Phytoparasitica (2015) 43, 355-364

Moisés Roberto Vallejo-Pérez, Daniel Téliz-Ortiz, María T. Colinas-León, Rodolfo De La Torre-Almaraz, Guadalupe Valdovinos-Ponce, Daniel Nieto-Ángel and Daniel L. Ochoa-Martínez (2015)
Alterations induced by Avocado sunblotch viroid in the postharvest physiology and quality of avocado 'Hass' fruit
Phytoparasitica 43 (3), 355-364
Abstract: Avocado sunblotch viroid (ASBVd) is an economically important pathogen that reduces the yield and quality standards of infected avocado trees. There are no reports on the effects of the viroid in the postharvest quality of avocado fruits. The present study has focused on three phenotypic classes: asymptomatic fruits harvested from vigorous trees (AF-V), asymptomatic fruits harvested from trees of regular vigor (AF-R) and symptomatic fruits harvested from trees expressing the disease (SF-S). The water loss was similar in the three fruit classes. The abnormal firmness condition, skin color and size reduction occurred only in SF-S fruits, which did not ripe uniformly due to reduced CO₂ and ethylene production. The proximal analyses showed no significant differences in the variables analyzed, except for the lipid content and dry matter, which was lower in SF-S and AF-R fruits. ASBVd affects physiology and postharvest quality of symptomatic avocado fruits. In contrast, the ripening process of AF-V and AF-R fruits was normal and their physical characteristics and nutrient input were not altered, therefore, these fruits were classified as Supreme Quality, Extra Size (221-265 g) and Premium (172-210 g) according to the NMX-FF-016-SCFI-2006 standards.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Moisés Roberto Vallejo-Pérez, Daniel Leobardo Ochoa-Martinez

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
damage/losses/economics

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Avocado sunblotch viroid	Avocado (Persea americana)	Mexico