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24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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Genetic basis of ornamental characters

Axe 1
A quantitative genetic approach is developed to study the genetic determinism of the architecture , flowering , floral development , production of perfume and resistance to pathogens .

 A quantitative genetic approach is developed to study the genetic determinism of the architecture (collaboration with the Arch-E), flowering (flowering date and rising), floral development (in conjunction with the RDP, ENS Lyon) , production of perfume (with BvPAM, University of St Etienne) and resistance to pathogens (financed "ROSA fortissimi" with ASTREDHOR, Valinov and FNPHP, 2010-2013).
 The genetic determinism of various phenotypic traits has been studied in several populations of F1 rose. These populations, installed in the field, are derived from crosses between species and the characters studied were used to map major genes and QTLs governing these characters. Several characters have been mapped flowering (flowering date, number of petals, rise of flowering) (Hibrand St. Oyant et al., 2008) as well as architectural components (Kawamura et al., 2011).
 The genes involved in pathways regulating flowering (Foucher et al., 2008) were mapped and some co-localize with regions that govern phenotypic traits (Remay et al., 2009, Kawamura et al., 2011) .
This mapping has allowed the development of microsatellite markers of types that have been, among others, used to construct a consensus map Rose 4 linking maps constructed from different populations and in collaboration with teams of German, American and Dutch (Spiller and al., 2011)

 The team is also involved in the international consortium on genomics with the aim of the rose genome sequencing.

See also

Here, the others researches of the team

Axe 2

Molecular basis of Recurrent blooming

We try to understand the molecular basis of the rise of flowering that is an important issue concerning the control of flowering in plants Polycarp.
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