Association between rDNA alleles and quantitative traits in doubled haploid populations of barley

W. Powell, W. T.B. Thomas, D. M. Thompson, J. S. Swanston, R. Waugh

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Doubled haploids (DH) were generated from reciprocal F 1 hybrids which were heterozygous for alleles at the Nor-H3 locus on chromosome 5H of barley. The r-DNA alleles did not deviate significantly from the expected 1:1 ratio and the DH progenies were classified into two groups based on the allelic constitution of the Nor-H3 locus. The DHs were grown in a randomized, replicated field experiment and a range of agronomic and quality traits were recorded. The Nor-H3 locus was associated with a significant portion of the genetic variation for: yield, thousand corn weight, water sensitivity and milling energy requirement of the grain. However, the magnitude of the differences between groups was dependent on the direction of the cross. The milling energy requirement of the grain was consistently associated with alleles at the Nor-H3 locus. These results are presented in relation to the dynamics of rDNA evolution and variability. The potential of molecular markers in conjunction with doubled haploids to map quantitative traits in barley is also discussed.

Original languageEnglish
Pages (from-to)187-194
Number of pages8
JournalGenetics
Volume130
Issue number1
Publication statusPublished - 1 Jan 1992

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Haploidy
Hordeum
Ribosomal DNA
Alleles
Population
Constitution and Bylaws
Zea mays
Chromosomes
Weights and Measures
Water
DNA

Cite this

Powell, W., Thomas, W. T. B., Thompson, D. M., Swanston, J. S., & Waugh, R. (1992). Association between rDNA alleles and quantitative traits in doubled haploid populations of barley. Genetics, 130(1), 187-194.
Powell, W. ; Thomas, W. T.B. ; Thompson, D. M. ; Swanston, J. S. ; Waugh, R. / Association between rDNA alleles and quantitative traits in doubled haploid populations of barley. In: Genetics. 1992 ; Vol. 130, No. 1. pp. 187-194.
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Powell, W, Thomas, WTB, Thompson, DM, Swanston, JS & Waugh, R 1992, 'Association between rDNA alleles and quantitative traits in doubled haploid populations of barley', Genetics, vol. 130, no. 1, pp. 187-194.

Association between rDNA alleles and quantitative traits in doubled haploid populations of barley. / Powell, W.; Thomas, W. T.B.; Thompson, D. M.; Swanston, J. S.; Waugh, R.

In: Genetics, Vol. 130, No. 1, 01.01.1992, p. 187-194.

Research output: Contribution to journalArticle

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Powell W, Thomas WTB, Thompson DM, Swanston JS, Waugh R. Association between rDNA alleles and quantitative traits in doubled haploid populations of barley. Genetics. 1992 Jan 1;130(1):187-194.