林业科学2013，Vol.49Issue(2)：27-32,6.DOI:10.11707/j.1001-7488.20130205
火炬松核心育种群体子代生长变异与选择
Growth Variation and Selection to the Progeny of Nucleus Breeding Population of Pinus taeda
摘要
Abstract
Progeny of 68 full-sib combinations from the first generation nucleus breeding population of loblolly pine (Pinus taeda) in Guangdong Province composed the base population of the second generation nucleus population. The height, diameter at breast height ( DBH) and single-tree volume of the second generation nucleus population were measured in 8, 10 and 15 years. The result showed that there were extremely significant differences in height, diameter at breast height (DBH) and single-tree volume among the combinations. According to the growth performance of 15-year-old progeny, eight superior female parents and four male parents were selected. They could be used for establishing a elite seed orchard or a controlled pollination seed orchard to produce genetically-improved seed. The family-mean volume at the age of 15 year was used for the combination selection indicator and 10 combinations were selected, with the average gain of 18. 94% . Seeds from re-pollination of these 10 combinations could be used to construct cutting nursery, and then cuttings from these superior full-sib families could be used for afforestation. By using combined selection, 55 individuals were selected to construct the second generation breeding population. Thirty individuals among them were selected into the second generation nucleus breeding population, remaining 25 into the second generation main breeding population.关键词
火炬松/核心育种群体/正向同型交配/生长变异/选择Key words
Pinus taeda/ nucleus breeding population/ positive assortative mating/ growth variation/ selection分类
农业科技引用本文复制引用
刘天颐,刘纯鑫,黄少伟,钟伟华,陈炳铨..火炬松核心育种群体子代生长变异与选择[J].林业科学,2013,49(2):27-32,6.基金项目
"十二五"农村领域国家科技计划专题"国外松高世代育种和种苗繁育关键技术研究与示范"(2012BAD01B0203) （2012BAD01B0203）
广东省林业科技创新专项资金项目"松杉良种选育和高效栽培技术研究与示范——松树短周期采脂林良种选育、优质栽培及采收加工技术研究与示范"(2011KJCX013-02). （2011KJCX013-02）
