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植物研究 ›› 2021, Vol. 41 ›› Issue (2): 213-220.doi: 10.7525/j.issn.1673-5102.2021.02.009

• 研究报告 • 上一篇    下一篇

紫丁香195个实生单株花表型性状变异分析

何芮庆2, 杨云尧2, 胡增辉1,2,3, 吴静1,2,3(), 冷平生1,2,3   

  1. 1.北京农学院林木分子设计育种高精尖创新中心,北京 102206
    2.北京农学院园林学院,北京 102206
    3.城乡生态环境北京实验室,北京 102206
  • 收稿日期:2019-12-19 出版日期:2021-03-20 发布日期:2021-01-05
  • 通讯作者: 吴静 E-mail:wjmxy1988@126.com
  • 作者简介:何芮庆(1994—),女,硕士研究生,主要从事园林植物方面的研究。
  • 基金资助:
    北京市教育委员会科技计划一般项目(KM201810020);国家自然科学基金项目(31800602);北京市属高等学校创新团队建设与教师职业发展计划项目(HT20180509);青年教师科研基金项目(SXQN201704)

Variation of Flower Phenotypic Traits on 195 Syringa oblata SeedSeedings Single Trees

Rui-Qing HE2, Yun-Yao YANG2, Zeng-Hui HU1,2,3, Jing WU1,2,3(), Ping-Sheng LENG1,2,3   

  1. 1.Beijing Advanced Innovation Center for Tree Breeding by Molecular Design,Beijing University of Agriculture,Beijing 102206
    2.College of Landscape Architecture,Beijing University of Agriculture,Beijing 102206
    3.Beijing Laboratory of Urban and Rural Ecological Environment,Beijing 102206
  • Received:2019-12-19 Online:2021-03-20 Published:2021-01-05
  • Contact: Jing WU E-mail:wjmxy1988@126.com
  • About author:HE Rui-Qing(1994—),female,postgraduate,engaged in landscape plants.
  • Supported by:
    General Project of Science and Technology Plan of Beijing Municipal Education Commission(KM201810020);National Natural Science Foundation of China(31800602);Innovative team building and teacher career development plan projects of Beijing-owned universities(HT20180509);Young Teacher Research Fund Project(SXQN201704)

摘要:

为了准确掌握紫丁香资源花部性状的变异程度及表型多样性水平,为紫丁香优良品种的选育提供理论依据。本研究以195株紫丁香实生单株为材料,对其5个数量性状和4个质量性状的变异、性状间相关性和聚类关系等进行了分析。结果表明,5个数量性状在群体内表现出极显著差异(P<0.01),且符合正态分布,变异系数为19.72%~30.22%,平均24.97%,其中花序长变异最大;根据ISCC-NBS色彩名称表示法将群体花色划分为白色系、浅粉色系、紫色系、紫红色系、紫粉色系和蓝紫色系等6个色系,其中紫色系(54.35%)和紫红色系(32.31%)所占比例最大;4个质量性状的多样性指数为0.36~1.09,平均0.86,其中花冠裂片(状态)最大,表明群体中质量性状变异类型丰富。相关性分析表明,5个数量性状之间均呈现极显著正相关,其中花序长与花序宽相关系数最大,为0.767。聚类分析表明,195株紫丁香基于欧氏距离可分为3大类,第一类群主要性状表现为花冠筒长;第二类群表现为花序长;第三类群表现为花冠裂片长。参试紫丁香资源花部性状表型变异丰富。

关键词: 紫丁香, 实生单株, 花表型性状, 变异分析

Abstract:

To accurately grasp the variation degree of floral traits and the phenotypic diversity level of Syringa oblata, so as to provide a theoretical basis for the breeding of S.oblata excellent varieties. The 195 seed seedlings of S.oblata trees around 8 years old were used to analyze the genetic variation, trait correlation and clustering relationship of 5 quantitative traits and four quality traits. Five quantitative traits were extremely significant differences among the 195 trees(P<0.01), and accorded with the normal distribution. The genetic variation coefficients were from 19.72%-30.22%, with an average of 24.97%, and the inflorescence length was the largest. According to the ISCC-NBS method, the group colors were divided into six color groups, namely white, pale pink, purple, purplish red, purplish pink and violet groups. Purple group(54.35%) and purplish red group(32.31%) accounted for the largest proportion; the diversity index of four quality traits ranged from 0.36 to 1.09, with an average of 0.86, of which the corolla lobes(state) were the largest, indicating that the quality traits were abundant within 195 trees. By correlation analysis, there were significant positive correlations between the five quantitative traits, and the correlation coefficient between inflorescence length and inflorescence width was the largest(0.767). By cluster analysis, the 195 samples of S.oblata can be divided into three categories based on euclidean distance. The first type was characterized by corolla tube length; the second group was characterized by long inflorescence; the last type was characterized by corolla lobes. The phenotypic variation of floral traits in the tested genetic resources of S.oblata was richer.

Key words: Syringa oblata, seed seedling trees, floral phenotypic traits, variation analysis

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