AN EVALUATION OF THREE CYCLES OF FULL-SIB FAMILY SELECTION IN A SYNTHETIC POPULATION OF MAIZE
Abstract
Three cycles of full-sib family selection for yield were conducted in the synthetic corn population ETO x CBC. In order to reduce the size of the yield trials, full-sib families were subjected to an extra year of selection for pest resistance and plant characters of agronomic importance, such as lodging resistance. As measured by the regression of yield on cycle of selection, yield gains were 3.4% per cycle. There was no appreciable decrease in genetic variation. Percent lodging was reduced 3.6% per cycle and percent moisture was reduced 1.2% per cycle. Complete evaluation of gains in agronomic acceptability of the population was beyond the scope of this work; however, potential gains in acceptability may justify the use of the extra year of selection.
Degree
Ph.D.
Subject Area
Agronomy
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