This study aimed to characterize the resistance of 31 passion fruit (Passiflora sp.) genotypes to Fusarium oxysporum f. sp. passiflorae (FOP). About 20 seedlings of each genotype were inoculated by immersing the roots in a suspension of 106 macroconidia mL-1 for five minutes and then transplanting them into pots containing a mixture of soil and sterile substrate. They were evaluated daily for 120 days for the occurrence of wilt symptoms and death. These data were used to calculate the area under the disease progress curve, for survival analysis and grouping. The mortality rate ranged from 0 to 100% and the AUDPC ranged from 0 for genotypes without symptoms of the disease to 6,650.63 for the hybrid HFOP-01. Genotypes were classified into four subgroups: resistant, moderately resistant, susceptible and highly susceptible. The resistance was genotype dependent, but no significant variation was found between the purple and the yellow P. edulis.
Identification of passion fruit genotypes resistant to Fusarium oxysporum f. sp. passiflorae
Aline dos Santos Silva,E. J. Oliveira,F. Haddad,F. Laranjeira,O. Jesus,S. A. S. Oliveira,M. A. P. Costa,J. P. X. Freitas
Published 2013 in Tropical Plant Pathology
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- Publication year
2013
- Venue
Tropical Plant Pathology
- Publication date
2013-06-01
- Fields of study
Agricultural and Food Sciences, Biology
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