HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Laible, C. A. Articles by Dirks, V. A. Search for Related Content PubMed Articles by Laible, C. A. Articles by Dirks, V. A. Agricola Articles by Laible, C. A. Articles by Dirks, V. A.

Genetic Variance and Selective Value of Ear Number in Corn (Zea mays L.)¹

Means, genetic variances and genetic covariances for ear number and yield were evaluated in the P₁ P₂ F₁ F₂ F₃ B₁ B₂ B₁₁ B₂₂ and B₂₁ generations to determine the inheritance of ear number and its relationship to yield in segregating populations of corn (Zea mays L.). Ear number means and genetic variance component analyses generally approached expected values for an additive model with partial to complete dominance for multiple ears. Likewise, yield means followed an additive pattern with some evidence for dominance effects suggested by the variance components. The use of a selection index composed of ear nmnber and yield was superior to selection based upon yield alone.

Key Words: selection indices • genotypic correlations • phenotypic correlations

² Manager Research Data and Quantitative Genetics, Funk Bros. Seed Co., Bloomington, Ill. 61702 (formerly Graduate Assistant, University of Minn.), and Research Associate, University of Minnesota.

Received for publication April 5, 1968.