Root architecture characterization in relation to biomass allocation and biological nitrogen fixation in a collection of European soybean genotypes

Soybean [ Glycine max (L.) Merr] is the legume with largest cultivated area worldwide and its yield depends largely on symbiotic nitrogen fixation root architecture. This study aimed to explore genetic variability of architectural traits di-nitrogen fixing activity in a small collection nine European cultivars belonging same maturity group during their early stages. New image analysis approaches were implemented characterise architecture at high throughput. Significant was identified for width system, density, fixation. allowed us highlight trade-offs among nodule traits, structural functional traits. Finally, both approach results could be used breeding programs soybean, that take into account system architecture, when plant interacts symbiosis N 2 -fixing bacteria.