文献类型：期刊文献

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

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

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

第一作者：Deyang Liang

机构：[1]Longjing Forestry Bureau,Longjing 133400,Jilin,People’s Republic of China;[2]State Key Laboratory of Tree Genetics and Breeding,Research Institute of Forestry,Chinese Academy of Forestry,Key Laboratory of Tree Breeding and Cultivation,State Forestry Administration,Beijing 100091,People’s Republic of China;[3]Longjing Forestry Bureau,Longjing 133400,Jilin,People’s Republic of China;[4]The Graduate School of Yanbian University,Yanbian 133002,People’s Republic of China

年份：2018

卷号：29

期号：3

起止页码：609-620

中文期刊名：林业研究：英文版

收录：CSTPCD;;Scopus;CSCD:【CSCD2017_2018】；

基金：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);the National Natural Science Fund(31500549)

语种：英文

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

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

分类号：S7

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 m3, respectively. Phenotypic coefficients of variation and repeatabilities of traits ranged from 4.37 to48.03% 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(PK11, 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.
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 m3, respectively. Phenotypic coefficients of variation and repeatabilities of traits ranged from 4.37 to48.03% 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(PK11, 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.