Study the resistance of new created varieties and lines of melons to the causative agent of fusarium wilting Fusarium oxysporum f. sp. melonis (race 0) under the greenhouse conditions

Petar Chavdarov

Abstract: Fusarium wilt on melons is the most harmful fungal disease, both in Bulgaria and in countries along the entire Mediterranean coast. The strong development of the disease leads to a significant reduction in yield and quality of production. The genetic resistance to this pathogen is the best sustainable strategy to control the disease. In 2019, a study on the immune responses of ten new created melon lines to the causative agent of Fusarium wilt Fusarium oxysporum (Schlecht.) Snyder et Hansen f.sp. melonis (L et C) Snyder et Hansen was conducted. The study was done under controlled conditions and artificial infectious in the vegetation house of IPGR - Sadovo. All melon lines were provided by the Company “Agrotop” - Gorna Oryahovitsa. The results of the study showed differences in the resistance of the materials to the fungus Fusarium oxysporum f. sp. melonis. Depending on their response, the tested lines were separated by cluster analysis of resistance and sensitivity. The resistant lines can be successfully used as a potential initial material in future breeding programs to create pathogen-resistant melon varieties.

Keywords: breeding program; Fom race 0; genetic resistance; melons

Date published: 2023-04-25