含量持续增加,其中无性系Z3、YX2和89显著高于相同干旱条件下其他无性系。干旱胁迫导致叶片细胞膜相对透性以及丙二醛(MDA)含量提高,但相同胁迫条件下,无性系Z3、89和YX2细胞膜相对透性以及MDA含量均显著低于其他无性系。超氧化物岐化酶(SOD)活性在轻度和中度干旱胁迫下逐渐增大,在重度干旱胁迫下减小,其中无性系89和YX2的SOD活性始终高于对照。进一步利用主成分分析和隶属函数法对9个无性系生长及生理代谢等参数进行综合评价,各无性系抗旱性由强到弱依次为89、YX2、LM50、Z3、Y3、150、27、26、1316。因此,初步认为无性系89和YX2具有显著耐旱性和速生性,可作为干旱立地造林或抗逆育种的重要试验材料。

     

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出版历程
  • 收稿日期:  2015-12-17
  • 修回日期:  2015-12-17
  • 刊出日期:  2016-05-31

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