Quantification of postharvest diseases of guava accessions cultivated in organic system

Author(s)

Juliana Altafin Galli ^[1] ; Ivan Herman Fischer ^[2] ; Maria Cecília de Arruda Palharini ^[3] ; Marcos Doniseti Michelotto ^[4]

Affiliation

^[1] Agência Paulista de Tecnologia dos Agronegócios - Brasil

^[2] Agência Paulista de Tecnologia dos Agronegócios - Brasil

^[3] Agência Paulista de Tecnologia dos Agronegócios - Brasil

^[4] Agência Paulista de Tecnologia dos Agronegócios - Brasil

• Document type: Journal article
• Source: Pesqui. Agropecu. Trop.; v. 45, n. 2, p. 225-230, 2015-06-00.

Abstract

ABSTRACT Quantification of postharvest diseases of guava accessions cultivated in organic system Among the postharvest diseases that occur in guava, anthracnose, black spot and stem-end rot are the most common. The incidence and diversity of these diseases depend on the host genotype. This study aimed to identify and quantify the postharvest diseases of guava accessions cultivated in organic system. For the characterization of diseases, 30 fruits from 48 accessions were evaluated in a completely randomized design. Anthracnose and black spot were the most frequent postharvest diseases in guava. The Vermelha Redonda (Shimoda), L5P21, L3P12, EEF-3, IAC-4 -Unesp and Monte Alto -Comum 1 accessions stood out with the lowest incidence of anthracnose and black spot, while L4P13, L1P2 and Creme Arredondada (Unesp) showed the highest incidence of anthracnose, black spot and stem-end rot. The Fusicoccum sp., Phomopsis sp., Phoma sp., Dothiorella sp. and Lasiodiplodia sp. pathogens were identified as the main responsible for causing stem-end rot symptoms. (AU)

• FAPESP's process: 12/03807-0 - Characterization of guava trees accesses for resistance to pests and diseases and commercial ability for possible use in organic system
• Grantee: Juliana Altafin Galli
• Support Opportunities: Regular Research Grants