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Artículo

Postharvest illumination of alstroemeria: Effect of light quality on flower metabolism and shelf life

Pintos, Federico MartinIcon ; Nico, Andres Ignacio; Rodoni, Luis MariaIcon ; Cieza, Ramón Isidro; Hasperué, Héctor JoaquínIcon
Fecha de publicación: 04/2023
Editorial: Elsevier Science
Revista: Postharvest Biology and Technology
ISSN: 0925-5214
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Agrícolas

Resumen

Despite the good postharvest performance of alstroemeria flowers, leaf yellowing is one of the most important signs of senescence and decay, as well as the flower size and time to abscission. In this work, we tested the effect of 50 μmol m−2 s−1 white (WL, broad spectrum) and red-blue (RBL, 40:60, 630 + 465 nm) light-emitting diodes on cut alstroemeria stored at 20 °C, or WL on cut alstroemeria stored at 5 °C, on postharvest flower quality and vase life. The light-treated floral stems had higher water consumption throughout storage compared to the controls stored in the dark, with no variation in stem diameter. The tepal area was increased by the light treatment at both storage temperatures. The leaf color remained similar to that at harvest in the light-treated flower stems (WL and RBL), while there was a strong yellowing in the controls stored in the dark. Anthocyanins increased mostly in flowers stored under WL, although this was more evident at 20 °C. WL treatment strongly slowed chlorophyll degradation and increased sugar content in leaves and tepals by 3.4 and 1.8 times, respectively, at 20 °C, and by 6 and 2.9 times, respectively, at 5 °C. The increase in sugar levels in light-treated flowers may have caused the tepal expansion but also delayed the onset of leaf senescence, and consequently the tepal abscission. The WL was the most effective storage condition not only to extend cut alstroemeria shelf life, but also to improve the postharvest flower quality, both at room temperature and under refrigeration.
Palabras clave: RED-BLUE LIGHT , SENESCENCE , SUGARS , TEPAL AREA , WHITE LIGHT , YELLOWING
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
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URI: http://hdl.handle.net/11336/225357
DOI: https://doi.org/10.1016/j.postharvbio.2023.112346
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Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Citación
Pintos, Federico Martin; Nico, Andres Ignacio; Rodoni, Luis Maria; Cieza, Ramón Isidro; Hasperué, Héctor Joaquín; Postharvest illumination of alstroemeria: Effect of light quality on flower metabolism and shelf life; Elsevier Science; Postharvest Biology and Technology; 201; 4-2023; 1-8
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