杂种落叶松纸浆材优良家系选择  

Superior Family Selection of Hybrid Larch for Pulp Material

作　　者：王绪[1] 张含国[1] 张磊[1] 姜莹[1] 张振[1] 于宏影[1] 

机构地区：[1]林木遗传育种国家重点实验室(东北林业大学),哈尔滨150040

出　　处：《东北林业大学学报》2015年第4期1-4,共4页Journal of Northeast Forestry University

基　　金：林木遗传育种国家重点实验室(东北林业大学)创新项目(2013A01)

摘　　要：以黑龙江省林口县青山林场30年生杂种落叶松子代测定林中的16个家系为研究对象,测定其生长及材性性状,估算其变异系数、相关系数、遗传力及遗传增益,以筛选出优良家系。结果表明:家系间的生长与材性性状存在较丰富变异,树高、胸径以及材积变异系数较大,其中材积的变异系数最大,为21.77%,纤维素质量分数、半纤维素质量分数、木质素质量分数以及基本密度变异系数相对较小,纤维素质量分数的变异系数最小,为3.78%。生长性状与材性性状之间相关性不显著,可以进行独立选择。家系间的树高、胸径、材积以及纤维素质量分数差异显著,基本密度、半纤维素质量分数以及木质素质量分数差异不显著。材积以及纤维素质量分数的家系遗传力分别为68.4%、49.1%,受中等强度的遗传控制。综合生长与材性性状筛选出适合做纸桨材的优良家系为日3×兴8、日5×兴8和日11×石51,在20%入选率下材积和纤维素质量分数的遗传增益分别为25.0%、6.9%,3个家系材积和纤维素质量分数的均值分别高于家系平均值13.46%、1.95%。With 16 families from progeny test plantation of 30-year-old hybrid larch from Qingshan Forest Farm in Linkou County of Heilongjiang Province,we determined the growth characteristics and wood properties,and estimated coefficient of genetic variation,correlation coefficient,heritability and genetic gain to select superior families. The growth characteristics and wood properties had abundant variation between different families. The variation coefficient of tree height,DBH and volume were bigger than the cellulose content,hemi-cellulose content,lignin content and wood basic density. The variation coefficient of the volume was maximum of 21. 77%. Cellulose content variation coefficient was minimum of 3. 78%. The correlation between growth characteristics and wood properties was insignificant,which can be chosen independently. The differences of tree height,DBH,volume and cellulose content were significant between the families,and the difference of wood basic density,hemi-cellulose content and lignin content was insignificant between the families. The heritability of tree volume and cellulose content were 68. 4% and 49. 1%,respectively,under above middle-heritability control. Based on growth and wood traits,three families were selected for pulpwood production： J3 × X8（ L. kaempferi 3 × L. gmelinii8）,J5 × X8（L. kaempferi 5 × L. gmelinii 8） and J11 × S51（L. kaempferi 11 × L. olgensis 51）. The genetic gains of the tree volume and cellulose content were 25. 0% and 6. 9%,respectively,when the selection rate was 20%. The average of volume and cellulose content of three families were 13. 46% and 1. 95% higher than those of the average of all families,respectively.

关 键 词：杂种落叶松 生长性状 纸桨材 家系选择 

分 类 号：S722.5[农业科学—林木遗传育种]