Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 14:625-630 (1974)
© 1974 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Simulated Selection in Autotetraploid Populations. I. Computer Methods and Effects of Linkage1

M. R. Swanson, J. W. Dudley and S. G. Carmer2

A computer simulation model for mass selection in a random mating autotetraploid population was presented. Selection was based on a single quantitative trait controlled genetically by 40 genes, 4 on each of 10 chromosomes. The model allowed for arbitrary gene frequency, double reduction, linkage, dominance, epistatic deviations involving two loci, population size, intensity of selection, and environmental variance. Effects of mutation, migration, and natural selection were ignored.

Preliminary results revealed that linkage affected selection response in diploid and autotetraploid populations about equally when genetic variance was primarily additive. With dominance, linkage had a greater effect on diploids.

Key Words: Gene transmission • Dominance • Mating

1 Contribution from the Agronomy Department, University of Illinois, Urbana. Computing funds provided by a grant from the Graduate Research Board, University of Illinois. Part of a thesis submitted by the senior author in partial fulfillment of the requirements for the Ph.D. degree.

2 Biometrician, Animal and Plant Health Inspection Service, USDA; Professor of Plant Genetics and Professor of Biometry, Agronomy Department, University of Illinois, respectively.

Received for publication February 23, 1973.




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Copyright © 1974 by the Crop Science Society of America.