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Objectif Végétal : une dynamique partenariale

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    Research results

    Research results

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    • Measurement of visual quality at the service of plant breeding
    • Control of branching through innovative ways
    • Towards healthier ornamental plants!
    • Recurrent blooming, a controllable trait at last!
    • The fragrance of the rose at hand
    • Towards roses without thorns

    The researchers of the IRHS (Research Institute in Horticulture and Seeds) study the physiological and molecular mechanisms associated with these morphological or physiological characteristics. This knowledge is essential for the improvement of breeding programs and the development of innovative cropping systems. The IRHS works in collaboration with the GRAPPE (ESA-INRA) unit to better integrate consumer’s expectations into the innovation processes of professionals.


    Measurement of visual quality at the service of plant breeding

    The shape of the plant is an important ornamental criterion which determines its commercial value.

    The CIFRE thesis carried out by the DESMARTIS nurseries in collaboration with the research units IRHS and GRAPPE made it possible to develop a method for objective measurement of the visual quality of a rose bush.

    → This method is transferable to other ornamental species and allows to consider visual quality in your breeding programs.



    Gilles Galopin

    gilles.galopin @ agrocampus-ouest.fr

    Rachid Boumaza




    Control of branching through innovative ways

    The IRHS has elucidated genetic, physiological and molecular mechanisms underlying bud bursting and stem growth in response to various environmental factors:





    Interests for the professionals :

    • Improve technical itineraries by modulating environmental factors, to:
      • Set up or maintain a plant shape
      • Free from growth regulators
      • Produce organs or metabolites of interest
    • Select varieties for their architecture


    Towards healthier ornamental plants!





    Recurrent blooming, a controllable trait at last!

    The molecular and physiological characterization of the recurrent flowering gene (Iwata et al., 2012, Randoux et al., 2013, 2014) opens interesting pathways for the control of flowering in the rose bush by the environment (Starter project INRA-BAP ) and by biotechnological means GENIUS Investissements d’avenir project, 2012-2018.

    The GENIUS project, in collaboration with the nurseries and rose gardens Georges Delbard, deals with cellular engineering. It aims at technological improvement and innovation for the plants of a sustainable agriculture.

    Fabrice Foucher

    fabrice.foucher @ inra.fr




    The fragrance of the rose at hand

    In collaboration with the team of Sylvie Baudino (BvPAM, University of Saint-Etienne), the researchers identified the gene RhNUDX1 as responsible for perfume in rose (published in Science); this gene is a potential marker of perfumed varieties of roses!


    Fabrice Foucher

    fabrice.foucher @ inra.fr

    Sylvie Baudino




    Towards roses without thorns

    In collaboration with the Flower Research Institute (Kunming, China), the IRHS studies and characterizes the genes involved in the appearance of thorns in the rose

    Ningning Zhou Thesis, 2017-2020


    Fabrice Foucher

    fabrice.foucher @ inra.fr




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    Looking for partners?

    Two contacts to support your projects:


    • Aurore Gautier,

    contact to support your R&D projects land to put you through

    aurore.gauthier @ vegepolys.eu


    • Tanegmart Redjala,

    close interface with the laboratories of the Research Federative Structure Quasav.

    tanegmart.redjala @ univ-angers.fr