兴安落叶松种子园半同胞子代测定及优良家系选择

摘要

对兴安落叶松无性系种子园自由授粉子代测定林(31年生)36个家系的树高、胸径、材积进行分析的结果表明：不同家系间树高、胸径、材积性状差异显著。其中2号为最优家系，其家系群体树高、胸径、材积平均值分别大于对照平均值的7%、14%、38%；以材积性状为重要指标，对参试家系进行选择，选出3个优良家系，其树高、胸径、材积预期遗传增益分别达到0.9％、1.7％、4.5％。%To utilize modern larch clones seed orchard free pollination progeny test (30 years) 37 family tree height, DBH and volume of the analysis, the results show that tree height, DBH and volume characters of different family were significant difference.The No. 2 for the best family. The average tree height, DBH and volume of the family group is greater than the contrast average of 7%, 14% and 7% respectively ; Choose three good family in the line of volunteers thought volume character as important indicators.The tree height, DBH and volume expected genetic gain of 0.9%, 0.9%, 0.9% respectively.