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植物研究 ›› 2012, Vol. 32 ›› Issue (3): 284-289.doi: 10.7525/j.issn.1673-5102.2012.03.007

• 论文 • 上一篇    下一篇

长白落叶松群体遗传变异及优良家系选择的研究

徐悦丽;张含国*;姚宇;张磊;刘灵;王燕红   

  1. 东北林业大学,哈尔滨 150040
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-05-20 发布日期:2012-05-20
  • 通讯作者: 张含国
  • 基金资助:
     

Genetic Variation on Dominant and Inferior Tree Populations and Family Selection of Larix olgensis Henry

XU Yue-Li;ZHANG Han-Guo*;YAO Yu;ZHANG Lei;LIU Ling;WANG Yan-Hong   

  1. Northeast Forestry University,Harbin 150040
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-05-20 Published:2012-05-20
  • Contact: ZHANG Han-Guo
  • Supported by:
     

摘要: 以黑龙江省林口县青山林场21年生长白落叶松(Larix olgensis Henry)异地保存林为材料,分析白刀山种源优良木和劣等木群体的生长变异情况。结果发现优势木群体和劣等木群体差异不显著。树高、胸径、材积都存在丰富的变异,其中变异系数最大的是材积,其次是胸径,最小的是树高,其变异系数分别为46.24%、19.82%和12.25%;优势木群体树高、胸径、材积的变异系数分别是12.98%、20.77%和49.36%;劣等木群体树高、胸径、材积的变异系数分别是11.47%、18.79%和43.16%。同一性状树高、胸径、材积优势木群体变异高出劣等木群体变异系数分别为1.51%、1.98%和6.2%。方差分析表明家系间差异显著,选择了856、859、563、552、567、864号6个优良家系,优良木与劣等木群体各占3个;6个家系平均值分别超过优势木群体平均值和劣等木群体平均值0.017 7和0.013 6 m3。按照各自群体10%入选率,则遗传增益分别是38.74%和30.04%。

关键词: 优势木群体, 劣等木群体, 遗传变异, 家系选择

Abstract: Taking the off-site preservation forest 9119B of Larix olgensis in Qinshan forestry centre in Linkou, Heilongjiang province as the materials, the growth variation of the dominant and inferior tree populations were analyzed. The results showed that there was no significant difference between the dominant and inferior tree populations, while rich variations existed in height, diameter and volume between these populations. The volume variation coefficient was the richest one, followed by the diameter and the least is the height, the coefficients were 46.24%, 19.82% and 12.25%, respectively. These three coefficients of dominant population were 12.98%, 20.77% and 49.36%, while the inferior population was 11.47%, 18.79% and 43.16%. The variations of the dominant tree population were respectively 1.51%, 1.98% and 6.2% higher than the inferior ones at height, diameter and volume. There were significant differences between these populations by the variance analysis. According to the analysis, we selected 6 families (856, 859, 563, 552, 567, 864), 3 were dominant tree populations and 3 were inferior tree populations. The average volume of these 6 families were 0.022 3, 0.018 6, 0.016 8, 0.016 4, 0.016 2 and 0.015 9 m3 bigger than the average values of dominant population, while 0.018 2, 0.014 5, 0.012 7, 0.012 3, 0.012 1 and 0.011 7 m3 bigger than the inferior ones. According to the 10% selection rate among the dominant and inferior tree populations, the variation gains were 59.33%, 65.18%, 74.91%, 40.64%, 40.94% and 45.34%, respectively.

Key words: dominant tree population, inferior tree population, genetic variation, family selection

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