沙黄松选择增益结构模式初步研究  

A Preliminary Study on Selecting the Structural Patterns of Genetic Gain of Pinus massoniana Var. shaxianensis

作　　者：周东雄 李兆丰[1] 

机构地区：[1]沙县林科所,三明市林委

出　　处：《福建林业科技》1994年第2期10-14,共5页Journal of Fujian Forestry Science and Technology

摘　　要：采用沙黄松天然林自由授粉家系７年生树干材积的材料，分析了联合选择遗传增益结构模式。结果表明：亚群体间存在极显著差异，亚群体内家系间差异不显著；联合选择增益结构模式为亚群体间７２．４４％、亚群体内家系间３．５５％、单株间２４．０１％。T he structural patterns of genetic gain through the combined selection have been analysed by adopting the volume materials of 7-year- old stems from the open pollination families of Pinus massoniana var.shaxianensis natural forest.The results demonstrate that there are ex- tremely sig nificant differences among subpopulations while the differences among the families within subpopulations are not significant.The structural patterns of genetic gain through the com- bined selection are 72.44%, 3.55%and 24.01%among subpopulations, families within subpopu-lations and single trees,respectively.

关 键 词：沙黄松 遗传增益 结构模式 

分 类 号：S791.240.5[农业科学—林木遗传育种]