An intervarietal molecular marker map in Triticum aestivum L em Thell and comparison with a map from a wide cross

被引:96
作者
Cadalen, T
Boeuf, C
Bernard, S
Bernard, M
机构
[1] INRA, Stn. d'Amelioration des Plantes, 63039 Clermont-Ferrand Cedex 2, Domaine de Crouelle
关键词
Triticum aestivum; doubled haploids; intervarietal map; distortion segregation; genetic map comparison;
D O I
10.1007/s001220050425
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
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 F-1 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' x 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.
引用
收藏
页码:367 / 377
页数:11
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