Root Traits Related with Drought and Phosphorus Tolerance in Common Bean (Phaseolus vulgaris L.)

Roots are key organs for water and nutrient acquisition transport. Therefore, root phenes that associated with adaptation to low phosphorus (P) environments could enhance top-soil exploration, while deeper allocation is important acquiring mobile nutrients. The understanding of interactions among can help in the development common bean (Phaseolus vulgaris L.) genotypes adapted drought fertility through genetic improvement. Two experiments (pot field) were conducted at Agricultural Research Institute Mozambique assess contribution shoot biomass grain yield under combined stress (drought P). pot study assessed eight genotypes, four treatments combining regimes non-stress) levels (200 25) mg P kg?1 soil. In field study, 24 also grown high (40 kg ha?1 without application) irrigation limited water. from fields correlated data on traits. response appeared be related deep shallow systems, respectively. Deep rooted produced more total taproot lateral branching density, which resulted length stress, had less branching. Increased was higher mean values density length. Genotypes SER 125, BFS 81, FBN12111-66 MER 22 11-28 showed a greater score tap highest stress. these recommended use environment or serve as parents improving efficiency tolerance bean.