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Bulletin of Botanical Research ›› 2017, Vol. 37 ›› Issue (6): 933-940.doi: 10.7525/j.issn.1673-5102.2017.06.017

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Comprehensive Evaluation of Growth and Fruit Traits of Larix olgensis Parents in Seed Orchard

ZHANG Xin-Xin1, XIA Hui1, ZHAO Xin2, ZHANG Ying2, LI Guang-Yan2, ZHANG Lei2, SUN Xiao-Yang2, HAN Dong-Hui1, ZHAO Xi-Yang1   

  1. 1. State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040;
    2. Seed Orchard of Siping, Siping 136000
  • Received:2017-03-09 Online:2017-11-15 Published:2017-11-25
  • Supported by:
    The Fundamental Research Funds for the Central Universities(2572014BA13)

Abstract: Growth and fruit traits were important evaluation criterion for tree parents in seed orchard. With 58 Larix olgensis parents clones, we studied the growth and fruit traits. By ANOVA analysis of all traits(except stem straightness, internodal distance, 0m and 1.3m bark thickness), there was significant difference among all clones. The phenotypic variation coefficients and repeatabilities ranged in 8.05%-54.97% and 0.102 3-0.744 2, respectively. Higher phenotypic variation coefficient and repeatability values were benefit for excellent clone selected and valuated. By principle component analysis, all traits were divided into four principle components(Y1, Y2, Y3 and Y4), and different clones showed different principle components values. Six clones(L59, L56, L77, L90, L92 and L87) were selected as excellent clones under a selection rate of 10%, using growth traits and fruit traits as comprehensive evaluation indexes. The selected clones showed higher Y1 principle component values with the genetic gains of 15.43%, 8.25%, and 29.73% for tree height, diameter at breath height and value, respectively.

Key words: Larix olgensis, growth traits, fruit traits, principle component analysis, comprehensive evaluation

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