Combined effect of salinity and LED lights on the yield and quality of purslane (Portulaca oleracea L.) microgreens
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Giménez Martínez, Almudena; Martínez Ballesta, María del Carmen; Egea Gilabert, Catalina; Gómez di Marco, Perla Azucena; Artés Hernández, Francisco de Asís; [et al.]Knowledge Area
Producción VegetalSponsors
This project was financed by the Autonomous Community of the Region of Murcia nº 20849/PI/18 through the grant call for projects for the development of scientific and technical research by competitive groups, included in the Regional Programme for the Promotion of Scientific and Technical Research (Action Plan 2018) of the Seneca Foundation-Science and Technology Agency of the Region of Murcia (Spain). The research also received funding from the Italian Ministry of Agricultural, Food and Forestry Policies (MIPAAF), in the framework of the project “Light on Shelf Life” (CUP J56J20000410008). The elaboration of the manuscript was supported by a grant from the Fundación Séneca (reference 20555/IV/18, Call for Fellowships for Guest Researcher Stays at Universities and OPIS of the Region of Murcia) awarded to Francesco Orsini.Publication date
2021Publisher
MDPIBibliographic Citation
Giménez, A.; Martínez-Ballesta, M.d.C.; Egea-Gilabert, C.; Gómez, P.A.; Artés-Hernández, F.; Pennisi, G.; Orsini, F.; Crepaldi, A.; Fernández, J.A. Combined Effect of Salinity and LED Lights on the Yield and Quality of Purslane (Portulaca oleracea L.) Microgreens. Horticulturae 2021, 7, 180. https://doi.org/10.3390/ horticulturae7070180Keywords
MineralsFatty acids
Oxalate
Nitrate
Phytochemical
Antioxidants
Abstract
The present work aims to explore the potential to improve quality of purslane microgreens by combining water salinity and LED lighting during their cultivation. Purslane plants were grown in a growth chamber with light insulated compartments, under different lighting sources on a 16 h d1 photoperiod—fluorescent lamps (FL) and two LED treatments, including a red and blue (RB)) spectrum and a red, blue and far red (RB+IR) LED lights spectrum—while providing all of them a light intensity of 150 _mol m2 s1. Plants were exposed to two salinity treatments, by adding 0 or 80 mM NaCl. Biomass, cation and anions, total phenolics (TPC) and flavonoids content (TFC), total antioxidant capacity (TAC), total chlorophylls (Chl) and carotenoids content (Car) and fatty acids were determined. The results showed that yield was increased by 21% both in RB and RB+FR lights compared to FL and in salinity compared to non-salinity conditions. The nitrate content was reduced by 81% and 91% when microgreens ...
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