文献类型：期刊文献

中文题名：海南岛油楠天然群体种子表型变异及其对种子萌发、幼苗生长的影响

英文题名：The phenotypic variation of seed of Sindora glabra geographic populations and its effect on seed germination and seedling

作者：吴忠锋[1] 杨锦昌[2] 尹光天[2] 李荣生[2] 邹文涛[2] 袁洁[2]

第一作者：吴忠锋

机构：[1]广州市林业和园林科学研究院;[2]中国林业科学研究院热带林业研究所

年份：2017

卷号：37

期号：4

起止页码：64-69

中文期刊名：中南林业科技大学学报

外文期刊名：Journal of Central South University of Forestry & Technology

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2017_2018】；

基金：国家自然科学基金项目(31570656);林业公益性行业科研专项(201304604)

语种：中文

中文关键词：油楠;种子;表型变异;种子萌发;地理因子;幼苗

外文关键词：Sindoraglabra; seed： phenotypic variation; seed germination; geographic factors; seedling

分类号：S718.54;S722.13

摘要：以海南岛油楠主要分布区6个天然群体为研究对象,对种子性状、种子萌发及幼苗生长指标进行系统的比较分析,采用巢式方差分析、变异系数及聚类分析等多种分析方法,对油楠种子表型变异进行了讨论,运用相关分析对种子性状间及其与地理因子、种子萌发、幼苗发育的相关性进行探讨。结果表明:油楠种子性状在种群间及种群内的差异均达到极显著水平;种子各性状平均表型分化系数为24.45%,即群体内变异远大于群体间变异;种子性状与地理因子间相关性较差;系统聚类可将油楠划分为3类,且与各地理分布区有高度吻合性;种子萌发及幼苗发育特征的种群间差异极显著,种子萌发率与种子性状不存在显著相关性,但种子千粒重与幼苗地径、苗高分别存在极显著、显著的相关性,说明种子千粒重越大,幼苗初期地径、苗高越大。本研究对油楠种质资源评价利用及苗木更新具有重要意义。
Totally 6 natural population of Sindora glabra as test materials, five characteristics of seeds, seed germination and seedling characteristics were investigated, using correlation analysis to study their relationship among them, the phenotypic diversity among and within the populations were studied by the method of nested variance analysis, clustering analysis, etc. Significant differences were observed in the 1 000-seed weight, seed length, seed width, seed thickness, seed length/width ratio among and within populations. The mean phenotypic differentiation coefficient among populations was 24.45%, and the variation within the populations was higher than that among the populations. The phenotypic traits had poor correlation within geographic factors. The 6 S.glabra populations could be clustered into 3 groups, and there were highly consistent within the geographic distribution. Significant differences were observed in the seed germination and seedling among the populations. Seed germination had no significant correlation with phenotypic traits, but 1 000- seed weight had significant correlation with stem base and height of seedling, all these phenomena demonstrated that the larger 1 000-seed weight was, the faster of seedling growth. These findings offer basic data for the conservation biology and renewing of natural vegetation of these species.