Response of rocket salad germplasm (Eruca and Diplotaxis spp.) to major pathogens causing damping-off,wilting and leaf spot diseases |
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| Authors: | Catello Pane Loredana Sigillo Michele Caputo Giovanna Serratore Massimo Zaccardelli |
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| Institution: | 1. Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Centro di ricerca per l’orticoltura, Pontecagnano, Italy;2. Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Centro di sperimentazione e certificazione delle sementi, Battipaglia, Italy |
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| Abstract: | In the present study, 26 accessions of rocket salad belonging to four species (Eruca sativa Mill., Diplotaxis tenuifolia (L.) DC., Diplotaxis muralis (L.) DC. and Erucastrum spp.) were tested for resistance to damping-off, wilting and leaf spot disease causal agents. High susceptibility to Rhizoctonia solani was detected in all accessions while variability in rocket seedling susceptibility for Sclerotinia assays was observed. Susceptibility to wilting caused by the fungus Fusarium oxysporum f. sp. raphani was tested. E. sativa varieties exhibited a lower severity degree associated to yellowing-related symptoms compared to D. tenuifolia. Resistance assay using the bacterium Xanthomonas campestris pv. campestris was also performed. Five E. sativa varieties showed a disease incidence lower than 60% while all the D. tenuifolia accessions, showed a susceptibility of 100%. The present study represents a step towards the identification of genetic resources useful in breeding for the selections of novel resistant varieties. |
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| Keywords: | Diplotaxis tenuifolia Eruca sativa Fusarium oxysporum Xanthomonas campestris Rhizoctonia solani Sclerotinia minor |
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