滇西地区滇橄榄自然居群种实形态多样性与子代苗期生长变异  

Phenotypic diversity of fruits,seeds and offspring seedlings in natural populations of Phyllanthus emblica from Western Yunnan

作　　者：尹瑞萍[1] 黄佳聪[1] 尹光顺[1] 吴建花[1] 

机构地区：[1]保山市林业技术推广总站,云南保山678000

出　　处：《云南大学学报（自然科学版）》2018年第1期174-182,共9页Journal of Yunnan University(Natural Sciences Edition)

基　　金：云南省第二批"云岭产业技术领军人才"培养基金(2015D30);保山市第三批中青年学术和技术带头人培养基金(2014CJ026)

摘　　要：在全面调查滇西地区滇橄榄自然分布区的基础上,对9个自然居群的滇橄榄果实、种子、子代幼苗等12个表型性状进行比较分析,揭示居群间和居群内的表型多样性.结果表明:滇橄榄种实和子代幼苗表型性状在居群间与居群内存在极其丰富的变异,12个性状在居群间、居群内均达显著(P<0.05)或极显著(P<0.01)差异;其平均表型分化系数为20.31%,居群内变异(50.81%)远高于居群间(12.67%),说明居群内变异是滇橄榄变异的主要来源.种子和幼苗性状与居群地理、环境因子及母树生长大多相关显著,而果实性状则与之相关不显著(P≥0.05);居群间表型性状的欧式距离与地理距离相关不显著.研究结果可为滇橄榄良种选育工作奠定基础,亦为制定持续健康的产业发展对策提供科学依据.On the basis of the full survey for natural distribution of Phyllanthus emblica in Western Yunnan, fruits were collected from its 9 natural populations, and 12 phenotypic traits of fruit, seed and offspring seedling were investigated so as to assess phenotypic diversity among these populations.The results showed that variations in phenotypic traits of the fruits, seeds and offspring seedlings were very rich within and among populations, there were significant differences among populations and between individuals within populations.There was significant difference in all 12 traits among populations and within populations.The mean phenotypic differentiation coeffi- cient of these traits was 20.31% ,and the variation within populations was approximately three times higher than that among populations, which indicated that variance within population was the main source of the phenotypic variation for the species.Seed and seedling traits were mostly in significant correlation with geographical and envi- ronmental factors, and growth of the mother trees of these populations, while fruits traits were not remarkably correlated with these factors.No significant relationship was found between geographic distances and Euclidean distances calculated from all phenotypic traits.These findings will lay a foundation for improved breeding of P. emblica, and provide scientific evidences for of this species. making good strategies for sustainable and healthy industrial development

关 键 词：滇橄榄 自然居群 种实性状 子代幼苗 表型多样性 

分 类 号：S722.8[农业科学—林木遗传育种]