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

Thera K., Teme N., Vaksmann M., Guindo D., Kouressy M., Doumbia M., Tekete M., Guitton B., Rami J.F., Coulibaly Sidibé B., Bonnal L., Larue F., Verdeil J.L., Pot D.. 2015. In : Genomics and Phenomics for Model-based Maize and Sorghum Breeding. Montpellier : EUCARPIA, 1 poster. EUCARPIA Maize and Sorghum Conference. 23, 2015-06-10/2015-06-11, Montpellier (France).

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

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