Photosynthetic Photon Flux Density Effects on Portulaca olearacea in Controlled-Environment Agriculture.

ABSTRACT: This study aims to evaluate the impacts of the lighting photosynthetic photon flux density (PPFD) on the growth, photosynthesis, and antioxidant response of common purslane (Portulaca oleracea) cultivars to determine energy-efficient lighting strategies for CEA. Green and golden purslane cultivars were cultivated in CEA chambers and four experimental treatments consisting of PPFDs of 150, 200, 250, and 300 ± 10 µmol m^-2s^-1 were performed, representing daily light integrals (DLIs) of 8.64-17.28 mol m^-2d^-1 throughout a 16 h photoperiod. The results show that photoresponses to light PPFDs are cultivar-specific. The green cultivar accumulates 174% more dry weight at 300 PPFD compared to the golden cultivar, and also has a higher LUE, but a low

SUBMITTER: Kudirka G 

PROVIDER: S-EPMC10609831 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature