Campus Units

Agronomy

Document Type

Article

Publication Version

Published Version

Publication Date

1987

Journal or Book Title

Journal of Heredity

Volume

78

Issue

6

First Page

372

Last Page

376

DOI

10.1093/oxfordjournals.jhered.a110419

Abstract

Reciprocal full-sib selection (FR) for yield improvement was conducted in the BS 10 and BS 11 maize (Zea mays L.) populations. Our objectives were to evaluate the effects of six cycles of reciprocal full-sib selection in BS 10 and BS 11 and to determine what changes had occurred in the magnitudes of additive and dominance variance resulting from six cycles of selection. Grain yield of full-sib progenies increased 6.3 percent in BS 10 and 5.7 percent in BS 11 from CO to C6. Grain yield of S1 lines increased 11.6 percent in BS 10 and 26.3 percent in BS11 from C0 to C6. Estimates of additive genetic variance suggested a decrease from the C0 to C6 of BS 10 and BS 11 for yield and stalk lodging and an increase for ears per plant from BS 10C0 to BS10 (FR) C6. Estimates of dominance variance generally increased, but decreases were observed for yield and stalk lodging in BS11. The changes in the estimates of genetic variances suggest genetic variability was reduced with selection but most of the changes were small and statistically nonsignificant.

Comments

This article is published as Reeder Jr, L. R., A. R. Hallauer, and K. R. Lamkey. "Estimation of genetic variability in two maize populations." Journal of Heredity 78, no. 6 (1987): 372-376.doi: 10.1093/oxfordjournals.jhered.a110419. Posted with permission.

Rights

Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.

Language

en

File Format

application/pdf

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