Detailed analisis on a subset of lines

Nineteen doubled haploid (DH) lines from the Dicktoo x Morex mapping population were phenotypes in controlled environment photoperiod experiments to determine the role of two previously detected QTL on developmental patterns of barley. The QTL are hypothesised to represent the effects of the Ppd and Sh2 loci on chromosomes 2 (2H) and 7 (5H), respectively. Alleles at the Ppd locus were found to be vary in response to photoperiod duration. Vernalization had some effect on alleles at the both loci. The presence of early and late flowering transgressive segregants in this mapping population can be explained by interactions between the Ppd and Sh2 loci. The Ppd and Sh2 loci are hypothesised to be homoeologous with the Ppd and Vrn1 loci of wheat . This work is in press at TAG: Karsai, I., K. Meszaros, P.M. Hayes, and Z. Bedo. 1996. Effects of chromosome 2 (2H) and 7 (5H) loci on developmental patterns in barley (Hordeum vulgare L.) under different light regimes. Theor. Appl. Genet. (in press).

For a preprint of this paper, or for access to the phenotype data, please contact:

Ildiko Karsai: karsaii@fsnew.mgki.hu

Klara Meszaros: meszarosk@fsnew.mgki.hu