New sources of compact spike morphology determined by the genes on chromosome 5A in hexaploid wheat

Little is known about the relationship between compact spike loci in hexaploid wheat species. We studied two new compact spike mutants of common wheat Triticum aestivum L. (2n = 6x = 42, genome formula BBAADD). The new compact spike genes, C 739 of MCK 739 and Cp of near-isogenic line Mironovskaya 8...

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Bibliographic Details
Published in:Genetic resources and crop evolution 2012-08, Vol.59 (6), p.1115-1124
Main Authors: Kosuge, K, Watanabe, N, Melnik, V. M, Laikova, L. I, Goncharov, N. P
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Chromosomes
dominant genes
Dwarfism
Genes
Genetic markers
Genetic resources
Genomes
hexaploidy
Life Sciences
Loci
microsatellite repeats
Microsatellites
Morphology
mutants
Plant Genetics and Genomics
Plant Physiology
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Research Article
Triticum aestivum
Triticum turgidum subsp. durum
Wheat
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Summary:Little is known about the relationship between compact spike loci in hexaploid wheat species. We studied two new compact spike mutants of common wheat Triticum aestivum L. (2n = 6x = 42, genome formula BBAADD). The new compact spike genes, C 739 of MCK 739 and Cp of near-isogenic line Mironovskaya 808 (Vrn1), were mapped using aneuploid stocks and microsatellite markers. The C 739 and Cp loci were distally linked with the microsatellite marker Xbarc319 in the F2 populations of MCK 739 × ‘Novosibirskaya 67’ and Cp-Mironovskaya 808 (Vrn1) × ‘Saratovskaya 29’. It was evident that the loci affecting compact spikes in T. aestivum mutants were located on chromosome 5AL distal from Q locus. These loci also affected to semi-dwarfism. We named this locus Cp1 (C ompact p lant 1) for all accessions. Cp1 was allelic to C 17648 gene located on the chromosome 5AL of tetraploid wheat [Triticum durum Desf. (2n = 4x = 28, genome formula BBAA)]. These dominant genes on chromosome 5AL will be utilized as new gene resources of compact spike morphology in hexaploid wheat. Relationship between loci Q and Cp1 was also discussed.
ISSN:0925-9864
1573-5109
DOI:10.1007/s10722-011-9747-9