Abstract

PACHECO, Carlos; GONZALEZ, María Suleima  and  MANZANILLA, Edward. Fungi diversity in five mango cultivars from germplasm bank of INIA-CENIAP, Maracay. Bioagro [online]. 2016, vol.28, n.3, pp.201-208. ISSN 1316-3361.

The experimental field of the Centro Nacional de Investigaciones Agropecuarias (CENIAP), INIA, Maracay, Venezuela, poses a germplasm bank, with a very high mango diversity, but lately, the death of several accessions has been detected. Among the factors associated to this losses are the diseases induced by fungi. The objective of this study was to determine the diversity of fungi in leaves and branches in Criollo, Hadden, Hilacha, Kent and Tommy Atkins mango cultivars. Five trees were evaluated for each cultivar and ten-leaves samples coming from five branches were collected at random. The fungi on natural substrate were processed and fungal structures of taxonomical value were compared with the specialized literature. The Richness, frequency, and the indexes of diversity (either from Shannon-Wierner or Margalef), evenness (Pielou) and similarity (Sorensen) were recorded. The total richness was determined in 48 species. Kent cultivar had the greatest richness, in addition to the highest values of diversity and evenness. The cultivars with the highest similarity of species were Kent and Tommy Atkins. It was registered by first time Anopeltis venezuelensis and Neofusicoccum mangiferae in leaves, and N. parvum in stems, associated with branch dieback in mango.

Keywords : Abundance; diversity index; evenness; richness; similarity.

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