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GrainGenes Reference Report: TAG-91-744

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Reference	TAG-91-744
Title	A comparison of male and female recombination frequency in wheat using RFLP maps of homoeologous group 6 and 7 chromosomes
Journal	Theoretical and Applied Genetics
Year	1995
Volume	91
Pages	744-746
Author	Wang G [ Show all 7 ]
Abstract	A novel approach was used to compare male and female recombination rates in wheat Doubled haploid lines were developed from an F1 using two distinct approaches: the anther-culture technique and the Hordeum bulbosum system, from which sets of lines were developed from 'male' and 'female' meioses, respectively The genotype of the lines was established at RFLP and isozyme markers polymorphic on chromosomes of homoeologous groups 6 and 7, and 'male' and 'female' linkage maps were calculated using this information The markers in one segment of chromosome 6B exhibited disturbed segregation frequencies in the anther-culture population. The 'male' and 'female' maps differed significantly in recombination frequency between some markers on two chromosomes, and these were consistent in direction within chromosomes and inconsistent in direction between chromosomes. In two of the four chromosomes studied the 'male' map was much longer than the 'female' map. These results suggest that significant differences may exist in male and female recombination frequencies in bread wheat which are specific to certain chromosomal segments but are inconsistent in direction between chromosomes. Other factors, such as environmental influences, may also be important in creating differences.
Keyword	[ Hide all but 1 of 20 ] anther-culture chromosome chromosome-maps doubled-haploids females frequency gene-mapping genetic markers haploid homoeologous-chromosomes hordeum bulbosum loci males meiosis recombination restriction fragment length polymorphism sex-differences substitution substitution-lines triticum aestivum

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