Home > XV International Citrus Congress > Evaluation of lemon hybrids and clonal selections for tolerance to ‘mal secco’ disease

Articles

Evaluation of lemon hybrids and clonal selections for tolerance to ‘mal secco’ disease

Article number

1448_65

Pages

515 – 522

Language

English

Abstract

Mal secco is a tracheomycotic disease caused by the fungus Plenodomus tracheiphilus, which has caused significant damage to the citrus industry in the Mediterranean for over 100 years.
Several Citrus species can be affected, but lemons and citron are particularly susceptible.
Identifying resistant or tolerant cultivars is a key focus for lemon growers.
To explore potential sources of resistance, a phenotypic survey was conducted on lemon and lemon-like germplasm in southern Italy at CREA experimental farms in Sicily and Calabria, where pathogen pressure is high.
Over four years, about 200 accessions in each experimental farm were phenotyped visually and molecularly, using real-time PCR to detect the pathogen even without symptoms.
The study found sources of tolerance in some lemon clones and hybrids.
These findings offer valuable insights for selecting tolerant lemon cultivars and for breeding for resistance to mal secco.

Publication

XV International Citrus Congress

Authors

P. Caruso, M.P. Russo, R. Russo, M. Cortese, C. Arlotta, D. Pietro Paolo, S. Di Silvestro, M. Cambrea, A. Trovato, M. Caruso

Keywords

citrus, disease resistance, lemon breeding, phenotyping

Full text

https://doi.org/10.17660/ActaHortic.2026.1448.65

Groups involved

Division Tropical and Subtropical Fruit and Nuts

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