Ky Chin-Long, Barre Philippe, Lorieux Mathias, Trouslot Pierre, Akaffou S., Louarn Jacques, Charrier A., Hamon Serge, Noirot Michel. (2000). Interspecific genetic linkage map, segregation distortion and genetic conversion in coffee (Coffea sp.). Theoretical and Applied Genetics, 101 (4), p. 669-676. ISSN 0040-5752.
Titre du document
Interspecific genetic linkage map, segregation distortion and genetic conversion in coffee (Coffea sp.)
Année de publication
2000
Type de document
Article
Auteurs
Ky Chin-Long, Barre Philippe, Lorieux Mathias, Trouslot Pierre, Akaffou S., Louarn Jacques, Charrier A., Hamon Serge, Noirot Michel
Source
Theoretical and Applied Genetics, 2000,
101 (4), p. 669-676 ISSN 0040-5752
An interspecific partial genetic linkage map of Coffea sp. based on 62 backcross hybrids is presented. F1 hybrids were generated by a cross between the wild C. pseudozanguebariae and the anciently cultivated C. liberica var. dewevrei (DEW) ; progeny were then derived from a backcross between F1 hybrid and DEW. The map construction consisted of a two-step strategy using 5.5 and 3.1 LOD scores revealed by simulation file. The map consisted of 181 loci : 167 amplified fragment length polymorphism (AFLP) and 13 radom fragment length polymorphism (RFLP) loci. The markers were assembled into 14 linkage groups, each with 4-31 markers covering 1,144 cM. Segregation distorsion was observed for 30% of all loci, in particular 3:1 and 1:3 ratios equally favouring each of the two parents. The existence of such ratios suggests genetic conversions events. This map also represents an initial step towards the detection of quantitative trait loci. (Résumé d'auteur)
