林木半同胞子代测定遗传模型分析  

Analysis of Genetic Model for Half-Sib Progeny Test in Forest Trees

作　　者：童春发[1] 卫巍[1] 尹辉[1] 施季森[1] 

机构地区：[1]南京林业大学林木遗传与生物技术省部共建教育部重点实验室,南京210037

出　　处：《林业科学》2010年第1期29-35,共7页Scientia Silvae Sinicae

基　　金：福建省重点公关项目"杉木纸浆材选育研究"(021010314);国家"十一五"科技支撑育种工程项目"速生优质杉木新品种"(2006BAD01A14)

摘　　要：针对林木单地点半同胞子代测定试验,给出遗传模型不同形式的表达式,采用方差分析法推导平衡数据和不平衡数据条件下方差分量估计式,并给出方差分量估计的抽样方差以及方差分量假设检验统计量的计算方法。在此基础上,给出不平衡数据条件下家系遗传力的计算公式以及家系遗传力和单株遗传力抽样方差近似计算方法。对于2个数量性状,给出不平衡数据条件下遗传相关系数估计式,而且还给出遗传相关系数估计的方差近似计算方法。用VC++6.0编写计算单地点半同胞子代测定模型中各种遗传参数的Windows应用软件。In this paper, different expressions of a genetic model were presented for the half-sib progeny test of forest trees at a single site. Formulas of estimating the variance components were derived by using ANOVA method for both balanced data and unbalanced data based on the genetic model, and the procedures were also given for calculating sampling variances of the estimators and the statistic for hypothesis test of variance components. Furthermore, a formula of family heritability was given for unbalanced data, and the procedures to calculate sampling variances of family heritability and single tree heritability were also described. For any two quantitative traits, the methods to calculate the genetic correlation coefficient and its sampling variance were presented. Finally, a Windows software was developed to calculate all the parameters of the genetic model and can be freely used by forest breeders.

关 键 词：子代测定 方差分量 遗传力 遗传相关 不平衡数据 

分 类 号：S722.3[农业科学—林木遗传育种] Q348[农业科学—林学]