ISSN:
1432-2242
Keywords:
Key words Triticum aestivum
;
Doubled haploids
;
Intervarietal map
;
Distortion segregation
;
Genetic map comparison
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract An intervarietal molecular marker map covering most of the nuclear genome was developed in Triticum aestivum. One hundred and six androgenetic-derived doubled haploid lines obtained from the F1 between monosomics of ‘Chinese Spring’ and ‘Courtot’ were analysed for genetic mapping. The map covered 18 of the 21 chromosomes with an identical distribution of markers in the A and B genome, and only small segments of the D genome. Distorted markers were mapped using Bailey’s 2-point method and revealed skewed regions on 1A, 1DS, 2A, 2B, 4AS and 6B. Comparison with a wide cross [‘Opata’×Synthetic hexaploid (T. tauschii/‘Altar 84’)] showed colinearity for markers on homologous chromosomes, but revealed a large proportion (25%) of markers mapped on non-homoeologous chromosomes, i. e. heterologous markers. The origin of the material and distortion segregation are discussed with particular emphasis on investigations of D-genome markers.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s001220050425
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