的敏感性
1United States Department of Agriculture - Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center, Parlier, CA 93648.
Plant disease
|June 5, 2023
概括
纳塔amycin有效地控制了在普通话水果中的粘菌腐烂. 将纳他素与酸盐相结合,特别是在更高的温度下,可显著降低疾病发病率,并保持有效性,即使延迟应用.
科学领域:
- 农业科学 农业科学
- 植物病理学 植物病理学
- 食品科学 食品科学 食品科学
背景情况:
- 由Mucor piriformis引起的粘菌腐烂是加利福尼亚 mandarins 生产日益增加的收获后威胁.
- 纳塔米辛是一种新型生物杀剂,现在可以用于类和其他水果的收获后处理.
研究的目的:
- 为了确定Mucor piriformis对纳塔米辛的基线敏感性.
- 评估单独和与酸盐或碳酸结合使用的纳他的疗效,以控制"坦戈"果上的粘菌腐烂.
主要方法:
- 在体外测定纳塔米的EC50和MIC值与M. piriformis分离物相比.
- 在20°C或50°C下,在注射的果上使用纳塔米辛 (920微克/毫升),有或没有3%的酸盐 (PS) 或3%的碳酸 (SC).
- 在5°C储存2,3,4周后评估粘菌腐烂的发生率.
主要成果:
- 纳塔素对M. piriformis的平均EC50和MIC值分别为0.59微克/毫升和<1.0微克/毫升.
- 与对照组相比,单独使用纳塔米辛可以减少70%以上的粘液腐烂.
- 在50°C时,纳塔米辛和3%PS的组合可使疾病发病率降低92.5%,并延迟应用 (6-12小时注射后) 维持有效性.
结论:
- 纳塔米辛是一种有前途的生物杀剂,用于管理收获后的麻疹腐烂.
- 将纳他素与酸盐结合起来,特别是在高温下,可以增强疾病控制.
- 优化储存时间对于维持纳他素治疗的疗效至关重要.
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