ABSTRACT

This study aimed at evaluating organic by-products vinasse and cassava wastewater on the sanitary and physiological quality of soybean seeds. Sanity tests, phytoalexin induction and physiological qualities were performed, conducted in a completely randomized design. The sanity test was carried out in a 3 × 5 factorial scheme (two by-products: vinasse – V, cassava wastewater – C and the junction between them – V + C, in five concentrations: 0, 25, 50, 75 and 100%), with 8 repetitions/treatment. In the induction of phytoalexin, a factorial scheme (3 × 4) + 1 – two by-products and their junction, was adopted, with 4 concentrations (25, 50, 75 and 100%), plus an additional witness – with 5 repetitions/treatment, and for the physiological qualities 3 × 5 factorial scheme, described above, with four replicates/treatment. Cassava wastewater has large amounts of sugars, which may have favored the development of pathogens in this treatment. Vinasse had the highest capacity of inhibiting the genera Aspergillus, Cladosporium, and Penicillium, which was explained by the positive relationship between its concentrations and the induction of phytoalexin, being the most effective by-product in fungus control, at concentrations of 75 and 100% and without changing the physiological quality of seeds.

摘要

本研究旨在评估有机副产品酒糟和木薯废水对大豆种子卫生和生理质量的影响。以完全随机的设计进行了健全性测试、植物抗毒素诱导和生理特性。完整性测试在 3 × 5 因子方案中进行（两种副产品：酒糟 – V、木薯废水 – C 以及它们之间的连接处 – V + C，在五个浓度下：0、25、50、75 和 100 %)，重复 8 次/处理。在诱导植物抗毒素时，采用了阶乘方案 (3 × 4) + 1 – 两种副产品及其连接点，采用 4 种浓度（25、50、75 和 100%），加上额外的见证 – 重复 5 次/处理，对于生理质量 3 × 5 析因方案，如上所述，有四次重复/处理。木薯废水含有大量糖分，这可能有利于这种处理中病原体的发展。酒糟抑制该属的能力最高Aspergillus、Cladosporium和Penicillium，这可以通过其浓度与植物抗毒素诱导之间的正相关关系来解释，植物抗毒素是真菌控制中最有效的副产品，浓度为 75% 和 100%，并且不会改变种子的生理质量。