文献类型：期刊文献

英文题名：Genotypic Variation and Genotype-by-Environment Interactions in Growth and Wood Properties in a Cloned Eucalyptus urophylla x E. tereticornis Family in Southern China

作者：Yang, Heyu[1] Weng, Qijie[2] Li, Fagen[3] Zhou, Changpin[3] Li, Mei[3] Chen, Shengkan[3] Ji, Hongxia[3] Gan, Siming[1,3]

第一作者：Yang, Heyu

通信作者：Gan, SM[1];Gan, SM[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 Trop Forestry, Key Lab State Forestry Adm Trop Forestry Res, 682 Guangshan 1 Rd, Guangzhou 510520, Guangdong, Peoples R China;[3]Chinese Acad Forestry, Res Inst Trop Forestry, Beijing, Peoples R China

年份：2018

卷号：64

期号：3

起止页码：225-232

外文期刊名：FOREST SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000433337500001)】；

基金：This work was financially supported by grants from Forestry Administration of Guangdong Province, China (2016KJCX014), and Guangdong Natural Science Foundation (2016A030310007). The authors would like to thank Kunming Wu, Juying Wu, Shiyao Peng, Changfu Hong, and Bingnan Wang for valuable cooperation in plant material establishment and maintenance, Zhaoyuan Zhang, Jingquan Lin, Yong Guo, and Xiaoli Yu for kind assistance in field trial investigation and sample collection, and Shiyu Fu for standard measurement of the wood chemical properties.

语种：英文

外文关键词：Eucalyptus; clonal repeatability; genetic correlation; clonal stability

摘要：Using a cloned Eucalyptus urophylla x E. tereticornis family, the present study estimated clonal mean repeatability, inter-trait correlation, and clone-by-site interactions for height (H) and diameter at breast height (D) across 0.5-8 years of age as well as 8-year-old wood basic density (BD8), cellulose content (CC8), hemi-cellulose content (HC8), Klason lignin content (LC8), and lignin syringyl-to-guaiacyl ratio (S/G(8)). Clonal mean repeatability estimates were 0.40-0.91 for growth traits H and D over 0.5-8 years and 0.50-0.87 for wood properties at age 8 for three separate sites (except that of 0.01 for HC8 at Yanxi) and across sites, indicating moderate to high levels of genetic control of the traits investigated. H had high positive genetic correlation with D. Growth traits (H and/or D) showed generally positive genetic correlation with BD8 and CC8 while negative with HC8 and LC8. Significant genotype-by-environment (clone-by-site) interactions were observed for most traits, suggesting that clones should be matched to sites to increase genetic gain. Our results suggest that there is potential to use E. urophylla x E. tereticornis clones to increase yield with desirable wood properties in Southern China.