RELACÕES ENTRE A CLASSIFICAÇÃO E A QUALIDADE DAS SEMENTES DE FEIJÃO (Phaseolus vulgaris L.)

Abstract

Brazil is the world's largest producer of Phaseolus vulgaris L. bean specie,however the average productivity is still low. The seed quality is directly correlated with the crop productivity and its profit. In a lot of bean seeds, the best results are from biggest seeds. Therefore the results vary and there is no consensus on how and under what conditions this might occur. Thus, the objective of this research was evaluate the relationship between seed quality and seed sieve classification. Some results, related to physical and physiological parameters, showed the best quality of seeds classified by thickness in 5,5 mm sieve compared to seeds classified in 4,76 mm and 4,3 mm sieves.For field results, there was seed size influence for height of pod insertion, number of pods per plant and number of seeds per pod, with a decrease in plants grown from seeds with a thickness of 4.36 mm. Then, there is difference in seed bean quality, cultivar IPR Tangará, classified by thickness; the yield compounds were affected by seed bean classification; bean seed classified by thickness in 4,9 mm sieve reduced yield.