柳杉种子园亲本遗传变异规律与选择  

Genetic variation and selection of Cryptomehia fortunei seed orchard parents

作　　者：欧阳磊[1] 

机构地区：[1]福建省林业科学研究院国家林业局南方山地用材林培育重点实验室,福建福州350012

出　　处：《中南林业科技大学学报》2010年第3期90-94,共5页Journal of Central South University of Forestry & Technology

基　　金：福建省科技厅农业科技重点项目(2006N0016)

摘　　要：对32年生柳杉种子园亲本生长、木材品质和形质等性状的遗传变异规律和相关性进行了研究。结果表明:生长性状在种源和无性系水平上存在明显差异,木材品质、形质性状中除树皮率在种源和无性系水平上存在明显差异外,其余性状差异均不明显;生长性状在早期和成熟期间有一定相关性,其中无性系水平上的相关性更强,生长性状与木材品质、形状性状间相关性没有明显的规律。通过综合比较,选择出柳杉优良亲本18个,32年生时单株材积平均值为0.898 09 m3,木材基本密度平均值为0.313 11 g/m3,木材心材比率平均值为58.03%,偏心率平均值为0.02%,结实均为中等偏上。这些优良亲本可用于柳杉杂交亲本或高世代种子园建园材料。The relevances and genetic variation of the growth traits,wood quality and form auality traits of 32 years old Cryptomeria fortunei seed orchard parents were studied in this paper.The results are as follows： the differences of growth traits among the provenances and clones are very significant,the differences of bark rate among the provenances and clones are significant,and the other wood quality traits were not significant.The correlations of growth traits at an early stage and mature are some significant,and the correlation are more strong at clones level,The correlations of growth traits and wood quality traits were not obviously regular.Through comprehensive comparison,18 excellent Cryptomeria fortunei seed orchard parents have been selected,the average volume was 0.898 09 m3,the average wood basic density was 0.313 11 g/m3,the average ratio of heartwood timber was 58.03%,and the average eccentricity was 0.02% when Cryptomeria fortunei seed orchard parents are 32 years old.These selected parents can be used to hybrid parents or parents of high-generation seed orchard.

关 键 词：林木遗传育种 柳杉 种子园亲本 遗传变异 相关性 选择 

分 类 号：S791.31[农业科学—林木遗传育种] S722.83[农业科学—林学]