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中国农学通报 ›› 2024, Vol. 40 ›› Issue (13): 96-101.doi: 10.11924/j.issn.1000-6850.casb2023-0144

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

紫薇种质资源在武汉地区的物候期特征分析

王芝懿1,2(), 李振芳1, 彭婵1, 陈英2, 张新叶1()   

  1. 1 湖北省林业科学研究院,武汉 430075
    2 南京林业大学,南京 210037
  • 收稿日期:2023-02-21 修回日期:2023-12-24 出版日期:2024-04-28 发布日期:2024-04-28
  • 通讯作者:
    张新叶,女,1973年出生,山西新绛人,研究员,博士,主要从事林木遗传育种研究。通信地址:430075 湖北省武汉市东湖新技术开发区森林大道枫林路39号 湖北省林业科学研究院,E-mail:
  • 作者简介:

    王芝懿,女,1996年出生,新疆乌鲁木齐人,硕士研究生,林木遗传育种。通信地址:430075 湖北省武汉市东湖新技术开发区森林大道枫林路39号 湖北省林业科学研究院,E-mail:

  • 基金资助:
    国家林业局“948”项目“紫薇优良亲本种质及育种技术引进”(2014-4-13)

Phenological Characteristics of Lagerstroemia indica Germplasm Resources in Wuhan

WANG Zhiyi1,2(), LI Zhenfang1, PENG Chan1, CHEN Ying2, ZHANG Xinye1()   

  1. 1 Huibei Academy of Forestry, Wuhan 430075
    2 Nanjing Forestry University, Nanjing 210037
  • Received:2023-02-21 Revised:2023-12-24 Published:2024-04-28 Online:2024-04-28

摘要:

对187份紫薇材料进行萌芽、展叶、开花、落叶等物候性状调查,分析其物候规律,进行综合分析评价,为紫薇种质资源物候性状评价提供理论依据及数据支持。研究结果表明,12个物候期变异系数为8.55%~52.01%,变异程度由大到小为叶芽萌动期>落叶始期>展叶开始期>落叶盛期>现蕾期>落叶末期>展叶盛期>开花始期>开花盛期>开花末期>幼果出现期>果实成熟期。各物候期间有42对物候呈现极显著正相关,6对物候呈显著相关,其余18对物候无显著相关性。主成分分析中前3个主成分贡献率分别为36.320%、23.282%和17.704%,累计贡献率达到77.305%。紫薇各物候期间差异大,相关性较显著,主成分分析中前3个主成分具有一定的代表性,可为该地区紫薇种质的开发、培育、保护和评价提供科学依据。

关键词: 紫薇, 物候, 遗传多样性, 相关性分析, 主成分分析

Abstract:

187 Lagerstroemia indica materials were investigated for phenological characteristics such as germination, leaf expansion, flowering, and defoliation, and their phenological laws were analyzed and evaluated comprehensively to provide theoretical basis and data support for the evaluation of the phenological characteristics of L. indica germplasm resources. The results showed that the coefficient of variation of 12 phenological periods ranged from 8.55% to 52.01%, and the order of variation from large to small was: leaf bud germination stage> defoliation stage> leaf expansion stage> defoliation stage> budding stage> late defoliation stage> leaf expansion stage> flowering stage> flowering stage> flowering stage> young fruit emergence stage> fruit maturity stage. There were 42 pairs of phenological periods with extremely significant positive correlation, 6 pairs of phenological periods with significant correlation, and the other 18 pairs of phenological periods with no significant correlation. In the principal component analysis, the contribution rates of the first three principal components were 36.320%, 23.282% and 17.704% respectively, and the cumulative contribution rate reached 77.305%. The results showed that there were large differences and more significant correlations between the various phenological periods of L. indica, and the first three principal components were representative in the principal component analysis, which provided a scientific basis for the development, cultivation, protection and evaluation of L. indica germplasm in the region.

Key words: Lagerstroemia indica, phenology, genetic diversity, correlation analysis, principal component analysis