ANÁLISE DO EFEITO DO RASGO NO TEGUMENTO DE SEMENTES DE SOJA SOBRE A PATOLOGIA E QUALIDADE FISIOLÓGICA

Abstract

The frequency of tegument rupture is a fairly frequent advent in the seeds of some soybean cultivars, and their impact on seed physiology and sanity is uncertain. The objective of this work was to analyze the effect of tear on soybean seed coat (Glycine max) on pathology and physiological quality. The cultivars NS 8338 IPRO (with higher incidence of tegument trait) and NS 6906 IPRO (with lower incidence of tegument trait) were used. The experiment in a completely randomized design using the methodologies proposed by RAS. Physiological quality was assessed by tetrazolium test before and after storage; and sanitary quality through the "Blotter Test". Tear in the seed coat of soybean contributed to the damage by moisture affecting the inner part of the seed. The incidence of Fusarium sp. and Aspergillus sp. was relevant in seeds with presence and trait, and in seeds without presence of the trait (around 9-10%), but did not interfere in seed quality. The presence of tear in the integument is crucial in increasing moisture damage and did not serve as a gateway to the fungi that cause damage to seed emergence.