Initial Growth of Cowpea Cultivars With an Increase of 4.8 ° C in Air Temperature / Crescimento Inicial De Cultivares De Feijão-Caupi Com Aumento De 4,8 ° C Na Temperatura Do Ar

Abstract

Vigorous germination and uniform seedling establishment are determinant and dependent on the performance of cultivars in the face of rising air temperatures. Thus, the objective was to evaluate the initial development of different cultivars of cowpea against the increase of 4.8 ° C in the daily temperature regime. The experiment was carried out in growth chambers, in a 5x2 factorial scheme (cultivars x temperature regimes). It was evaluated: germination percentage, germination speed index, average germination time, average germination speed, average germination speed, the initial seedling length and the