摘要
以山桐子全分布区的12个天然群体采集材料为试材,对当年生的叶、果、果穗等15个性状进行比较分析,以揭示其表型变异程度和变异规律,并讨论了群体间和群体内的表型多样性。结果表明:山桐子种内表型性状,在群体间和群体内都存在着极其丰富的变异。山桐子表型性状与地理气候因子相关分析中,只有叶长、叶宽,果形指数,单果出籽率和千粒重与生态因子有显著相关关系。利用群体间欧式距离进行的UPGMA聚类分析表明,山桐子群体可划分为3大类。
12 natural groups of Idesia polycarpa were taken as trial materials.The annual leaves,fruit,ear and other 12 phenotypic characteristics of Idesia polycarpa were analyzed comparatively to reveal the extent of phenotypic variation,the variation rule and the phenotypic diversity among different populations and groups.The results showed that the intraspecific phenotypic traits of Idesia polycarpa were extremely rich in variations among different populations and groups.The correlation analysis between phenotypic characteristics of Idesia polycarpa and geographical and climatic factors showed that the leaf length and width,fruit shape index,seed quantity of single fruit and grain weight had a significant correlation with ecological factors.The UPGMA cluster analysis indicated that Idesia polycarpa groups could be divided into three categories.
出处
《湖南农业科学》
2010年第6期7-10,共4页
Hunan Agricultural Sciences
基金
浙江省科技厅重大科技专项重点农业项目(2008C12018)
关键词
山桐子
天然群体
表型性状
表型多样性
Idesia polycarpa
natural groups
phenotypic characters
phenotypic diversity
