文献类型：期刊文献

英文题名：Genetic Parameter Estimates for the Growth and Morphological Traits of Castanopsis hystrix Families and the Genotype x Environment Interaction Effects

作者：Liu, Guangjin[1,2] Tian, Zuwei[1] Jia, Hongyan[1] Shen, Wenhui[3] Li, Zuhe[1,4,5] Tang, Li[1,4,5] Zhao, Hongpeng[1,4,5] Xu, Jianmin[2]

通信作者：Xu, JM[1]

机构：[1]Chinese Acad Forestry, Expt Ctr Trop Forestry, Pingxiang 532600, Peoples R China;[2]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China;[3]Guangxi Forestry Res Inst, Nanning 530002, Peoples R China;[4]Guangxi Youyiguan Forest Ecosyst Res Stn, Pingxiang 532600, Peoples R China;[5]Youyiguan Forest Ecosyst Observat & Res Stn Guangx, Pingxiang 532600, Peoples R China

年份：2023

卷号：14

期号：8

外文期刊名：FORESTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001056299500001)】；

基金：We would like to express our sincere appreciation to Jie Zeng for his guidance on the research proposal and manuscript revisions, and to Chunsheng Wang for his guidance on data processing.

语种：英文

外文关键词：Castanopsis hystrix; heritability; genetic gains; genotype x environment interaction effect

摘要：Castanopsis hystrix, a timber resource from Southeast Asia, is characterized by rapid growth and high yield, but plantation quality and efficiency improvements are required. Twenty-year-old C. hystrix experimental forests in Yulin, Liuzhou, and Pingxiang in Guangxi Province, China, comprising 21 open-pollinated half-sib families, were used in this study. Genetic variations in the growth (tree height, diameter at breast height (DBH), and volume (V)) and morphological (height to live crown base (HCB), crown width (CW), and branch angle) traits were assessed, and the genetic parameters were estimated to clarify the genotype x environment interaction effects. The average values for the tree height, DBH, V, HCB, CW, and branch angle were 16.33 m, 17.25 cm, 0.21 m(3), 6.68 m, 2.15 m, and 45.45 degrees, respectively. The most important sources of variance for the tree height, DBH, V, and HCB were the block and family, whereas the location, family, and family x location had significant impacts on the tree height, DBH, V, and HCB (p < 0.01). The family heritability for each trait was 0.35, 0.38, 0.62, and 0.19, respectively. Excellent families with strong adaptability and genetic stability were identified using BLUP-GGE biplots for single and multiple traits. The results provide a theoretical basis for the efficient cultivation of C. hystrix in South China.