火炬松种源遗传变异研究及纸浆材优良种源评选Ⅰ.性状的地理变异和相关分析  

Genetic Study and Pulpwood Selection of Loblolly Pine Provenances Ⅰ.Geographical Variation and Correlation Analyse of Economic Traits

作　　者：刘昭息[1] 何玉友[1] 孙海菁[1] 姜景民[1] 吕本树[1] 

机构地区：[1]中国林业科学研究院亚热带林业研究所

出　　处：《林业科学研究》1997年第3期253-258,共6页Forest Research

摘　　要：经过３个年度种批的７４个种源其９～１２年生试验林的调查研究表明，在浙江地区火炬松种源间于生长、产量、形质和材性方面，主要性状的绝大多数存在着显著或极显著的差异，并受中度或中偏上广义遗传力的控制，干材干物质重的变幅和遗传变异系数较之其它性状更大。分析还表明，主要性状的变化与种源的原产地气候、地理位置重要因子有着复杂且多样的联系；重要性状相互间的简单相关关系亦表现不一，特别是材积和干材干物质重两性状间的各相关系数都在０．９５以上，木材基本密度与生长、产量方面的性状呈负向相关。The 3 provenance tests of 9 a,11 a,12 a in Zhejiang Province,including 74 loblolly pine seed sources,were studied.Many variables of growth,yield,tree form and wood property showed there were more significant difference among provenances with above moderate heritability,the variation of stem dry weight was more significant than that of the other traits.There was complex relationship between the provenance variation of variables and the climatic factors and geographical position of seed sources.The intercorrelations between important traits were also diversified,every correlation coefficent of stem volume and dry weight was above 0.95,wood density were negatively correlated with growth and yield traits,and positively correlated with tree form traits.

关 键 词：火炬松 种源 地理变异 遗传变异 

分 类 号：S791.255[农业科学—林木遗传育种]