Enhancement of photosynthesis efficiency and yield of strawberry (Fragaria ananassa Duch.) plants via LED systems

Abstract

Due to advances in the industrial development of light-emitting diodes (LEDs), much research has been conducted in recent years to get a better understanding of how plants respond to these light sources. This study investigated the effects of different LED-based light regimes on strawberry plant development and performance. The photosynthetic pigment content, biochemical constituents, and growth characteristics of strawberry plants were investigated using a combination of different light intensities (150, 200, and 250 μmol m−2 s−1), qualities (red, green, and blue LEDs), and photoperiods (14/10 h, 16/8 h, and 12/12 h light/dark cycles) compared to the same treatment with white fluorescent light. Plant height, root length, shoot fresh and dry weight, chlorophyll a, total chlorophyll/carotenoid content, and most plant yield parameters were highest when illuminated with LM7 [intensity (250 μmol m−2 s−1) + quality (70% red/30% blue LED light combination) + photoperiod (16/8 h light/dark cycles)]. The best results for the effective quantum yield of PSII photochemistry Y(II), photochemical quenching coefficient (qP), and electron transport ratio (ETR) were obtained with LM8 illumination [intensity (250 μmol m−2 s−1) + quality (50% red/20% green/30% blue LED light combination) + photoperiod (12 h/12 h light/dark cycles)]. We conclude that strawberry plants require prolonged and high light intensities with a high red-light component for maximum performance and biomass production.

Improving strawberry plant resilience to salinity and alkalinity through the use of diverse spectra of supplemental lighting

“…Supplemental light helps maintain a balance in redox reactions, preventing the accumulation of excess electrons and minimizing the potential for oxidative stress. This balance is crucial for the overall health and productivity of strawberry plants [ 75 ]. Understanding the intricate relationship between supplemental light and the electron transport chain in strawberry plants requires a holistic approach that considers light intensity, duration, and quality [ 76 ].…”

Optimizing lettuce yields and quality by incorporating movable downward lighting with a supplemental adjustable sideward lighting system in a plant factory

“…Moreover, we measured the fresh weight (FW) and pigment content of the fresh lettuce plant. The shoot length, stem diameter and fresh and dry mass were collected as previously described in Guiamba et al (2022) . According to the description of Pandey & Singh (2011) , the total leaf area (cm 2 ) (summation of leaf areas) was calculated.…”

“…The measurements were taken as previously described in Guiamba et al (2022) for the following parameters: net photosynthetic rate (A), stomatal conductance (gs), leaf transpiration rate (Tr), and intracellular CO2 concentration (Ci). These parameters were used as indicators of the plant’s gas exchange performance.…”

Exploring agro-morphological and fiber traits diversity in cotton (G. barbadense L.)

“…However, these classical techniques have limitations. More advanced molecular breeding utilizing genetic markers and genotyping could overcome these limitations and accelerate cotton improvement [ 5 , 10 , 11 ]. It is an important goal for cotton breeders to predict genetic similarities/dissimilarities and assess genetic diversity among cotton germplasm including genotypes, cultivated species, and wild relatives [ 12 ].…”