Abstract

In the search for efficient and sustainable methods for the management of Fusarium rot in melon, the present study aimed to evaluate the efficiency of the thermotherapy, whether it's used alone or in combination with alternative products to Magnate®, in melons inoculated with two isolates of Fusarium falciforme. The effect of the treatments on fruit quality was evaluated using physicochemical parameters, disease severity, and enzymatic analyses. The in vitro experiments showed that the lowest concentration (0.0625% v/v) of cinnamon essential oil was the most effective in controlling the mycelial growth of both isolates, demonstrating comparable effects to those observed with Copper Crop® and Magnate®. In the in vivo experiments, treating fruits with thermotherapy combined with Cooper Crop® greatly reduced melon rot decreased the damage caused by the two isolates of F. falciforme and was more effective than Magnate®. This treatment produced a lower level of hydrogen peroxide in the inoculated fruits, thereby maintaining cell membranes. It contains antifungal compounds inherent to its composition and exerts an influence on the enzyme’s peroxidase and polyphenoxidase, thereby inducing the defense mechanism of the fruit. Therefore, thermotherapy combined with Cooper Crop® can be used to manage melon rot as an alternative to Magnate®.

中文翻译：

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热疗联合替代产品防治镰状镰刀菌瓜类腐烂病

摘要

在寻找有效和可持续的方法来管理甜瓜镰刀菌腐烂病的过程中，本研究旨在评估热疗法的效率，无论是单独使用还是与 Magnate® 替代产品结合使用，在接种了两种镰孢菌腐烂病菌株的甜瓜中镰状镰刀菌。使用理化参数、疾病严重程度和酶分析来评估处理对水果品质的影响。体外实验表明，最低浓度（0.0625% v/v）的肉桂精油对于控制两种分离菌的菌丝体生长最有效，与 Copper Crop® 和 Magnate® 观察到的效果相当。在体内实验中，热疗结合Cooper Crop®处理水果大大减少了瓜类腐烂，减少了两种镰状镰刀菌分离株造成的损害，并且比Magnate®更有效。这种处理在接种的水果中产生了较低水平的过氧化氢，从而维持了细胞膜。它含有其成分固有的抗真菌化合物，并对酶的过氧化物酶和多酚氧化酶产生影响，从而诱导水果的防御机制。因此，热疗法与 Cooper Crop® 相结合可作为 Magnate® 的替代方案来控制瓜腐病。