SEED is a platform founded in 2012, and a registered association since 2013, is engaged in practical work, pedagogical and polical for the interantion and evolution of the diversity of ules plants. SEED promotes traditional varieties of fruits, vegetables and cereals as well as other plants. ules through the multiplication of seeds and seedlings and their utilisation in farms and gardens. Therefore, SEED supports the development of value chains for seed and seedlings of traditional varieties and their derivatives on local markets. SEED is also committed to the improvement of the legal status of traditional varieties, to the seed sovereignty of farmers, horticultivators and gardeners and the recognition of the profession of artisan seeds. Objecif: Cultivated biodiversity At the level of cultivated food plants, SEED bases its work for biodiversity on two axes: The genetic diversity of cultivated plants, which is expressed by the richness of traditional varieties in the different regions of the world, and The process of adaptation and evolution (on farm and in situ) of plants cultivated in the framework of the interactions plant-environment (symbioses with the soil microbiome, abiotic and biotic stresses, impact of farming methods etc.). SEED is not opposed to centralised and privatised seed production, but works to promote the promotion of local seeds and seedlings in decentralised systems. Locally cultivated biodiversity and seed sovereignty of the nations are considered two indispensable pillars for sustainable food security. The disappearance of traditional varieties, genetic erosion, 75% of which was identified by the FAO in 1999, is known to be a major cause of food insecurity still making progress since the beginning of the 21st century and must be stopped and reversed as a matter of urgency.