白桦幼苗株高和地径的遗传分析  

Genetic Analysis of Plant Height and Diameter at Ground Level of Silver Birch(Betula platyphylla) Seedling

作　　者：李绍臣[1] 高福玲[1] 姜廷波[1] 丁宝建[1] 唐鑫华[1] 曲跃军[1] 杨传平[1] 刘桂丰[1] 姜静[1] 

机构地区：[1]东北林业大学林木遗传育种与生物技术教育部重点实验室,哈尔滨150040

出　　处：《农业生物技术学报》2008年第1期134-137,共4页Journal of Agricultural Biotechnology

基　　金：黑龙江省重点攻关项目(No.GB06B303-5);教育部重点项目(No.106065)资助

摘　　要：以来自不同种源的6个白桦(Betula platyphylla)优良树为亲本,按Griffing方法4的不完全双列杂交设计进行人工控制受粉,获得F1杂种。对白桦幼苗的株高和地径一般配合力(GCA)和特殊配合力(SCA)分析表明,白桦幼苗的株高和地径同时受加性和非加性效应控制;同一亲本不同性状的GCA差异较大,同一性状在不同亲本间的GCA差异也比较大,在6个亲本中来自清源的Q2的株高和地径GCA最高,来自帽儿山种源的M2次之;同一性状不同组合和同一组合不同性状的SCA均有较大差异,来自芬兰种源和来自清源种源的2个亲本组合E8×Q1的株高和地径的特殊配合力最高;幼苗株高和地径的一般遗传力和特殊遗传力均在60%以上,可以对株高和地径这两个性状进行早期选择。Six silver birch （Betula platyphylla） parents of diverse provenance were crossed according to Griffing 4 diallel design, and the plant height and diameter at ground level （DGL） of their F1 progeny was observed. The analysis of general combining ability （GCA） and specific combining ability （SCA） showed that the two phenotypes were co-controlled by additive effect and non-additive effect simultaneously. The GCA two phenotypes of one parent and the same phenotype among different parents had significant differ- ences. Q2 from Qingyuan provenance （China） was the one of best parents, and followed by M2 from Moer-mountain provenance（China）. On the other hand, the SCA of two phenotype of same cross and the same phenotype among different cross also varied prominently, the cross between E8 from Finland provenance and QI from Qingyuan provenance had the highest SCA on plant height and DGL. The heritabilities of plant height and DGL were strongly high （over 60%）, suggesting that these two phenotypes can be used for early selection.

关 键 词：白桦 双列杂交 一般配合力 特殊配合力 遗传力 

分 类 号：S184[农业科学—农业基础科学]