西南林业大学学报2011，Vol.31Issue(5)：19-23,5.DOI:10.3969/j.issn.2095-1914.2011.05.005
蜡梅天然群体表型多样性分析
Phenotypic Diversity in Natural Populations of Chimonanthus praecox
摘要
Abstract
According to the morphology of leaf, fruit and seed and other 5 phenotypic traits of Chimonanthus praecox plants, the phenotypic diversity of C. Praecox was analyzed by randomly choosing 9 natural populations as study objects in its distribution areas. The results showed that there was a great variation in morphological characteristics among the populations, the F values of the 8 phenotipic traits ranged from 0. 99 to 65. 90. There were significant differences or extremely significant differences in 6 of the 8 traits among the populations, except for the fruit length and unit grain weight indices. While inside the populations, there was significant difference only in the fruit width trait, and there were no significnat differences in other 7 traits within the populations. The mean phenotypic differentiation coefficient ( Vst) of the 8 traits was 63. 16%. The percentage of variance portion among populations was 8. 90% , but 3. 04% within the populations, indicating that the variance among populations was the main source of the phenotypic variation. The correlation analyses of the phenotypic traits with the geographical factorsshowed that there was extremely significant negative correlation between the width of fruit and latitude, and there was significant negative correlation between seed quantity, the unit grain weight and the latitude respectively. There was no significant correlation between 6 other phenotypic traits and the geographical factors. The UPGMA cluster analysis showed that the phenotypic traits of the 9 natural populations of C. Praecox were not fully clustered in accordance with the geographical distance, and this conclusion was reflected by the interrupted island distribution pattern of C. Praecox populations.关键词
蜡梅/天然群体/表型多样性Key words
Chimonanthus praecox/natural population/phenotypic diversity分类
农业科技引用本文复制引用
张彩霞,左丹丹,赵海涛,邓敏,熊昌发,刘春,袁素霞,明军..蜡梅天然群体表型多样性分析[J].西南林业大学学报,2011,31(5):19-23,5.基金项目
国家社会公益研究项目(2005DIB022)资助 （2005DIB022）
湖北省自然科学基金(2004ABA142)资助 （2004ABA142）
林木、花卉遗传育种教育部重点实验室开放基金(200605-12)资助. （200605-12）
