Variance Analysis of Growth Traits of 51 Pinus koraiensis Seedling Families

doi:10.7525/j.issn.1673-5102.2018.04.014

Abstract

Abstract: In order to obtain faster growth and high survival rate Pinus koraensis offspring families, with 51 P.koraensis families in Kaishantun Forest Farm in Longjing City, Jilin Province as materials, and studied their growth traits(seedling height and ground diameter), rate of survival and preserving rate. By analysis of variance, the traits were significantly different(P<0.05) among different families except rate of survival at block-family interaction. The coefficients of phenotypic variation of all the traits ranged from 6.85%-29.89%. The heritabilities of different traits ranged from 0.51 to 0.80 except for the ground diameter in 4 a seedlings and rate of survival, and other traits showed their higher heritability. High variation and heritability values were beneficial to evaluation and selection of excellent families. Correlation analysis results showed that there were significantly positive correlations among all the traits. Using the method of multiple-traits evaluation, with a selection rate of 10%, family PK29, PK38, PK21, PK37 and PK48 were selected as elite families, and the genetic gains of seedling height and ground diameter were 10.08%-2.33%, respectively. The study can provide theoretical basis for evaluating Pinus koraiensis.

Key words: Pinus koraiensis, variance, heritability, genetic gain

CLC Number:

S791.247

ZHAO Guang-Hao, LENG Wei-Wei, ZHANG Teng, XU Lian-Shun, JIN Xing, FENG Liang, LI Hong-Bin, ZHAO Xi-Yang. Variance Analysis of Growth Traits of 51 Pinus koraiensis Seedling Families[J]. Bulletin of Botanical Research, 2018, 38(4): 590-596.

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