斑皮桉生长性状及木材材性遗传参数估算  

Genetic Parameter Estimates for Growth and Wood Quality of Corymbia citriodora

作　　者：兰俊[1,2] 吴永富 罗建中[3] 吴兵 Raymond C A 

机构地区：[1]广西国有东门林场,广西扶绥532108 [2]澳大利亚南十字星大学 [3]国家林业局桉树研究开发中心,广东湛江524022

出　　处：《桉树科技》2011年第2期16-20,共5页Eucalypt Science & Technology

基　　金：澳大利亚ACIAR项目"提高中国;越南和澳大利亚桉树人工林锯材价值:育种与营林技术"(FST/1999/095)

摘　　要：分别以位于澳大利亚新南威尔士州北部沿海地区Urunga、Coffs Harbour、Grafton和Casino的4个斑皮桉无性系试验作为研究对象,测定其林木生长性状和木材材性并进行遗传参数估算。研究表明,林木生长性状和木材材性均受到较高的遗传控制,胸径和树高的广义遗传力（H2）在0.46~0.71之间,Pilodyn值的广义遗传力在0.52~0.77之间,FAKOPP值的广义遗传力在0.64~0.85之间;Pilodyn值与FAKOPP值呈显著的正相关关系,但二者与胸径均无显著相关性;环境因子对生长性状和木材材性的影响显著;遗传与环境交互作用对木材材性影响不显著,但对生长性状如胸径有一定影响。Four C. citriodora clonal trials, located at Urunga, Coifs Harbour, Grafton and Casino on the north coast of New South Wales, were sampled to estimate genetic parameters for growth and non - destruc- tive wood properties. Both growth traits and wood properties were under strong genetic control, with broad- sense hefitabilities（H2） ranging from 0.46 to 0.71 for diameter at breast height （DBH） over bark and total tree height（HT） ,0.52 to 0.77 for pilodyn value and 0.64 to 0.85 for FAKOPP value. Pilodyn and FAKOPP were positively correlated, whilst neither of them had significant relationship with DBH. Site effects on growth and wood quality were significant. Little genotype by environment interactions （GEl） was observed. By compari- son, the relatively lower correlations for DBH meant small GEl occurred.

关 键 词：斑皮桉 广义遗传力 遗传相关性 遗传与环境交互作用 生长性状 Pilodyn值 FAKOPP值 

分 类 号：S758.52[农业科学—森林经理学] S781[农业科学—林学]