文献类型：期刊文献

英文题名：Full-diallel-based analysis of genetic parameters for growth traits in Japanese larch (Larix kaempferi)

作者：Dong, Leiming[1,2] Xie, Yunhui[1,2] Sun, Xiaomei[1,2]

第一作者：Dong, Leiming

通信作者：Sun, XM[1];Sun, XM[2]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Xiangshan Rd, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Xiangshan Rd, Beijing 100091, Peoples R China

年份：2020

卷号：51

期号：2

起止页码：261-271

外文期刊名：NEW FORESTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000515175900004)】；

基金：This work was supported by the Forestry Industry Research Special Funds for Public Welfare Projects (201504104).

语种：英文

外文关键词：Japanese larch; Diallel; GCA; SCA; Reciprocal effect

摘要：Genetic parameters were estimated for tree height (H), diameter at breast height (DBH), and volume from a progeny trial conducted in Japanese larch (Larix kaempferi) in Liaoning, China. A 12 x 12 full-diallel mating design with selfing was adopted, and data were collected in 2005 and 2014 at 20 and 29 years after planting. Based on an analysis of 55 of 144 potential crosses, general combining ability (GCA) and specific combining ability (SCA) were statistically significant for these traits. Variance was larger in SCA than in GCA in 2005, and the ratio of SCA to GCA was lower in 2014. Estimates of narrow-sense heritability were low to moderate, ranging from 0.10 for DBH to 0.14 for H, in 2005 and decreased in all traits except H as the trees aged. The reciprocal effect was not significant. Selfed progeny did not show severe inbreeding depression for survival or growth. The results of this study will facilitate the development of breeding and deployment strategies to increase the efficiency of genetic improvement in Japanese larch.