Effect of the application of inducers on soursop fruit (Annona muricata L.): postharvest disease control, physiological behaviour and activation of defense systems

The application of chitosan (Chi) alone or in combination with methyl jasmonate (MJ) and salicylic acid (SA) in soursop infected with C. gloeosporioides and R. stolonifer in vivo as well as quality parameters (pH, total soluble solids, firmness and titratable acidity), respiration rate, ethylene pro...

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Bibliographic Details
Published in:Emirates journal of food and agriculture 2018-12, Vol.30 (12), p.1019-1025
Main Authors: R. González-Estrada, Efigenia M-González, Anelsy Ramos-Guerrero, Ramsés, Porfirio Gutiérrez-Martínez, Patricia Miranda-Castro
Format: Article
Language:English
Subjects:
Acidity
Acids
Annona muricata
Chitosan
Defense
Disease control
Enzymatic activity
Enzymes
Ethylene
Firmness
Food quality
Fruits
Fungicides
Methyl jasmonate
Orchards
Order parameters
Pathogens
Peroxidase
Pesticides
Physiology
Phytopathogenic fungi
Polyphenol oxidase
Resistance to control
Respiration
Salicylic acid
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Summary:The application of chitosan (Chi) alone or in combination with methyl jasmonate (MJ) and salicylic acid (SA) in soursop infected with C. gloeosporioides and R. stolonifer in vivo as well as quality parameters (pH, total soluble solids, firmness and titratable acidity), respiration rate, ethylene production and defense related enzyme activities were investigated. Diseases caused by phytopathogenic fungi at postharvest stage are a serious problem throughout the world. The pathogens evaluated in this study were isolated from orchards in Nayarit, Mexico. The coating application of 1.0% Chi - 0.1 mM MJ - 6 mM SA on fruit inoculated with C. gloeosporioides and 0.5% Chi- 0.1 mM MJ on fruit inoculated with R. stolonifer were more effective to reduce the disease incidence and the extension of the lesion on soursop rather than the application of Chi, MJ or SA alone. In order to maintain quality parameters Chi and inducers were applied on fruits. During the storage time quality parameters of fruit were maintained. The respiration rate and ethylene production decreased with the application of the treatments combination. Higher activities of PPO (polyphenol oxidase), and POD (peroxidase) were evidenced with the combination of treatments compare to control. The application of chitosan, methyl jasmonate and salicylic acid is a suitable method for postharvest disease control of soursop during storage time as well as to maintain the fruit quality.
ISSN:2079-052X
2079-0538
DOI:10.9755/ejfa.2018.v30.i12.1883