杉木无性系主要经济性状遗传变异和无性系选择  

Genetic Variation and Selection for Main Economic Traits of Cunninghamia lanceolata Clone

作　　者：何贵平[1] 林阳峰 程亚平 徐肇友 曹高铨 王帮顺 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400 [2]福建省邵武市林业局,福建邵武35400 [3]浙江省庆元县庆元林场,浙江庆元323805 [4]浙江省龙泉市林业科学研究院,浙江龙泉323700

出　　处：《浙江林业科技》2015年第1期65-67,共3页Journal of Zhejiang Forestry Science and Technology

基　　金：国家"十二五"科技支撑项目"杉木三代育种技术研究与示范(2012BAD01B0201)";浙江省"十二五"农业新品种选育竹木育种重点项目"杉木高生产力优质新品种选育及示范(2012C12908-11)"的部分内容

摘　　要：对福建省邵武市35个15年生杉木无性系试验林的树高、胸径、材积和木材基本密度4个主要经济性状进行了测定和分析,并采用指数选择法进行了优良无性系选择。结果表明:4个主要经济性状在无性系间达极显著差异水平,且有较高重复力和中等的变异系数;树高、胸径、材积3个生长性状间的遗传相关均为密切正相关,3个生长性状与木材密度间则均为弱度遗传负相关。采用材积和木材密度两个性状,应用选择指数选出7个优良无性系,它们在木材密度基本保持试验群体平均水平的情况下,材积比试验群体平均值大48.17%,比试验对照大105.45%。Determinations were made on four economic traits, such as tree height, DBH, wood volume and density of 35 clones of 15-year Cunninghamia lanceolata plantation in Shaowu, Fujian province. Fine clones were selected from them by index selection. The results showed that the four traits had significant difference among tested clones, with high repeatability and moderate variable coefficient. It had close positive genetic correlation among tree height, DBH and wood volume, but these traits had negative relation with wood density. Seven fine clones were selected by index method with wood volume and density. Their wood volume increased by 48.17% and 105.45% to experiment CK of the mean one of tested clones and of the control.

关 键 词：杉木 无性系 主要经济性状 遗传相关 无性系选择 

分 类 号：S718.46[农业科学—林学]