文献类型：期刊文献

英文题名：Quantitative genetics of cold hardiness and growth in Eucalyptus as estimated from E. urophylla × E. tereticornis hybrids

作者：He, Xudong[1,2] Li, Fagen[1] Li, Mei[1] Weng, Qijie[1] Shi, Jisen[2] Mo, Xiaoyong[3] Gan, Siming[1]

第一作者：He, Xudong

通信作者：Shi, J.

机构：[1] Research Institute of Tropical Forestry, National Key Laboratory of Forest Tree Genetics and Breeding, Chinese Academy of Forestry, Longdong, Guangzhou 510520, China; [2] The Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, China; [3] College of Forestry, South China Agricultural University, 284 Block, Wushan Street, Guangzhou 510642, China

年份：2012

卷号：43

期号：3

起止页码：383-394

外文期刊名：New Forests

收录：EI(收录号：20121714969823);Scopus(收录号：2-s2.0-84859974076)

基金：Acknowledgments This work was financially supported by grants from National Program of High Technology Development of China (2011AA100202), and the Ministry of Finance of China through a specific program for national non-profit scientific institutions (RITFKYYW2010-04). The authors thank Kunming Wu and Juying Wu for kind assistance in control pollination and seedling raising as well as Jianwen Li, Shuzhong Li and Wenge Lin for valuable cooperation in field trial establishment and maintenance. Zhaoyuan Zhang and Yong Guo helped with field investigations. Special thanks are also due to Roger Arnold and anonymous reviewers for their valuable comments on the manuscript.

语种：英文

外文关键词：Additives - Forestry - Growth (materials)

摘要：Interspecific hybrids of Eucalyptus urophylla S. T. Blake × E. tereticornis Smith were used for quantitative genetic analysis of cold hardiness (CH) and growth traits height (H), diameter at breast height (D) and volume (V) at 0.5, 1.5, 2.5 and 4 years of age. The effect of E. tereticornis male variance was significant (P 4, and E. urophylla female × E. tereticornis male interaction was significant for 0.5- and 1.5-year-old growth and CH except for CH0.5, whereas E. urophylla female effect was not significant for the majority of traits analyzed. Both additive and dominance gene action were present in the genetics of all the traits measured at most ages, indicating that those traits may be improved by hybrid breeding. The σD2/σA2 ratios tended to decline after 1.5 years of age in CH and growth traits, implying that breeding value predictions derived from older performance might be more reliable. Estimates of narrow-sense heritability (h2) for CH and growth ranged from 0.03 ± 0.05 to 0.28 ± 0.13, depending on trait and age. Additive genetic correlations between CH and V were 0.28 ± 0.48 and 0.69 ± 0.30 at ages 1.5 and 2.5, respectively, suggesting that selection for growth would cause a favorable increase in cold hardiness in E. urophylla × E. tereticornis hybrids. ? 2011 Springer Science+Business Media B.V.