南京林业大学学报（自然科学版）2011，Vol.35Issue(2)：8-14,7.DOI:10.3969/j.issn.1000-2006.2011.02.002
基于马尾松测交系子代的生长、干形和木材密度的配合力分析
Genetic analysis on combining ability of growth, stem form and wood basic density of Pinus massoniana by testcross mating design
摘要
Abstract
The genetic effects of GCA and SCA were estimated for growth, stem form and wood basic density effects for using the 14-year-old full-sib progeny of non-selected Pinus massoniana in a testeross mating design. The results showed that the GCA and SCA effects were significant and full-sib family heritability ranged from 0. 746 to 0. 908 for DBH. height, wood basic density and dry biomass accumulation which indicated these traits were under strong genetic control. Additive effects played a major role for DBH, volume, stem straightness, wood basic density and dry bimoass. Whereas dominance was next genetic control for these traits. Height appeared to be equally subjected to both dominance effect and additive effect, while stem straightness was complete controlled by additive effect. The statistical analysis showed that GCA of 1134, 1127 and 5906 from southeast distribution range of Chinese red pine, were positive and large for DBH, height and wood dry biomass. GCA of 3203, which grew slowly and originated from northern Anhui, was the largest for wood basic density. Among the nine female parents, the GCA of 5476, 5158 and 3205 was large for DBH, height, dry biomass and trunk straightness, while the GCA of 5476 and 5158 was lower than 5910 and 3205 which had large GCA for wood basic density. It was not found that GCA of growth and wood basic density was closely related to latitude of habitat. SCA did not show correspondence with GCA, and varied among traits and crosses. Seven crosses were selected according to individual dry biomass exceeding 20 ％ of the mean and the score of trunk straightness above 4, which could obtain practical genetic gain about 22.68 ％-67.34 ％ and 20.25 ％-60.13 ％ respectively.关键词
马尾松测交系/树干通直度/木材基本密度/一般配合力/特殊配合力Key words
Pinus massoniana testcross/ trunk straightness/ wood basic density/ general combining ability (GCA)/ special combining ability (SCA)分类
农业科技引用本文复制引用
刘青华,金国庆,储德裕,秦国峰,周志春..基于马尾松测交系子代的生长、干形和木材密度的配合力分析[J].南京林业大学学报（自然科学版）,2011,35(2):8-14,7.基金项目
"十一五"国家科技支撑计划(2006BADO1A1403) （2006BADO1A1403）
国家自然科学基金项目(30872041) （30872041）
浙江省林木种业重点创新团队项目 （）
