ABSTRACT This study aimed to evaluate the Ultraviolet-C (UV-C) radiation effects on the physiological and sanitary quality of seeds of two soybean cultivars (BRS7380 and M7739). We used a completely randomised design in a 2 × 5 factorial scheme with four replicates. The treatments consisted of two soybean cultivars: BRS7380 and M7739 and five UV-C radiation doses: 0 – control; 10.4; 20.7; 31.1; 41.4 kJ m−2. Physiological and sanitary quality tests were carried out to evaluate the influence of UV-C radiation on the seeds. The dose of 31.1 kJ m−2 promoted the best physiological quality results for cultivars M7739 and BRS 7380, presenting better germination (98% and 87%, respectively), accelerated aging (97% and 91%, respectively), radicle length (13.4 and 12.9 cm, respectively), hypocotyl length (8.9 and 10.7 cm, respectively), dry mass of radicle (11.5 and 7.6 mg seedling−1, respectively) and dry mass of hypocotyl (21.8 and 28.3 mg seedling−1, respectively). Despite presenting the greatest reduction in the incidence of fungi (80% and 100% for BRS7380 and M7739, respectively), the dose of 41.4 kJ m−2 is detrimental to the physiological quality of the seeds. Thus, the dose of 31.1 kJ m−2 is the most viable and brings greater benefits to soybean-producing sector.

中文翻译：

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UV-C辐射改善大豆生理卫生品质

摘要 本研究旨在评估紫外线-C (UV-C) 辐射对两种大豆品种 (BRS7380 和 M7739) 种子生理和卫生品质的影响。我们在具有四次重复的 2 × 5 因子方案中使用了完全随机设计。处理包括两个大豆品种：BRS7380 和 M7739 和五种 UV-C 辐射剂量：0 – 对照；10.4; 20.7; 31.1; 41.4 kJ m−2。进行了生理和卫生质量测试，以评估 UV-C 辐射对种子的影响。31.1 kJ m−2 的剂量促进了品种 M7739 和 BRS 7380 的最佳生理质量结果，表现出更好的发芽率（分别为 98% 和 87%）、加速老化（分别为 97% 和 91%）、胚根长度（分别为 13.4和 12.9 厘米，分别），下胚轴长度（分别为 8.9 和 10.7 厘米），胚根的干重（分别为 11.5 和 7.6 毫克幼苗-1）和下胚轴的干重（分别为 21.8 和 28.3 毫克幼苗-1）。尽管真菌发生率的降低幅度最大（BRS7380 和 M7739 分别为 80% 和 100%），但 41.4 kJ m-2 的剂量对种子的生理质量有害。因此，31.1 kJ m-2 的剂量是最可行的，并为大豆生产部门带来更大的好处。