西南林业大学学报2016，Vol.36Issue(5)：1-9,9.DOI:10.11929/j.issn.2095-1914.2016.05.001
基于针叶性状云南松天然群体表型分化研究
Study on the P henotypic Differentiation of Needle Traits Among P opulations of Pinus yunnanensis
摘要
Abstract
In this study, seven traits of ten bundle needles of each trees collected from 18 populations of Pinus yunnanensis in main distribution regions were measured. The results showed that there were significant differences both among populations and within populations in each needle trait, which suggested that there existed wide and a-bundant genetic variation in P. yunnanensis populations. There were different variation tendency of each needle trait among populations. The phenotypic variation was more abundant within population than among populations. The co-efficients of variation ( CV) were lower than 50%. There were weak phenotypic differentiation or no phenotypic dif-ferentiation for each pair-wise population based on individual needle trait. Different needle traits revealed the genetic relationship among populations in varying degrees. The complex of the measured needle traits could reflect the genetic relationship among populations. The test on geographical and ecological distance with relations of genetic distance of each trait indicated that was no obvious effect of isolation by distance ( IBD) and isolation of ecology ( IBE) in needle trait, but the effect of IBE was more obvious than IBD. The phenotypic differentiation among pop-ulations may be influenced by the complex of the geographical, climatic and soil factors. Cluster analysis indicated that each popolation was not clustered entirely based on geographical distribution.关键词
云南松/群体/针叶性状/表型分化/遗传变异Key words
Pinus yunnanensis/population/needle traits/phenotypic differentiation/genetic variation分类
农业科技引用本文复制引用
许玉兰,蔡年辉,陈诗,王大玮,段安安,康向阳..基于针叶性状云南松天然群体表型分化研究[J].西南林业大学学报,2016,36(5):1-9,9.基金项目
国家自然科学基金项目(31260191)资助；云南省林学一流学科建设经费资助；云南省高校林木遗传改良与繁育重点实验室开放基金资助。 （31260191）
