Postharvest diseases in citrus and characterization of the fungal population in Sao Paulo`s wholesale market


Autoria(s): FISCHER, Ivan. H.; LOURENCO, Silvia A.; AMORIM, Lilian
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

18/10/2012

18/10/2012

2008

Resumo

The purposes of this workwere to characterize postharvest injuries and to evaluate the physicochemical characteristics of`Nra` and `Lima`oranges and `Murcott` tangor at Ceagesp market, as well as to characterize the environmental mycoflora in retail points at Ceagesp in 2006. Fruits collected at retail points were stored for 14 days at 25 degrees C and 85-90% RH. The incidence of injuries was visually evaluated every three days. The physicochemical characteristics analyzed were titratable acidity and soluble solids amount. The environmental mycoflora was sampled according to the gravimetric method, using Petri dishes containing potato-dextrose-agar medium+pentabiotic opened for two minutes. The average rot incidences in `Pera` and `Lima` oranges and `Murcott` tangor were 12.8, 14.9 and 25.8%, respectively, at the end of the storage period, and green mold was the main postharvest disease. Associations between physicochemical parameters and rot incidence was, in general, not significant. The environmental fungal population varied significantly between the sampling months in retail points with an average of 25.3 cfu/plate. Penicillium and Cladosporium were the most recorded genera of fungi. Positive correlation (r=0.96) was observed between frequency of P digitatum found in the environment of retail points and the green mold in on-sale fruits of `Pera` orange. However, for `Lima` orange and `Murcott` tangor such a correlation was not verified.

Identificador

TROPICAL PLANT PATHOLOGY, v.33, n.3, p.219-226, 2008

1982-5676

http://producao.usp.br/handle/BDPI/19137

http://apps.isiknowledge.com/InboundService.do?Func=Frame&product=WOS&action=retrieve&SrcApp=EndNote&UT=000262384100007&Init=Yes&SrcAuth=ResearchSoft&mode=FullRecord

Idioma(s)

por

Publicador

SOC BRASILEIRA FITOPATHOLOGIA

Relação

Tropical Plant Pathology

Direitos

closedAccess

Copyright SOC BRASILEIRA FITOPATHOLOGIA

Palavras-Chave #Citrus #fungal diseases #Penicillium digitatum #SUSCEPTIBILITY #Plant Sciences
Tipo

article

original article

publishedVersion