Regulation of the Photon Spectrum on Growth and Nutritional Attributes of Baby-Leaf Lettuce at Harvest and during Postharvest Storage.

ABSTRACT: The photon flux density (PFD) and spectrum regulate the growth, quality attributes, and postharvest physiology of leafy vegetables grown indoors. However, limited information is available on how a photon spectrum enriched with a broad range of different wavebands regulates these factors. To determine this, we grew baby-leaf lettuce 'Rouxai' under a PFD of 200 µmol m-2 s-1 provided by warm-white (WW; control) light-emitting diodes (LEDs) supplemented with either 30 µmol m-2 s-1 of ultraviolet-A (+UV30) or 50 µmol m-2 s-1 of blue (+B50), green (+G50), red (+R50), or WW (+WW50) light. We then quantified growth attributes and accumulated secondary metabolites at harvest and during storage in darkness at 5 °C. Additional +G50 light increased shoot fresh and dry weight by 53% and 59% compared to

SUBMITTER: Vastakaite-Kairiene V 

PROVIDER: S-EPMC8000317 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature