Lorieux Mathias auteur aut IRD Ndjiondjop Marie-Noëlle auteur aut IRD Ghesquière Alain auteur aut IRD text journalArticle eng text/pdf reformatted digital access Oryza glaberrima is an endemic African cultivated rice species. To provide a tool for evaluation and utilisation of the potential of O. glaberrima in rice breeding, we developed an interspecific O. glaberrimaxOryza sativa genetic linkage map. It was based on PCR markers, essentially microsatellites and STSs. Segregation of markers was examined in a backcross (O. sativa/O. glaberrima//O. sativa) population. Several traits were measured on the BC1 plants, and major genes and QTSs were mapped for these traits. Several of these genes correspond well to previously identified loci. The overall map length was comparable to those observed in indicaxjaponica crosses, indicating that recombination between the two species occurs without limitation. However, three chromosomes show discrepancies with the indicaxjaponica$ maps. The colinearity with intraspecific maps was very good, confirming previous cytological observations. A strong segregation-distortion hot spot was observed on chromosome 6 near the waxy gene, indicating the presence of s10, a sporo-gametophytic sterility gene previously indentified by Sano (1990). The main interests of such a PCR-based map for African rice breeding are discussed, including gene and QTL localisation, marker-assisted selection, and the development of interspecific introgression lines. (Résumé d'auteur) specialized RIZ HYBRIDATION INTERSPECIFIQUE AMELIORATION DES PLANTES AMELIORATION GENETIQUE ANALYSE GENETIQUE MARQUEUR GENETIQUE ETUDE EXPERIMENTALE CARTE GENETIQUE QTL.QUANTITATIVE TRAIT LOCUS MICROSATELLITE 076AMEPLA04 100 3-4 593-601 2000 0040-5752 https://www.documentation.ird.fr/hor/fdi:010020714 0040-5752 [F B010020714] https://www.documentation.ird.fr/hor/fdi:010020714 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/b_fdi_53-54/010020714.pdf IRD - Base Horizon / Pleins textes 2000-03-17 2018-06-19 fdi:010020714 fre