广西植物2017，Vol.37Issue(8)：1019-1024,6.DOI:10.11931/guihaia.gxzw201607008
马尾松不同改良水平子代群体遗传多样性研究
Genetic diversity of the progeny population of different levels of improvement in Pinus massoniana
摘要
Abstract
The effects of genetic improvement on the genetic diversity of Pinus massoniana forest were studied, by using three improved levels of progeny of seed production populations as the research material, and the natural population as the control.The genetic diversity of the experimental groups was analyzed by sixteen pairs of SSR primers.The results were as follows: Shannon's information index (I) of natural populations, progeny of seed production area, offspring of Generation 1 seed orchard and Generation 1.5 seed orchard of P.massoniana were 0.53, 0.53, 0.53 and 0.46;observed heterozygosity (Ho) 0.36, 0.36, 0.39, 0.35 respectively;expected heterozygosity (He) 0.32, 0.32, 0.33, 0.27 respectively.There were no significant difference among the offsprings of seed production areas of Generation 1 and Generation 1.5 seed orchards of P.massoniana on the three main genetic diversity indexes.It showed that the genetic diversity of improved varieties was not affected significantly by the improved selection in the process of genetic improvement of P.massoniana in Guangxi.Compared with the plantations and natural forest, we knew that there was no significant decrease in the three main indexes of the improved varieties, which indicated that the three kinds of main populations in Guangxi had good group buffer capacity and individual buffer capacity.The results of the study have important significance for the scientific development of breeding strategy in P.massoniana, and provide important data support for the research of high generation breeding of P.massoniana.关键词
马尾松/改良水平/生产群体/遗传多样性/种子园Key words
Pinus massoniana/improved level/production populations/genetic diversity/seed orchard分类
农业科技引用本文复制引用
罗群凤,杨章旗,颜培栋,冯源恒,李火根..马尾松不同改良水平子代群体遗传多样性研究[J].广西植物,2017,37(8):1019-1024,6.基金项目
国家科技支撑计划项目(2015BAD09B0102-2) （2015BAD09B0102-2）
广西八桂学者专项项目(2011A015) （2011A015）
广西自然科学基金(2014GXNSFBA118078) （2014GXNSFBA118078）
广西林科院基本科研业务费专项项目(林科201617号)[Supported by National Key Technology R & D Program of China (2015BAD09B0102-2) （林科201617号）
Guangxi Special Fund for Bagui-Scholar(2011A015) （2011A015）
Guangxi Natural Science Foundation(2014GXNSFBA118078) （2014GXNSFBA118078）
Basic Scientific Research Fund of Guangxi Forestry Research Institute (201617)]. （201617）
