Wheat Microsatellites: The Prospects of Application for Gene Mapping and Analysis of the Reconstructed Genomes

Wheat Microsatellites: The Prospects of Application for Gene Mapping and Analysis of the... Microsatellite markers Xgwmand Xgdmwere used to map the S1, S2, and S3genes of the induced sphaerococcoid mutants of Triticum aestivumL. and to analyze the introgressive lines of common wheat, obtained by crossing several common wheat cultivars to T. timopheeviiZhuk.; these lines carry the Lrgenes of resistance to leaf rust. All sphaerococcoid genes were linked to centromeric markers of the short and long arms of chromosomes of homoeologous group 3 of T. aestivum: the S1locus was located between the markers Xgdm72and Xgwm456; the S2gene, betweenXgwm845and Xgwm566; and the S3was located between Xgwm2and Xgwm720. The introgressive lines of common wheat carry the following substitutions from T. timopheevii, most of 2A and 2B and telomeric region of the 5AL chromosome in the line 821, the same introgression and also the completely substituted chromosome 4B in line 837, and the partially substituted chromosomes 2A and 2B in line 842. The introgression of the genomic material fromT. timopheeviiinto the chromosomes of homoeologous group 2 was the common trait of all three lines resistant to leaf rust. The authors discuss the feasibility of using microsatellite-derived data for analyzing nonmapped wheat species, linking new genes to wheat molecular genetic maps, and analyzing wheat genomes of diverse hybrid origins. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Wheat Microsatellites: The Prospects of Application for Gene Mapping and Analysis of the Reconstructed Genomes

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Kluwer Academic Publishers-Plenum Publishers
Copyright © 2001 by MAIK “Nauka/Interperiodica”
Life Sciences; Plant Sciences
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