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Methyl Jasmonate, a Degreening Alternative for Mandarin (Citrus Reticulata L.) Var. Arrayana Fruits


Información de la publicación

Información de la publicación
Tipo de publicación

Científica

Tipología

Investigación y estudios

Medio de publicación

Impreso: Revista de divulgación científica

Resumen

Mandarin accounts for a significant part of the Colombian citrus fruit production, the postharvest degreening of these products to attain pigmentation being a common practice when they are harvested in the tropics. The endogenous signaling molecules such as methyl jasmonate and ethylene are produced during fruit formation, and they play a key role in post-harvest and stress responses. The latter is commonly used to degreen mandarin, which, however, exhibits low sensitivity to this compound. It is therefore important to establish degreening alternatives to ethylene. Thus, the aim of this study was to determine the effect of methyl jasmonate on the degreening of Arrayana mandarin (Citrus reticulata L.). For such purpose, respiration rate, weight loss, color index, total chlorophyll, total soluble solids, firmness and total acidity were determined. The treatments applied were: methyl jasmonate (MeJA) 1 μM 24h, Ethylene (ET) 1000 ppm 20 min, 1-methylcyclopropene (1-MCP) 0.5 μL L-1 2h; and the combinations 1-MCP + MeJA, 1- MCP + ET. Generally obtained with the MeJA and 1-MCP + MeJA treatments, the most significant results took place at 14 days after treatment implementation (DATI) for total titratable acidity, and at 4 DATI for total chlorophyll and color index. The TSS/acid ratio (maturity ratio) became constant since 7 DATI under the MeJA treatment. Thus, the use of MeJA after 1-MCP pretreatment comes to be an interesting degreening option, all the more when considering that these physiological responses have not been reported in previous studies.

Autores

Carlos Alberto Gómez, Aníbal Orlando Herrera, Víctor Julio Flórez, Helber Balaguera-López

Registro ISSN

2248-9622

DOI Artículo Digital http://DOI: 10.9790/9622-0707062229
SNIES Área

Agricultural and Bilogical Sciences

SNIES Categoría

Agricultural and Biological Sciences (miscellaneous)

Fecha de publicación 06 de marzo de 2018
Fecha de aceptación 26 de enero de 2018
Medio indexado (nombre)

Journal of Engineering Research and Application

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