Tolerance Screening for Phytophthora capsici and Fusarium solani f. sp. cucurbitae in Cucurbita spp. and Gene Expression Responses in Mutant Families

Cucurbita species can be affected by soil-borne pathogens, such as Phytopthora capsici and Fusarium solani f. sp. cucurbitae (Fsc). Diverse commercial conserved lines of spp. were tested. C. pepo subsp. genotypes showed the highest susceptibility to both pathogens. The tolerance P. Fsc was then screened in a zucchini mutant population. Two M3 (Cp107 Cp116) with high occurrence tolerant individuals Phytophthora obtained from screening 160 M2 lines. presented higher than background MUCU-16. Furthermore, inoculated samples, mutants overexpressed CpDEF expressed more CpPAL CpChiIV susceptible control. It has been previously shown that this expression pattern could associated - pathosystem. applied breeding programs, they are likely compatible highly genotype.