Abstract
Results of 5 generations of selection for improved productivity in corn by selecting for prolificacy, a correlated trait, are reported. The regression for gain in yield per cycle of selection relative to the parental variety, Hays Golden, was 6.28%. This compares favorably with a previously reported gain from mass selection in the same variety using weight of grain per plant as the selection trait. The greater effectiveness of selection where prolificacy was the primary trait is believed due to higher selection intensity used as well as higher heritability.
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