Exploring the biochemical and histological diversity in the GCP BCNAM parental lines: Towards a high resolution mapping of genomic regions affecting biomass quality

Thera Korothimi, Témé Niaba, Vaksmann Michel, Guindo Diarah, Kouressy Mamoutou, Doumbia Mohamed, Tekete Mohamed Lamine, Guitton Baptiste, Rami Jean-François, Coulibaly Sidibé B., Bonnal Laurent, Larue Florian, Verdeil Jean-Luc, Pot David. 2015. Exploring the biochemical and histological diversity in the GCP BCNAM parental lines: Towards a high resolution mapping of genomic regions affecting biomass quality. In : Genomics and Phenomics for Model-based Maize and Sorghum Breeding. Montpellier : EUCARPIA, 1 poster EUCARPIA Maize and Sorghum Conference. 23, Montpellier, France, 10 Juin 2015/11 Juin 2015.

Résumé : The development of multi-purpose sorghum varieties suitable not only for food, but also for feed and other applications became a priority for most of the breeding programs. However, a better understanding of the genetic determinism of stover quality is required. A BCNAM design involving 3 recurrent parents (RP) and 29 donor parents (DP) has been developed in order to provide the sorghum community with a high resolution mapping design and a relevant breeding scheme towards the development of varieties suitable for the soudano sahelian region. The aim of this study was to characterize the parental lines of a BCNAM multiparental design for their main stem composition and histological properties in order to: • Assess the relevance of this genetic design to reach a better understanding of the genetic bases of these traits • Evaluate the effect of the sowing dates, and height diversity on the biochemical composition of the stems • Have a first image of the relationships between stem histological and biochemical traits

Mots-clés libres : Sorghum, Backcross nested association mapping, Forage, Histology, Genetics

Auteurs et affiliations

• Thera Korothimi, IER (MLI)
• Témé Niaba, IER (MLI)
• Vaksmann Michel, CIRAD-BIOS-UMR AGAP (MLI) ORCID: 0000-0002-5258-1279
• Guindo Diarah, CIRAD-BIOS-UMR AGAP (FRA)
• Kouressy Mamoutou, IER (MLI)
• Doumbia Mohamed, IER (MLI)
• Tekete Mohamed Lamine, IER (MLI)
• Guitton Baptiste, ICRISAT (MLI)
• Rami Jean-François, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0002-5679-3877
• Coulibaly Sidibé B., IER (MLI)
• Bonnal Laurent, CIRAD-ES-UMR SELMET (FRA) ORCID: 0000-0001-5038-7432
• Larue Florian
• Verdeil Jean-Luc, CIRAD-BIOS-UMR AGAP (FRA)
• Pot David, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0001-6144-8448

Source : Cirad-Agritrop (https://agritrop.cirad.fr/600166/)

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