%0 Journal Article
%A JIANG Guo-Yun
%A JIANG Lu-Ping
%A SONG Shuang-Lin
%A WANG Jing-Yuan
%A WANG Lian-Fu
%A WANG Qi
%A ZHANG Peng
%A ZHAO Xi-Yang
%T Genetic Variance Analysis and Excellent Fruit-timber Families Selection of Half-sib <i>Pinus koraiensis</i>
%D 2018
%R 10.7525/j.issn.1673-5102.2018.05.018
%J Bulletin of Botanical Research
%P 775-784
%V 38
%N 5
%X With 48 <i>Pinus koraiensis</i> half-sib families in Naozhi Forest Farm of Linjiang Forestry Bureau, we studied the growth traits of different families in different three years. By variance analysis, all traits were significantly different(<i>P</i><0.01) among different families. The coefficients of phenotypic variation of different traits varied from 2.74%-51.39%, and the heritability of different trait was higher than 0.97. The general combining ability of tree height, diameter at breast height and cone number were ranged from -1.82 to 1.70, -7.91 to 9.99 and -14.85 to 15.15, respectively. There were significant positive correlations among tree height(0.993-0.999), and diameter at breast height(0.995-0.998) in different year. Growth traits and fruit traits were taken as index to evaluate families by the method of comprehensive evaluation of multiple traits under selected rate of 10%, five families were selected as elite families based on growth, the average tree height, diameter at the breast height were 8.02 m and 21.95 cm, and the genetic gain were 7.63% and 46.29%, respectively. Based on the fruit traits, under selected rate of 10%, five families were selected as elite families, the average coin number and thousand seed weight of elite families were 30.26 and 736.20 g, and the genetic gain were 86.49% and 1.46%, respectively. The elite families could supply materials for pedigree registration and the selected method cloud also provide theoretical basis for other fruit-timber tree species breeding.
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2018.05.018