Impactos em sementes de feijão Vigna causados pelas operações na unidade de beneficiamento e seus efeitos sobre a viabilidade.

Abstract

In the processing of seeds, soon after the crop and it thrashes, these are directed tha Plant of Improvement of Seeds, where through elevators the machines of before-cleaning, cleaning, separation and classification, treatment, packing and storage are led. This work was developed to investigate the mechanical impacts suffered by the seeds of two varieties of bean vigna (Cedinha and Rabo of Tatu) with two moisture contents (13,5% and 7,3% w.b.) to the they go by the operations imposed after the crop and it thrashes and your consequences in elapsing of the storage. The seeds were used with purity above 95%, so that it could submit them the operations of Plant of Improvement of Seeds. In each operation place samples were collected to analyze and to veriíy the damages happened through the impacts. The work samples were soon submitted to the germination tests and the different vigor tests. And, soon after, other samples were stored in the environmental conditions of Alagoinha - PB, and in the controlled conditions of camera it evaporates in Campina Grande - PB. The seeds with the humidity 7,3% of the variety Rabo de Tatu are more fragile the break caused by the impacts during the improvement process; the seeds of the two studied varieties, demonstrated in the face of the time of storage, the suffered impacts and the initial humidity tenors, tendencies and a same behavior, although with different amounts although with different amounts and that the suffered impacts for the seeds during your improvement didn't exercise immediate effects on the germination and the vigor of the seeds. The vigor test that best correlated with the standard test of germination it was the index of emergency speed, with a correlation coefficient above 97%, could be used in the evaluation of the vigor of those seeds.