Anthracnose of papaya fruit caused by the fungus Colletotrichum gloeosporioides is one of the most economically important postharvest diseases. Hot water immersion (HW) and calcium chloride (Ca) treatments have been used to control papaya postharvest diseases; however, the effect of the combination HW-Ca on the pathogen growth and the development of the disease in infected papaya fruit has been scarcely studied. The aim of this study was to evaluate the effect of the HW-Ca treatment on the in vitro growth of C. gloesporioides conidia and the quality of infected papaya. In vitro, the HW-Ca treated conidia showed reduced mycelial growth and germination. In vivo, the HW-Ca treatment of infected papaya delayed for 5 days the onset of the anthracnose symptoms and improved the papaya postharvest quality. The combined treatment HW-Ca was better than any of the individual treatments to inhibit the in vitro development of C. gloeosporioides and to reduce the negative effects of papaya anthracnose.

中文翻译：

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热水-氯化钙的组合对炭疽菌炭疽菌体外生长和感染木瓜采后品质的影响。

真菌Colletotrichum gloeosporioides引起的木瓜果实炭疽病是最经济的重要收获后疾病之一。热水浸泡（HW）和氯化钙（Ca）处理已被用于控制木瓜收获后疾病。然而，很少研究HW-Ca组合对感染木瓜果实中病原体生长和疾病发展的影响。这项研究的目的是评估HW-Ca处理对C. gloesporioides分生孢子体外生长和被感染木瓜质量的影响。在体外，经HW-Ca处理的分生孢子显示出菌丝生长和发芽减少。体内，感染木瓜的HW-Ca处理将炭疽病症状的发作推迟了5天，并改善了木瓜的采后质量。联合处理的HW-Ca优于任何单个处理，都能抑制球孢梭菌的体外发育并减少木瓜炭疽病的负面影响。