Author:
Lin C. Y.,Pevzner I.,Friars G. W.
Abstract
Three generations of index selection for the combined genetic gain in 13-day larval and 21-day pupal weight were carried out in each of three replicates in Tribolium castaneum. Five indexes were constructed using differing levels of heritability for larval weight (0.9, 0.7, 0.5, 0.3 and 0.1). The effect of parameter estimation errors, involving larval weight, on the efficiency of index selection was thus evaluated experimentally. The results from this experiment confirmed the theoretical expectations that errors of parameter estimation would affect the efficiency of index selection. The present study further showed that the overestimation of the parameters would affect the selection efficiency more than the underestimation. The combined gain was found to be realized mainly through genetic change in pupal weight, a trait with lower heritability.
Publisher
Canadian Science Publishing
Subject
Cell Biology,Plant Science,Genetics
Cited by
11 articles.
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