毛白杨优良无性系树体性状主导因子分析  

Analysis of The Main Factors of the Physical Traits of Fine Populus tomentosa Clones

作　　者：唐秀军 李军 张超英[1,2,3] 高福玲 马浩 张小国[1,2,3] 张国民 

机构地区：[1]河南省经济林和林木种苗工作站 [2]中国林业科学研究院 [3]温县国有苗圃

出　　处：《河南农业大学学报》1998年第4期385-388,共4页Journal of Henan Agricultural University

基　　金：国家"九五"攻关项目

摘　　要：对１０ａ生毛白杨无性系试验林２１个性状进行了观测与分析。结果表明，无性系之间通直度的差异不显著，材积、枝下高和圆满度的差异极显著，可望对后３个经济性状获得较好的选择效果。在主成分分析的基础上进行聚类分析，评选出了２个综合性状优良的无性系。Ten-year-old experimental plantation of Populus tomentosa clones were investigated and 21 characteristics were analysed. The results show that the difference of straightness does not exist among clones, but the differences of volume, height under branch and taper ratio of trunk are significant respectively and positive results can be expected by clonal selection for the three ecomonic traits.Based on the PCA and systemitic cluster analysis of 19 traits, 2 superior clones are selected.

关 键 词：毛白杨 无性系 经济性状 

分 类 号：S792.117[农业科学—林木遗传育种]