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Bulletin of Botanical Research ›› 2018, Vol. 38 ›› Issue (5): 775-784.doi: 10.7525/j.issn.1673-5102.2018.05.018

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Genetic Variance Analysis and Excellent Fruit-timber Families Selection of Half-sib Pinus koraiensis

JIANG Guo-Yun1, JIANG Lu-Ping2, SONG Shuang-Lin3, WANG Jing-Yuan3, WANG Qi3, WANG Lian-Fu3, ZHANG Peng2, ZHAO Xi-Yang2   

  1. 1. China Jilin Forest Industry Group, Changchun 130000;
    2. State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040;
    3. Linjiang Forestry Bureau of Jilin Province, Linjiang 134600
  • Received:2018-03-15 Online:2018-09-15 Published:2018-08-31
  • Supported by:
    National Key Research and Development Program of China(2017YFD0600601)

Abstract: With 48 Pinus koraiensis 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(P<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.

Key words: Pinus koraiensis, half-sib families, growth traits, furit traits, genetic gain

CLC Number: