林芝地区光核桃种子表型性状变异的影响因素分析  

Analysis of influencing factors on phenotypic variation of Prunus mira seeds in Nyingchi Prefecture

作　　者：刘会芳 鹿鑫 关法春 吴玉德[1] 宗宪春[2] 桑利群[4] LIU Hui-fang;LU Xin;GUAN Fa-chun;WU Yu-de;ZONG Xian-chun;SANG Li-qun(School of Life Science, Jiamusi University, Jiamusi 154007, P. R. C.;School of Life Science and Technology, Mudanjiang Normal University, Mudanjiang 157012 P. R. C.;Jilin Academy of Agricultural Sciences, Changchun, Jilin 130033, P. R. C.;Tibet Agriculture and Animal Husbandry College, Linzhi 860000, P. R. C.)

机构地区：[1]佳木斯大学生命科学学院,黑龙江佳木斯154007 [2]牡丹江师范学院生命科学与技术学院,黑龙江牡丹江157012 [3]吉林省农业科学院,吉林长春130033 [4]西藏农牧学院,西藏林芝860000

出　　处：《西南民族大学学报（自然科学版）》2019年第4期343-348,共6页Journal of Southwest Minzu University(Natural Science Edition)

基　　金：国家自然科学基金项目(31660552);吉林省农业科技创新工程项目(CXGC2018ZY026)

摘　　要：旨在通过光核桃种子表型性状变异特点来揭示影响表型性状遗传变异的因素,更好地开发及利用光核桃资源.对林芝地区50处的光核桃种子样本的横径、厚度、纵径、果形指数及单粒重几项形态学指标进行研究.结果表明:各表型性状P值均小于0.01,说明光核桃种子的表型性状产生了显著的遗传分化,其中,单粒重的变异系数最高(28. 71%),厚度的变异系数最低(10.43%);聚类分析后可将不同样本种质资源整体分为3个类群,但不同样本的形态分类与地理来源无一致关系,而海拔高度与光核桃种子的各表型性状高度相关,同时果形指数及单粒重与果肉可溶性固形物高度相关.因此,西藏林芝地区光核桃在表型性状上存在由海拔梯度引起的变异,而非地理区隔因素.The purpose of this study was to reveal the factors influencing the genetic variation of phenotypic traits through the phenotypic traits variation characteristics of Prunus mira seeds, so as to better develop and utilize the Prunus mira phenotypic resources. The cross diameter, thickness, longitudinal diameter, fruit shape index and single grain weight of Prunus mira seed samples were studied. The results showed that the P values of all phenotypic traits were less than 0.01, indicating that the phenotypic traits of Prunus mira seeds had significant genetic differentiation. After clustering analysis, the germplasm resources of different samples can be divided into three groups, but the morphological classification of different samples is not consistent with the geographical source, while the altitude is highly correlated with the phenotypic traits of Prunus mira seeds. At the same time, fruit shape index and single grain weight were highly correlated with soluble solids in pulp. Therefore, the phenotypic traits of Prunus miras in Nyingchi prefecture of Tibet might be caused by elevation gradient rather than geographical factors.

关 键 词：光核桃 种子 表型性状 

分 类 号：S18[农业科学—农业基础科学] S3