长白落叶松群体遗传变异及优良家系选择的研究  

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

作　　者：徐悦丽[1] 张含国[1] 姚宇[1] 张磊[1] 刘灵[1] 王燕红[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《植物研究》2012年第3期284-289,共6页Bulletin of Botanical Research

基　　金：东北林木良种基地种质资源现状调查(2007FY110400-3)

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%。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 an- alyzed. The results showed that there was no significant difference between the dominant and inferior tree popula- tions, while rich variations existed in height, diameter and volume between these populations. The volume varia- tion 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. Ac- cording to the analysis, we selected 6 families （856, 859,563,552,567, 864）, 3 were dominant tree popula- tions 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% selec- tion 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.

关 键 词：优势木群体 劣等木群体 遗传变异 家系选择 

分 类 号：S722.5[农业科学—林木遗传育种]