摘要： 利用赤拟谷盗作为试验动物,设计不同群体大小的选择群,基于动物模型估计的育种值对赤拟谷盗23d蛹重双向选择6个世代,分析遗传参数与选择反应的变化趋势。结果表明:所有选择群体获得了不断增高的估计育种值,没有获得对称的表型值蛹重的选择反应;选择群体蛹重现实遗传力的估计均获得中等或高的估计值,范围在0.25~0.56;基础群动物遗传结构、选择群体的大小、世代效应、选择方向是影响遗传参数估计与选择反应的主要因素,基于动物模型估计育种值选择可获得持续、稳定的选择反应。

关键词: 赤拟谷盗, 蛹重, 估计育种值, 遗传参数, 选择反应

Abstract: Based on estimated breeding value of pupa weight of Tribolium Castaueum by individual animal model, Tribolium Castaueum populations with different sizes were divergently selected for 6 generations for estimation of genetic parameters and evaluation of response to selection. Results suggested that constant progress of estimated breeding value in all selected populations were achieved, the response to selection of pupa weight was asymmetrical,and the realized heritability was in a range of 0. 25一0.56;The genetic structure of base population, population size,generation,selection direction could be important factors affecting estimation of genetic parameters and selection progress;selection progress could be obtained based on breeding value by animal model.

Key words: Tribolium Castaneum, Pupa weight, The breeding value, Genetic parameters, Selection response

中图分类号: 

• S433