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植物研究 ›› 2018, Vol. 38 ›› Issue (5): 682-687.doi: 10.7525/j.issn.1673-5102.2018.05.007

• 研究报告 • 上一篇    下一篇

长白落叶松无性系抗寒性比较研究

郑密1, 赵国辉2, 孙晓阳2, 张秦徽1, 赵昕2, 董利虎1, 李凤日1, 赵曦阳1   

  1. 1. 林木遗传育种国家重点实验室, 林学院, 东北林业大学, 哈尔滨 150040;
    2. 吉林四平林木种子园, 四平 136000
  • 收稿日期:2018-04-02 出版日期:2018-09-15 发布日期:2018-08-31
  • 通讯作者: 赵曦阳 E-mail:zhaoxyphd@163.com
  • 作者简介:郑密(1982-),女,博士,主要从事林木遗传改良工作。
  • 基金资助:
    国家十三五重点研发项目(2017YFD0600402)

Comparative Analysis of Cold Resistance Ability of Larix olgensis Clones

ZHENG Mi1, ZHAO Guo-Hui2, SUN Xiao-Yang2, ZHANG Qin-Hui1, ZHAO Xin2, DONG Li-Hu1, LI Feng-Ri1, ZHAO Xi-Yang1   

  1. 1. State Key Laboratory of Tree Genetics and Breeding, School of Forestry, Northeast Forestry University, Harbin 150040;
    2. Seed Orchard of Siping, Siping 136000
  • Received:2018-04-02 Online:2018-09-15 Published:2018-08-31
  • Supported by:
    The National Key Research and Development Program of China(2017YFD0600402)

摘要: 以58个长白落叶松无性系1年生枝条为材料,对其进行低温胁迫处理,探讨不同无性系抗寒差异,结果表明:不同温度和时间的处理条件下,4个落叶松无性系电导率不同,随着低温胁迫时间的延长和温度的降低,不同无性系电导率呈上升趋势。在相同温度及时间处理条件下(-40℃、12 h),58个长白落叶松无性系相对电导率差异达极显著水平(P<0.01)。以-40℃、12 h处理下各无性系电导率与对照的差值为指标,利用聚类法进行分析,初步筛选出9个抗寒性较强的无性系(L5、L16、L21、L23、L27、L40、L73、L78和L90),这些无性系可作为抗寒优良无性系进行考察,本研究为落叶松抗寒良种选育提供基础。

关键词: 长白落叶松, 无性系, 相对电导率, 抗寒性, 选择

Abstract: One-year-old twigs of 58 Larix olgensis clones were taken as materials and low temperature stress experiment were conducted to discuss the cold resistance ability of different L.olgensis clones. Different relative conductivity were found in four L.olgensis clones under different time and temperature treatment, the trance were increased with the temperature decreased and stress time extend. With the same stress(-40℃, 12 h) condition, the relative conductivity showed significant different among 58 L.olgensis clones(P<0.01). With the difference of relative conductivity between treatment(-40℃, 12 h) and control as analysis trait, 9 strong cold resistance clones were selected(L5, L16, L21, L23, L27, L40, L73, L78 and L90) by hierarchical clustering. These clones could be considered as excellent cold resistance clones and the research can supply basis for improved variety breeding of cold stress in L.olgensis.

Key words: Larix olgensis, clones, relative conductivity, cold resistance, selection

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