On the Probabilities of Obtaining Negative Estimates of Genetic Variance Components
作者:
W. Y. Tan,
S. P. Wong,
期刊:
Biometrical Journal
(WILEY Available online 1978)
卷期:
Volume 20,
issue 1
页码: 69-79
ISSN:0323-3847
年代: 1978
DOI:10.1002/bimj.4710200109
出版商: WILEY‐VCH Verlag
关键词: Additive genetic variance;Dominance genetic variance;LAGUERRE polynomial;Probabilities of negative estimates
数据来源: WILEY
摘要:
AbstractThis paper derives the probabilities of obtaining negative estimates of additive and dominance genetic variances when one uses the traditional weighted least square method for estimating genetic variances as given in MATHER and JINKS (1971). The model considered involvesP1, P2, F2, B1(Backcross toP1) andB2(Backcross toP2). The results are derived under the ordinary assumptions as made in the genetic literatures. It is shown that unless the genetic effects are very large and environmental effects small, the probabilities of obtaining negative estimates of additive and dominance variances are in general quite large.
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