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GrainGenes Reference Report: GNM-36-548

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Reference	GNM-36-548
Title	A cytogenetically based physical map of chromosome 1B in common wheat
Journal	Genome
Year	1993
Volume	36
Pages	548-554
Author	Kota R Gill K Gill B Endo T
Abstract	We have constructed a cytogenetically based physical map of chromosome 1B in common wheat by utilizing a total of 18 homozygous deletion stocks It was possible to divide chromosome 1B into 17 subregions Nineteen genetic markers are physically mapped to nine subregions of chromosome 1B Comparison of the cytological map of chromosome 1B with an RFLP-based genetic linkage map of Triticum tauschii revealed that the linear order of the genetic markers was maintained between chromosome 1B of hexaploid wheat and 1D of T tauschii Striking differences were observed between the physical and genetic maps in relation to the relative distances between the genetic markers. The genetic markers clustered in the middle of the genetic map were physically located in the distal regions of both arms of chromosome 1B. It is unclear whether the increased recombination in the distal regions of chromosome 1B is due to specific regions of increased recombination or a more broadly distributed increase in recombination in the distal regions of Triticeae chromosomes.
Keyword	[ Hide all but 1 of 12 ] c-bands chromosome chromosome-banding chromosome-maps cytogenetics deletion genetic markers karyotype lines molecular-mapping restriction fragment length polymorphism triticum aestivum

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