生物多样性 ›› 2008, Vol. 16 ›› Issue (5): 484-491.DOI: 10.3724/SP.J.1003.2008.07338

• 研究报告 • 上一篇    下一篇

新疆野扁桃天然居群形态变异的研究

曾斌1, 罗淑萍2,*(), 李疆1, 聂文魁2, 张峰1, 李海龙3   

  1. 1 新疆农业大学园艺学院, 乌鲁木齐 830052
    2 新疆农业大学农学院, 乌鲁木齐 830052
    3 塔城地区裕民县野扁桃林自然保护区经营管理所, 新疆裕民 834700
  • 收稿日期:2007-11-05 接受日期:2008-06-16 出版日期:2008-09-20 发布日期:2008-09-20
  • 通讯作者: 罗淑萍
  • 作者简介:*(luoshuping2008@163.com)
  • 基金资助:
    国家自然科学基金(30760205);新疆维吾尔自治区教育厅高校科研计划重点项目(XJEDU2006I26)

Morphological variations in natural populations ofAmygdalus ledebouriana

Zeng Bin1, Luo Shuping2,*(), Li Jiang1, Nie Wenkui2, Zhang Feng1, Li Hailong3   

  1. 1 Horticultural College of Xinjiang Agricultural University, Urumqi 830052
    2 Agronomy College of Xinjiang Agricultural University, Urumqi 830052
    3 Administration Bureau of Wild-Almond Natural Protecting Area, Yumin County, Tacheng District, Xinjiang 834700
  • Received:2007-11-05 Accepted:2008-06-16 Online:2008-09-20 Published:2008-09-20
  • Contact: Luo Shuping

摘要:

为了从数量上分析新疆野扁桃(Amygdalus ledebouriana)天然居群表型性状在居群间和居群内的变异, 我们于2007年对分布在新疆的5个野扁桃天然居群的8个表型性状进行了测量和比较分析。结果表明: 新疆野扁桃表型性状在居群间和居群内均存在着较丰富的差异, 居群内的变异大于居群间的变异, 居群间的分化相对较小; 利用居群间欧氏距离进行UPGMA聚类分析表明, 5个天然居群可以划分为3类, 表型性状的欧式遗传距离与地理距离相关不显著。主成分综合分析结果显示: 新梢长宽比、叶片长宽比、果核千粒重、果核长宽比及花冠直径等5个表型性状指标是反映新疆野扁桃表型差异的主要因素。

关键词: 新疆野扁桃, 天然居群, 形态变异

Abstract

In order to investigate patterns of phenotypic trait variation in natural populations of Amygdalus ledebouriana, we measured eight morphological traits in five A. ledebouriana populations in Xinjiang. Rich phenotypic variation existed both among and within populations, and variation was greater within populations than among populations. Our UPGMA cluster analysis indicated that the five populations formed three distinct groups. We detected no relationship between geographic distance and Euclidean distance. Principal component analysis showed that shoot length/shoot width, leaf length/leaf width, mass per 1,000 seeds, seed length/seed width, and corolla diameter were the most important phenotypic traits that accounted for the morphological variation of A. ledebouriana.

Key words: Amygdalus ledebouriana, population, morphological variation