摘要
对18年生马尾松种子园自由授粉子代的生长性状、树干通直度和木材密度进行研究分析,以选择速生、优质的家系。结果表明:不同家系间在树高、胸径、材积、树干通直度和木材密度上存在显著差异。以材积、树干通直度和木材密度为主要指标,选择出16个优良家系,其单株材积均值0.222 4 m3/株,遗传增益13.129 7%;树干通直度均值3.47,遗传增益2.426 0%;木材密度均值0.332 9g/cm3,遗传增益-1.114 6%。
In order to select superior families with fast growth and high quality in pinu smassoninana seed orchard, the growth characters, stem-straightness and wood density of 18-year open-pollinated progenies were studied. Results showed that there were significant differences between families in tree height, DBH, individual volume, stem-straightness and wood density, respectively. Taken tree volume, stem-straightness and wood density as main selection traits, 16 superior chones were selected. The average volume of the 16 superior families was 0.222 4 m3 per individual, and genetic gain was 13.129 7 %. The average stem-straightness was 3.47, and genetic gain was 2.426 0 %. The average wood density was 0.332 9g/cm3, and ge- netic gain was - 1.114 6 %.
出处
《三明学院学报》
2015年第2期7-11,共5页
Journal of Sanming University
基金
福建省林木种苗科技攻关四期项目(闽林科[2013]1号)
福建省林业厅科技示范项目(2010)
龙岩市科技局项目"马尾松纸浆材定向选育和二代种子园营建技术研究"(2008LY47)
关键词
马尾松
种子园
材积
树干通直度
木材密度
选择
Pinus massonimma
seed orchard
tree volume
stem-straightness
wood density
selection
