毛白杨无性系湿心材比例的遗传分析  

Genetic Analysis of Wetwood Proportion on Clone Test Stand of Populus tomentosa

作　　者：张冬梅[1] 鲍甫成[2] 张志毅[3] 黄荣凤[2] 

机构地区：[1]上海市园林科学研究所,上海200232 [2]中国林业科学研究院木材工业研究所,北京100091 [3]北京林业大学,北京100083

出　　处：《林业科学》2005年第4期140-144,共5页Scientia Silvae Sinicae

基　　金：国家自然科学基金"纸浆材毛白杨无性系材质性状的遗传分析"(30200216)。

摘　　要：对毛白杨无性系测定林分内25个无性系150棵单株木芯试样的湿心材比例进行测定和遗传分析。结果表明:无性系间湿心材比例差异达到5%显著水平,湿心材比例的无性系重复力高达0.749,受中度遗传控制,在无性系间进行可获得良好效果;湿心材比例与木质素含量及与木材基本密度之间无相关性,对这3个性状可以进行单独选择;湿心材比例与胸径之间在1%水平上呈极显著的负表型相关性和显著的负遗传相关性,可联合选择;在所研究的25个无性系中,可选择1232#无性系,它的湿心材比例较低、木质素含量较低、材色较白,且胸径较大。25 clones 6 trees from each clone were sampled （aged 15 years） from clone test stand of Populus tomentosa.Wetwood proportion of every tree was calculated, their inheritance and variation among clones were studied. The high value of clones repeatability of wetwood proportion （0. 749） indicated that the character was under genetic control, and selection could be conducted effectively between clones. Whereas correlation analysis showed that no significantly correlation between wetwood proportion and lignin content and height, general significantly negative correlation between wetwood proportion and growth traits （diameter at breast height and volume ） were discovered.

关 键 词：毛白杨 无性系 湿心材比例 遗传分析 

分 类 号：S781.1[农业科学—木材科学与技术]