Respostas do genótipo, tratamento de sementes e condições de armazenamento no potencial fisiológico de sementes de soja

Abstract

The objective of this work was to evaluate the effects of different chemical treatments on the physiological quality of seeds of different soybean genotypes after storage in different storage environments. The treatments were the combinations of four varieties; two chemical treatments, the mixture of the fungicides fludioxonil + metalaxyl, the insecticide thiamethoxam and control (no chemical); three different storage systems: cold chamber; silo bag and warehouse. The design was a completely randomized design with four replicates, in a 4x3x3 factorial scheme. Tukey test were used to analyze data, with 5% significance level. From results, it is concluded that the quality of soybean seeds was influenced by the genotype and storage conditions, being these factors more limiting than the treatment of seeds with pesticide. Warehouse storage presented better conditions for the viability of soybean seeds. Storage conditions at 80% of relative humidity affect the physiological quality of the varieties. It is possible to store the seeds treated with the active ingredients used for the period of 180 days in storage.