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林业科学 ›› 2010, Vol. 46 ›› Issue (1): 29-35.doi: 10.11707/j.1001-7488.20100105

• 论文 • 上一篇    下一篇

林木半同胞子代测定遗传模型分析

童春发 卫巍 尹辉 施季森   

  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
  • 收稿日期:2008-10-08 修回日期:1900-01-01 出版日期:2010-01-25 发布日期:2010-01-25
  • 通讯作者: 施季森

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

Tong Chunfa, Wei Wei, Yin Hui,Shi Jisen   

  1. Key Laboratory of Forest Genetics & Biotechnology of Ministry of EducationNanjing Forestry University Nanjing 210037
  • Received:2008-10-08 Revised:1900-01-01 Online:2010-01-25 Published:2010-01-25

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。

关键词: 子代测定, 方差分量, 遗传力, 遗传相关, 不平衡数据

Abstract:

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.

Key words: progeny test, variance components, heritability, genetic correlation, unbalanced data