Genotyping of the Q locus in wheat by a simple PCR-RFLP method
Open Access
- 1 January 2009
- journal article
- research article
- Published by Genetics Society of Japan in Genes & Genetic Systems
- Vol. 84 (3), 233-237
- https://doi.org/10.1266/ggs.84.233
Abstract
The Q locus located on the long arm of chromosome 5A is a key factor in evolution and widespread cultivation of domesticated wheat. The Q locus pleiotropically affects many agronomically important traits including threshability, glume shape and tenacity, rachis fragility and others. Genotyping of the Q locus based on the complex traits is ambiguous due to their multi-genetic control through interactions with the Q locus. To determine the Q locus genotype of wheat accessions possessing A genome, we developed a method based on polymerase chain reaction – restriction fragment length polymorphism (PCR-RFLP) analysis. The Q and q alleles were clearly distinguished by PCR-RFLP analysis at six conserved single nucleotide polymorphisms in common wheat and wild and cultivated einkorn, emmer and timopheevi wheat. The Q locus genotype of Triticum sinskajae, which is one of the einkorn wheat species and exhibits free-threshing trait, was determined to be qq as expected. This simple PCR-RLFP-based genotyping method should serve as a useful tool in studying the origin of Q and thus wheat evolution after domestication and the following widespread cultivation.Keywords
This publication has 16 references indexed in Scilit:
- Genetics and genomics of wheat domestication-driven evolutionIsrael Journal of Plant Sciences, 2007
- The maize tasselseed4 microRNA controls sex determination and meristem cell fate by targeting Tasselseed6/indeterminate spikelet1Nature Genetics, 2007
- Map-based analysis of genetic loci on chromosome 2D that affect glume tenacity and threshability, components of the free-threshing habit in common wheat (Triticum aestivum L.)Theoretical and Applied Genetics, 2007
- Molecular Characterization of the Major Wheat Domestication Gene QGenetics, 2006
- Dwarfing effect associated with the threshability gene Q on wheat chromosome 5APlant Breeding, 2003
- Single nucleotide polymorphisms in an STS region linked to the Ncc-tmp1A locus are informative for characterizing the differentiation of chromosome 1A in wheat.Genes & Genetic Systems, 2001
- The Q locus of Iranian and European spelt wheatTheoretical and Applied Genetics, 2000
- QTL mapping of genes controlling ear emergence time and plant height on chromosome 5A of wheatTheoretical and Applied Genetics, 1999
- The Deletion Stocks of Common WheatJournal of Heredity, 1996
- Chromosome mapping of a speltoid suppression gene of Triticum aestivum L. based on partial deletions in the long arm of chromosome 5A.The Japanese Journal of Genetics, 1988