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。
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 ofA. ledebouriana.
出处
《生物多样性》
CAS
CSCD
北大核心
2008年第5期484-491,共8页
Biodiversity Science
基金
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)
关键词
新疆野扁桃
天然居群
形态变异
Amygdalus ledebouriana, population, morphological variation
