Diallel analysis in cowpea aiming at selection for extra-earliness

Abstract In Brazil, the production of cowpea is concentrated in the Northeast and North; however, in recent years, its cultivation has expanded to the Cerrado biome of the Brazilian Midwest region, where it is incorporated into production arrangements in the form of off-season. In this work, it was carried out a study on the extra-earliness in cowpea in order to select parents and crosses with cycle shorter than 60 days. A test with an F2 generation of a complete diallel cross involving five parents and ten crosses was carried out in a complete randomized block design with six replications. Th...