Abstract

LEZCANO, J. C; ALONSO, O; TRUJILLO, Marialys  and  MARTINEZ, E. Fungal agents associated to disease symptoms in seedlings of Moringa oleifera Lamarck. Pastos y Forrajes [online]. 2014, vol.37, n.2, pp. 166-172. ISSN 0864-0394.

The objective of this study was to diagnose and identify the pathogens associated to diverse disease symptoms in Moringa oleifera seedlings, specifically in the provenances Supergenius and Nicaragua. The plant material (leaves and stems with spots, necrosis and leaf chlorosis and seedling wilting) was collected at the organoponic garden of the Pasture and Forage Research Station Indio Hatuey and was disinfected, to isolate and identify the causative agents. This was done from the cultural and morphological characterization of the isolations, which were cultivated on glass Petri dishes sterilized, of 9 cm diameter with the media potato and dextrose agar and carnation leaf agar, and using taxonomic keys. The presumptive diagnosis allowed to identify the presence of Colletotrichum dematium (Pers.) Grove and Fusarium solani (Mart.) Sacc., in the affected seedlings. The former was mainly linked to such symptoms as chlorosis, stem necrosis and leaf spots small and rounded , light brown at the center and dark brown at the edge, located on the face and the back, and spread over the leaf lamina; while the latter was related to stem spots and necrosis and wilting and death of the M. oleifera seedlings.

Keywords : Colletotrichum dematium; fungal diseases; Fusarium solani.

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