文献类型：期刊文献

英文题名：Genetic analysis of the heartwood properties and Genotype x Environment Interaction effect in Castanopsis hystrix half-sib families

作者：Liu, Guangjin[1,2,3] Hou, Jia[4] Tian, Zuwei[1,2,3] Shen, Wenhui[5] Meng, Fengli[1,2,3] Lu, Pu[1,2,3] Xie, Xianjin[1,2,3] Xu, Jianmin[6]

第一作者：Liu, Guangjin

通信作者：Xu, JM[1]

机构：[1]Chinese Acad Forestry, Expt Ctr Trop Forestry, Keyuan Rd 73, Pingxiang 532600, Peoples R China;[2]Guangxi Youyiguan Forest Ecosyst Res Stn, Keyuan Rd 201, Pingxiang 532600, Peoples R China;[3]Youyiguan Forest Ecosyst Observat & Res Stn Guangx, Keyuan Rd 201, Pingxiang 532600, Peoples R China;[4]Guangxi Vocat Coll Technol & Business, Zhongyao Rd 15, Nanning 53008, Peoples R China;[5]Guangxi Forestry Res Inst, Yongwu Rd 23, Nanning 530002, Peoples R China;[6]Chinese Acad Forestry, Res Inst Trop Forestry, Guangshan 1st Rd 682, Guangzhou 510520, Peoples R China

年份：2024

卷号：553

外文期刊名：FOREST ECOLOGY AND MANAGEMENT

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001165379300001)】；

基金：This research was funded by the Guangxi Natural Science Foundation Project (Project No.:2023GXNSFAA026497) , the Science Fund of the Tropical Forestry Experimental Center of the Chinese Academy of Forestry (Project No. RL-2020-01) , and the special fund for basic scientific research business expenses of the Chinese Academy of Forestry (item number: CAFYBB2022MA007) .

语种：英文

外文关键词：Castanopsis hystrix; Heartwood; Wood color; Genetic gain; Genotype by environment interaction

摘要：Heartwood are mainly used as Castanopsis hystrix valuable wood, which play a vital role in determining the quality of wood for sales, value assessment, and consumption. There are two defects in the heartwood produced by C. hystrix commercial forests: a low proportion of heartwood, reducing the output of high-value wood, and the uneven color of the heartwood from red to reddish-brown, affecting its visual appearance and decorative performance. As these two defects seriously influence the quality of C. hystrix heartwood, breeding of high-yield and high-quality heartwood varieties is critical. The present study examined 20-year-old C. hystrix forests in Yulin, Liuzhou, and Pingxiang counties in China. Through analysis of the proportion, density, brightness L* , chroma a* , and chroma b* of heartwood, genetic variation in each trait was described, genetic parameters were estimated, and the genotype by environment interaction effect was clarified. The average value of the above traits were 34.76%, 0.67 g/cm(3), 52.22, 13.90, and 17.25, respectively. The results of the joint three-site variance analysis reveal that heartwood proportion, density, chroma a* , chroma b* have significant (p < 0.05) or extremely significant (p < 0.01) genotype, environment, and their interaction effects, with family heritability values of 0.25, 0.23, 0.31, and 0.54, respectively. Based on the BLUP-GGE biplot of single and multiple traits, the families with strong adaptability and stable genetics were selected. The average genetic gains in heartwood proportion, density, chroma a* , and chroma b* from families 7, 8 and 9 were 5.83%, 0.02%, 1.04%, and 3.37%, respectively. The three families selected in this study were vital for promotion and utilization, providing a theoretical foundation for the innovation of C. hystrix germplasm and precise improvement of wood quality in South China.