文献类型：期刊文献

英文题名：Variation and selection analysis of Pinus koraiensis clones in northeast China

作者：Liang, Deyang[1] Ding, Changjun[2] Zhao, Guanghao[3] Leng, Weiwei[3] Zhang, Min[4] Zhao, Xiyang[1] Qu, Guanzheng[1]

第一作者：Liang, Deyang

通信作者：Zhao, XY[1]|[a0005305bd58d3ae0e53e]赵曦阳;

机构：[1]Northeast Forestry Univ, State Key Lab Tree Genet & Breeding, Harbin 150040, Heilongjiang, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat,State Forestry A, Beijing 100091, Peoples R China;[3]Longjing Forestry Bur, Longjing 133400, Jilin, Peoples R China;[4]Yanbian Univ, Grad Sch, Yanbian 133002, Peoples R China

年份：2018

卷号：29

期号：3

起止页码：611-622

外文期刊名：JOURNAL OF FORESTRY RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000428936400006)】；

基金：This work was financially supported by the Innovation Project of State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University) (No. C02), the Fundamental Research Funds for the Central Universities (2572015EA03), China Postdoctoral Science Foundation (2014M561315) and the National Natural Science Fund (31500549).

语种：英文

外文关键词：Genetic variation; Replication; Selection; Pinus koraiensis

摘要：Understanding genetic variation is important for efficiently selecting excellent clones and utilizing genetic resources during tree breeding. We investigated 16 growth traits of 50 32-year-old Pinus koraiensis clones. Analyses of variance showed that all the test traits differed significantly among clones. Average height, diameter at breast height (DBH), and volume of all clones were 10.41 m, 21.30 cm, and 0.148 m(3), respectively. Phenotypic coefficients of variation and repeatabilities of traits ranged from 4.37 to 48.03% and from 0.013 to 0.900, respectively. There exists significant positive correlations among heights, diameter at different heights (1.3, 3.0, 5.0 m), and volumes; genetic correlation was close to phenotype correlation. Using four growth traits (height, DBH, volume, average crown width) as indices for a comprehensive evaluation, five clones (PK 11, PK 19, PK 04, PK 14, and PK 28), whose traits scored in the top 10%, were selected as elite clones. For these clones, genetic gains in height, DBH, volume and crown height were 8.58, 13.02, 32.72 and 3.83%, respectively. These results provide important information for improving P. koraiensis breeding programs.