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Associations between quantitative traits and enzyme loci in the F2 population of a maize hybrid

Associations between quantitative traits and enzyme loci in the F2 population of a maize hybrid 122 72 72 1 1 A. L. Kahler C. F. Wehrhahn USDA, ARS (Oilseeds and Cereals Research Unit, SDSU) Northern Grain Insects Research Laboratory R.R. 3 57006 Brookings SD USA Institute of Animal Resource Ecology University of British Columbia 2204 Main Mall V6T 1W5 Vancouver B.C. Canada Summary Univariate and multivariate analyses were used to identify associations between eight enzyme marker loci and 11 quantitative traits of maize ( Zea mays L.). The material analyzed included inbred lines Wf9 and Pa405, single-cross hybrid Wf9 X Pa405, and the F2 generation of the selfed single-cross hybrid. Each enzyme locus assayed was associated with at least one quantitative trait, and all quantitative traits were associated with genotypes at particular enzyme loci. Significant associations also were found between the level of heterozygosity per individual and nine of 11 quantitative traits. The total contribution to heterosis, for seed yield per plant, of genes linked with the eight enzyme loci, was 27% of the F2 mean and 18% of the difference in mean between the F1 hybrid and the inbred parents. Genes linked with Glu1 accounted for nearly one third of the total dominance effect detected by the eight enzyme loci. The chromosome segments marked by loci with significant effects on seed yield were markedly overdominant. The large heterotic effects of chromosome segments marked by particular loci suggest that enzyme loci could be used to help transfer genes responsible for heterosis to inbred lines. We conclude that analyses of additional inbred lines, F1 hybrids, and F2 populations in more environments will halp identify specific associations between enzyme loci, or chromosome segments which they mark, and important agronomic traits. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png TAG Theoretical and Applied Genetics Springer Journals

Associations between quantitative traits and enzyme loci in the F2 population of a maize hybrid

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References (37)

Publisher
Springer Journals
Copyright
Copyright © 1986 by Springer-Verlag
Subject
Life Sciences; Biotechnology; Agriculture; Biochemistry, general; Plant Biochemistry; Plant Sciences; Plant Genetics & Genomics
ISSN
0040-5752
eISSN
1432-2242
DOI
10.1007/BF00261448
pmid
24247765
Publisher site
See Article on Publisher Site

Abstract

122 72 72 1 1 A. L. Kahler C. F. Wehrhahn USDA, ARS (Oilseeds and Cereals Research Unit, SDSU) Northern Grain Insects Research Laboratory R.R. 3 57006 Brookings SD USA Institute of Animal Resource Ecology University of British Columbia 2204 Main Mall V6T 1W5 Vancouver B.C. Canada Summary Univariate and multivariate analyses were used to identify associations between eight enzyme marker loci and 11 quantitative traits of maize ( Zea mays L.). The material analyzed included inbred lines Wf9 and Pa405, single-cross hybrid Wf9 X Pa405, and the F2 generation of the selfed single-cross hybrid. Each enzyme locus assayed was associated with at least one quantitative trait, and all quantitative traits were associated with genotypes at particular enzyme loci. Significant associations also were found between the level of heterozygosity per individual and nine of 11 quantitative traits. The total contribution to heterosis, for seed yield per plant, of genes linked with the eight enzyme loci, was 27% of the F2 mean and 18% of the difference in mean between the F1 hybrid and the inbred parents. Genes linked with Glu1 accounted for nearly one third of the total dominance effect detected by the eight enzyme loci. The chromosome segments marked by loci with significant effects on seed yield were markedly overdominant. The large heterotic effects of chromosome segments marked by particular loci suggest that enzyme loci could be used to help transfer genes responsible for heterosis to inbred lines. We conclude that analyses of additional inbred lines, F1 hybrids, and F2 populations in more environments will halp identify specific associations between enzyme loci, or chromosome segments which they mark, and important agronomic traits.

Journal

TAG Theoretical and Applied Genetics – Springer Journals

Published: Apr 1, 1986

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