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林业科学 ›› 2014, Vol. 50 ›› Issue (4): 137-143.doi: 10.11707/j.1001-7488.20140420

• 研究简报 • 上一篇    下一篇

砂生槐天然群体种实性状的表型多样性

林玲1, 王军辉2, 罗建3, 陈帅1   

  1. 1. 西藏农牧学院资源与环境学院 林芝 860000;
    2. 中国林业科学研究院林业研究所 国家林业局林木培育重点实验室 北京 100091;
    3. 西藏高原生态研究所 林芝 860000
  • 收稿日期:2013-05-13 修回日期:2013-09-16 出版日期:2014-04-25 发布日期:2014-05-06
  • 基金资助:

    林业公益性行业科研专项（200904033）；国家自然科学基金项目（31260049）；西藏自治区大学生创新计划（2012）。

Phenotypic Diversity of Seed and Fruit Traits in Natural Populations of Sophora moorcroftiana

Lin Ling1, Wang Junhui2, Luo Jian3, Chen Shuai1   

  1. 1. Department of Resources and Environment, Tibet Agricultural and Animal Husbandry College Nyingchi 860000;
    2. Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration Research Institute of Forestry, Chinese Academy of Forestry Beijing 100091;
    3. Research Institute of Tibet Plateau Ecology Nyingchi 860000
  • Received:2013-05-13 Revised:2013-09-16 Online:2014-04-25 Published:2014-05-06
  • Contact: 罗建

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关键词: 砂生槐, 天然群体, 种实性状, 表型多样性

Abstract:

In this study, the natural variation of the seed characteristics of Sophora moorcroftiana, a Tibet plateau endemic plant, was investigated. Twelve representative natural populations were selected in terms of the principle that sampling points (groups) would cover the whole distribution area of S. moorcroftiana and taking into account the differences in habitat area. The pod length, pod width, number of seeds per pod, seed transverse diameter, longitudinal diameter and thousand-grain weight for every groups were measured, and based on these data the phenotypic diversity within and between natural populations of S. moorcroftiana was analyze by using the coefficient of variation, the nested variance analysis and cluster analysis methods. The results showed that: 1) the variation in 6 seed characteristics among the populations reached significant level, and the variation in 6 seed characteristics within populations also reached significant level except thousand-grain weight. There existed relatively rich diversity within and between groups, and the mean phenotypic differentiation coefficient(VST) among populations was 39.25%, less than that within populations (60.75%);2) there were no significant relationships between the six seed characteristics and longitude and latitude, however, the characteristics were significantly correlated with altitude, mean annual temperature and precipitation. The pod became shorter and thicker, the seed number per pod reduced and the seed size became bigger with the increase of elevation; 3) the 12 natural populations of S. moorcroftiana were clustered into four categories using Euclidean distance of UPGMA cluster.

Key words: Sophora moorcroftiana, natural population, seed and fruit traits, phenotypic diversity

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