文献类型：期刊文献

英文题名：Long-term growth variation and selection of geographical provenances of Cunninghamialanceolata (Lamb.) hook

作者：Wu, Hanbin[1,2] Duan, Aiguo[1,2,3] Zhang, Jianguo[1,2,3]

第一作者：Wu, Hanbin

通信作者：Duan, Aiguo|[a0005e4dcad4176ab110b]段爱国;

机构：[1] Key Laboratory of Forest Silviculture of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China; [2] State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China; [3] Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China

年份：2019

卷号：10

期号：10

外文期刊名：Forests

收录：EI(收录号：20194207561067);Scopus(收录号：2-s2.0-85073464821)

语种：英文

外文关键词：Cluster analysis - Genes - Growth (materials)

摘要：In order to understand the long-term growth variation of Chinese fir's geographical provenances and promote long-term genetic improvement, the experimental provenance forest of Chinese fir planted in 1981was taken as a research object.The provenances originated fromsoutheastern China. The study measured each diameter at breast height (DBH) and tree height at 5, 6, 8, 12, and 33 years of age and analyzed the genetic variation of major growth traits of trees withdifferent provenances at different forest ages. Additionally, the study analyzed the geographical variation of Chinese fir by using the trend surface and principal component analysis (PCA) and evaluated the long-term selection effect of provenance by using juvenile-mature correlation and cluster analysis. The heritability of the DBH, treeheight, and volume of Chinese fir with different provenances reached 0.35-0.76, and with increasing forest age, the heritability of each trait showed a rising and gradually stabilizing trend. There were obvious differences in geographical variation patterns among the tested provenances, and both the DBH and the tree height growth patterns are two-way gradients. This variation pattern is associated with climatic conditions in different regions, and the factors limiting the growth difference of Chinese fir may be the mean temperature in winter and the precipitation in autumn and winter. An early selection age has a significant effect on shortening the timber production cycle of Chinese fir. The selection of trees aged between 6 and 12 years is more conducive to improving the efficiency of the genetic improvement of Chinese fir. The 42 excellent provenances selected fromthe 33-year-oldmatureChinese fir forests have a larger increase in growth than treeswith local provenances, which are concentrated in the Wuyi and Xuefeng mountains and are suitable for plantation in the Guangxi Zhuang Autonomous Region and surrounding areas. ? 2019 by the authors.