杉木优树自由授粉子代测定及优良家系选择  

Half-sib Progeny Test of Plus Tree and Superior Family Selection of Cunninghamia lanceolata

作　　者：罗建勋[1] 吴春艳[2] 王国良 辜云杰[1] 文吉富 钱伟 

机构地区：[1]四川省林业科学研究院,四川成都610081 [2]四川省林木种苗站,四川成都610081 [3]富顺县国营林场,四川富顺643200

出　　处：《西南林学院学报》2009年第4期1-5,共5页Journal of Southwest Forestry College

基　　金：国家林木种质资源"基本库"标准化整理整合与共享(2005DKA21003-02)项目资助;"十一五"林木;花卉基因资源发掘与种质创新利用研究(2006BAD13B07)项目资助;四川优良林木种质资源基因库建设;四川省植物资源共享平台建设项目资助;林木种质资源及相关数据信息项目资助

摘　　要：对四川省国营富顺林场收集的全省统一编号的杉木24年生优树自由授粉子代测定林进行调查,分析45个家系间生长性状的差异性和相关性,在对比分析、方差分析基础上判定家系优劣,并进行遗传参数与遗传增益估算。结果表明:树高、胸径和材积在家系间存在极显著差异;材积受中等强度的遗传力控制,树高和胸径受较弱的遗传力控制,表明材积受遗传控制更为明显;以材积性状作为主要指标,同时兼顾树高、胸径指标,对参试家系进行选择,选出7个优良家系,其材积、树高和胸径预期遗传增益分别达18.55%,2.71%和6.74%。选出的优良家系表现出明显的生长优势,可用作种子园建园材料,也可作为优良材料推广应用。A survey was conducted on the 24-year old openly pollinated family offspring of Cunninghamia lanceolata plus tree that are provincially uniform numbered in Fushun National Forest Farm, Sichuan Province. The differences in major growth traits and the correlations among different growth traits of 45 families were analyzed, the superiority of these families were appraised, the genetic parameters and genetic gains were assessed by means of comparative study and variation analysis. The results showed that there were significant differences in height, DBH and standing volume among the 45 families. The standing volume was intermediately under genetic control, whereas the height and DBH were weakly under genetic control. 7 superior families with good growth performance were selected from 45 openly pollinated families mainly according to standing volume in combination with height and DBH indices. The average values of genetic gains of volume, height and DBH were 18.55%, 2. 71% and 6. 74% , respectively. These superior families showed good growth traits and could be used for seed orchard plantation and applied for extension as potential genetic breeding materials.

关 键 词：杉木 优树 子代测定 优良家系选择 

分 类 号：S722.3[农业科学—林木遗传育种] S791.270.4[农业科学—林学]