Structural analysis of soybean pods and seeds subjected to weathering deterioration in pre-harvest

Abstract The objective of this work was to analyze structurally the pods and seed coats soybean (Glycine max) cultivars, as well determine quality seeds when subjected deterioration by weathering in pre-harvest. A 7×3 factorial arrangement used – seven cultivars three volumes simulated rainfall (0, 54, 162 mm). Exposure R8 phenological stage. Then, plants were taken a greenhouse, where they kept until time collection seeds. After collection, following evaluations carried out: tetrazolium test, lignin content coats, structural analysis (exocarp, mesocarp, endocarp thickness) (epidermis, hypodermis, parenchymal-cell thickness). Pre-harvest 54 mm reduces seeds; however, response differs according cultivar. tolerance all greater for BRSMT Pintado, BRS Jiripoca, M8210IPRO lower 1010IPRO. Pods with thickness exocarp, high show resistance vigor viability. hypodermis testa is related obtainment high-quality