Amount Of Light Research Articles

The effect of adjusting fruit loading by pruning on the yield and quality of sweet pepper in low light conditions

Pruning and light quality and quantity can affect the fruit load, fruit shape, nutritional value, and quality of sweet pepper. The experiment was arranged as a split-plot conducted in a randomized block design. Treatments consisted of keeping 3, 5, and 7 fruits on the bush, and having un-pruned (P3, P5, and P7 Pnon=without pruning) sweet pepper (Capsicum annuum L., cv. Lumos) with 3 replications. Two greenhouses including 14,000 for the full-light one and 6000-Lux for the low one were designed. The results showed that carotenoid biosynthesis and accumulation were highly related to light, with a significant effect in the full light greenhouse, as compared with the low one. Leaves carbohydrate content was raised in P3 and P5 for both greenhouses and this was more significant in the full light greenhouse, as compared with the low one. TSS was higher in full light with pruning (P3, P5, P7); the highest TSS in the low-light greenhouse was seen in P3. Phenol, antioxidant, vitamin C, and organic acid were higher in the full light greenhouse, as compared with the low one. Conclusively, pruning was more effective on weight after increased growth of bush in the second or third harvest. Longer shape and less flushing are favored by pepper producers. This can be achieved in the full light greenhouse with P3 and then P5 pruning.

Investigating mean room surface exitance values for office lighting

Mean room surface exitance (MRSE) is a metric proposed to assess lighting quantity within a new design methodology focused on ambient and target illumination. This research builds upon findings from previous research examining the suitability of MRSE as a metric for assessing ambient illumination brightness levels and illumination adequacy for offices. An experiment was conducted to investigate a finding from previous studies that a linear relationship existed between perceived adequacy of illumination (PAI) and MRSE. It was found that the relationship diverges from linear once the scale of MRSE values is extended above the 100 lm/m2. This study also suggests a relationship between spatial brightness and MRSE for an extended range of MRSE values up to 1400 lm/m2. The findings from this research provide insight into a tentative range of MRSE levels that may be suitable for an office environment.

Red Light and Glucose Enhance Cytokinin-Mediated Bud Initial Formation in Physcomitrium patens.

Growth and development of Physcomitrium patens is endogenously regulated by phytohormones such as auxin and cytokinin. Auxin induces the transition of chloronema to caulonema. This transition is also regulated by additional factors such as quantity and quality of light, carbon supply, and other phytohormones such as strigolactones and precursors of gibberrelic acid. On the other hand, cytokinins induce the formation of bud initials following caulonema differentiation. However, the influence of external factors such as light or nutrient supply on cytokinin-mediated bud initial formation has not been demonstrated in Physcomitrium patens. This study deals with the effect of light quality and nutrient supply on cytokinin-mediated bud initial formation. Bud initial formation has been observed in wild type plants in different light conditions such as white, red, and blue light in response to exogenously supplied cytokinin as well as glucose. In addition, budding assay has been demonstrated in the cry1a mutant of Physcomitrium in different light conditions. The results indicate that carbon supply and red light enhance the cytokinin response, while blue light inhibits this process in Physcomitrium.

Усан дахь кластер бүтцийн амьдрах насыг үнэлэх асуудалд

The dynamics of liquid water have been investigated experimental on the molecular level by the scattering light. It is shown that there the scattering light quantity associated with optical nonhomogeneous molecular structures in water. The life time of the nonhomogeneous structures is analysed by the Fourier method.

Development of a Deep-Sea Submersible Chemiluminescent Analyzer for Sensing Short-Lived Reactive Chemicals.

Based on knowledge of their production pathways, and limited discrete observations, a variety of short-lived chemical species are inferred to play active roles in chemical cycling in the sea. In some cases, these species may exert a disproportionate impact on marine biogeochemical cycles, affecting the redox state of metal and carbon, and influencing the interaction between organisms and their environment. One such short-lived chemical is superoxide, a reactive oxygen species (ROS), which undergoes a wide range of environmentally important reactions. Yet, due to its fleeting existence which precludes traditional shipboard analyses, superoxide concentrations have never been characterized in the deep sea. To this end, we have developed a submersible oceanic chemiluminescent analyzer of reactive intermediate species (SOLARIS) to enable continuous measurements of superoxide at depth. Fluidic pumps on SOLARIS combine seawater for analysis with reagents in a spiral mixing cell, initiating a chemiluminescent reaction that is monitored by a photomultiplier tube. The superoxide in seawater is then related to the quantity of light produced. Initial field deployments of SOLARIS have revealed high-resolution trends in superoxide throughout the water column. SOLARIS presents the opportunity to constrain the distributions of superoxide, and any number of chemiluminescent species in previously unexplored environments.

Sex Differences in Desiccation Tolerance Varies by Colony in the Mesic Liverwort Plagiochila porelloides.

Water scarcity, a common stress factor, negatively impacts plant performance. Strategies to cope with it, such as desiccation tolerance, are becoming increasingly important to investigate. However, phenomena, such as intraspecific variation in stress responses have not received much attention. Knowledge of this variability and the environmental drivers can be leveraged to further investigate the mechanisms of desiccation tolerance. Here we tested for variation in desiccation tolerance in Plagiochila porelloides among colonies and sexes within the same riparian zone. Field-collected dehardened plants were subjected to a desiccation event, under controlled conditions and then rehydrated. Plant water status, photosynthetic rates, net carbon gain, and efficiency of photosystem II (PSII) were assayed to evaluate tissue desiccation, basic metabolic processes and plant recovery. To establish a linkage between plant response and environmental factors, field light conditions were measured. We detected intraspecific variation, where a more exposed colony (high percentage of open sky, large temporal range of light quantity, and high red/far-red ratio) showed sex differences in desiccation tolerance and recovery. Overall, PSII recovery occurred by 72 h after rehydration, with a positive carbon gain occurring by day 30. This within species variation suggests plastic or genetic effects, and likely association with light conditions.

Photoacclimation and Light Thresholds for Cold Temperate Seagrasses.

Water quality deterioration is expected to worsen the light conditions in shallow coastal waters with increasing human activities. Temperate seagrasses are known to tolerate a highly fluctuating light environment. However, depending on their ability to adjust to some decline in light conditions, decreases in daily light quantity and quality could affect seagrass physiology, productivity, and, eventually, survival if the Minimum Quantum Requirements (MQR) are not reached. To better understand if, how, and to what extent photosynthetic adjustments contribute to light acclimation, eelgrass (Zostera marina L.) shoots from the cold temperate St. Lawrence marine estuary (Rimouski, QC, Canada) were exposed to seven light intensity treatments (6, 36, 74, 133, 355, 503, and 860 μmol photons m–2 s–1, 14:10 light:dark photoperiod). Photosynthetic capacity and efficiency were quantified after five and 25 days of light exposure by Pulse Amplitude Modulated (PAM) fluorometry to assess the rapid response of the photosynthetic apparatus and its acclimation potential. Photoacclimation was also studied through physiological responses of leaves and shoots (gross and net primary production, pigment content, and light absorption). Shoots showed proof of photosynthetic adjustments at irradiances below 200 μmol photons m–2 s–1, which was identified as the threshold between limiting and saturating irradiances. Rapid Light Curves (RLC) and net primary production (NPP) rates revealed sustained maximal photosynthetic rates from the highest light treatments down to 74 μmol photons m–2 s–1, while a compensation point (NPP = 0) of 13.7 μmol photons m–2 s–1 was identified. In addition, an important package effect was observed, since an almost three-fold increase in chlorophyll content in the lowest compared to the highest light treatment did not change the leaves’ light absorption. These results shed new light on photosynthetic and physiological processes, triggering light acclimation in cold temperate eelgrass. Our study documents an MQR value for eelgrass in the St. Lawrence estuary, which is highly pertinent in the context of conservation and restoration of eelgrass meadows.

Analysis of Phytochrome-Dependent Seed Germination in Arabidopsis.

Light-dependent seed germination guarantees seedling proximity to the soil surface, enabling quick photosynthetic energy supply. While seedling hypocotyl length is mainly used in phytochrome physiological assays to determine the functional impact of photoreceptor point mutations, different intracellular localizations, or the function of signal transduction components, phytochrome-controlled seed germination offers a different, very sensitive tool to test the phytochrome photoreceptor network. Photon fluences as low as 1nmolm-2 are sufficient to elicit the phytochrome A (phyA)-dependent very low fluence response (VLFR), whereas higher fluences (> 10μmolm-2) are needed to elicit the phyB-controlled and phyB-photoreversible low fluence response (LFR). Taking advantage of the different sensitivities of both phytochromes to different light qualities and quantities, a screening protocol is presented to score germination under different light conditions.

An Experimental Investigation on the Role of LEDs on the Lifetime Performance of Consumer LED Luminaires

Solid-state lighting technology currently dominates illumination technologies, which have been growing throughout time. LEDs are a semiconductor-based illumination solution that is energy-efficient, long-lasting, and capable of meeting all application requirements for quantity of light, colour and spatial limitations. In all of the essential lighting applications, LED reliability and lifetime performance are critical. The LED luminaire’s performance may decline over time, resulting in lower light output or different colours than the required colour characteristics. The importance of LED performances in LED luminaires as a system has only lately been realised. Different LEDs are used in two commercially available LED luminaires with exact electrical and optical specifications that are exposed to accelerated working conditions. The paper outlines a method for analysing and forecasting lifetime based on lumen maintenance for light output, Duv for colour-based quantification. The xy chromaticity, spectral power distribution, and SEM-EDS analysis are used to detect the characteristics indicative of variations in LED light output performance with degradation. The findings imply that LED packaging and device physics are important factors in the LED luminaire’s overall lifetime performance. The work gives consumers the opportunity to see specifics about luminosity and colour-based changes as a product data-sheet, making it easier for them to choose appropriate luminaires for their needs. It also aids LED and LED luminaire makers in making appropriate design and technological adjustments, resulting in improved LED performance that is longlasting and consistent in colour stability.

Evaluating Digital Twin light quantity data exchange between a virtual and physical environment

Building Information Management (BIM) and Digital Twin (DT) technology can optimise lighting to support human health and well-being and the building’s energy performance. The data exchange between a physical and virtual environment was investigated, focusing on a scenario in which optimal interaction between daylight and electric light derives an optimised realisation of a given light demand curve. Investigation and validation of a DT model were done using a virtual room simulated in DIALux Evo and its physical twin for three levels of geometrical complexity. The results show the influence of model complexity and consequences on the speed of information exchange.

A new photoelectrochemical reactor designed for solar hydrogen fuel production: Experimental study

A novel photoanode configuration of meshy type dome design is examined to exploit the maximum accessible light during available sun time at any solar rays angle due to its unique structure. This photoanode shape aims to receive the maximum light quantity by utilizing the possible illumination area. Also, the meshy design lets the solar ray spread into the body of the dome photoanode at any solar rays angle. Titanium dioxide is prepared to coat the stainless steel photoanode using the sol–gel dip-coating method. Two concentrations of potassium dioxide solution are used to study the electrolyte solution conductivity effects on the hydrogen production rate and the associated energy and exergy efficiencies. The vertical and tilted light boundaries are studied to evaluate the enhancement of the hydrogen production rate and the corresponding system efficiencies due to the new dome mesh photoanode design. The present experimental results indicate that increasing the solution concentration significantly affects the hydrogen production rates and associated system efficiencies. The greatest hydrogen mass production rates produced at 0.25 M KOH under artificial tilted (45°) and vertical light boundaries are 31.55 µg/s and 32.22 µg/s, respectively. The overall energy and exergy system efficiencies can be reached to be 5.98% and 4.08% under vertical light, while it is 5.89% and 4.02% at tilted light boundaries. The development of the hydrogen production rate obtained at artificial tilted light boundaries changes between 74% and 80% compared to the enhancement which occurred at vertical artificial light boundaries.

An Evaluation of Light Quantity and Quality in Reading Rooms, and Suggestions for Amendments; the Case of Shahid Beheshti University libraries

دریافت نور روز در فضاهای ساخت انسان‌ در شمار مهم‌ترین عوامل ارتقای کیفیت زیست در این محیط‌ها محسوب می‌گردد. این عامل در کاربری‌هایی با نیازهای خاص، مانند سالن‌های مطالعه، اهمیت دوچندان می‌یابد. به‌طورکلی کمیت و کیفیت دریافت نور روز در یک فضا با استفاده از شاخص‌های مختلفی قابل‌ارزیابی است. در این پژوهش عملکرد بصری سالن‌های مطالعة هفت دانشکدة دانشگاه شهید بهشتی در شهر تهران از طریق شبیه‌سازی با نرم‌افزار رادیانس ارزیابی و شاخص‌های مربوطه محاسبه و سپس این مقادیر با استانداردهای ملی و بین‌المللی مقایسه شده است. در گام بعد، به منظور بهبود شرایط بصری، راهکارهایی پیشنهاد و در هرکدام از فضا‌های مورد بررسی، متناسب با نتایج اولیه، اعمال شده و میزان اثرگذاری هرکدام از راهکارها بر بهبود کمیت و کیفیت نور روز عرضه گردیده است. در این مقاله صحت مدل‌های شبیه‌سازی، با استفاده از برداشت میدانی، بررسی گردیده و بعد به‌منظور مطالعة میزان تأثیرات متناظر با هریک از راهکارهای مورد بررسی در حوزة کفایت و توزیع نور در فضا، آسایش بصری (خیرگی)، و انرژی روشنایی مورد نیاز استفاده شده‌اند. درنهایت، بر اساس نتایج به‌دست‌آمده در بخش شبیه‌سازی و هزینه‌های به‌کارگیری آن‌ها، راهکارهایی برای هر فضا پیشنهاد شده است. بر اساس ارزیابی اولیة کتابخانه‌های مورد بررسی، ، در پنج مورد مشکلْ دریافت نشدن نور کافی در روز و در یک کتابخانه دریافت بیش از حد نور و وجود خیرگی بوده است، یک کتابخانه هم مشکلی در این زمینه نداشت. مقادیر مربوط به توزیع نور روز (UDI300-3000) در فضاهای دارای مشکل در دریافت نور روز، از بازة 6 تا 59٪ در مدل پایه به مقادیر 24 تا 100٪ ارتقا یافته است. مؤثرترین راهکارها برای بهبود وضعیت کتابخانه‌ها افزایش و بهبود ضریب بازتاب نور با رنگ‌آمیزی مجدد سطوح فضا، اجرای نورگیر سقفی، و ارتقای ضریب عبور نور شیشه‌ها با حفظ و نگه‌داری و یا تغییر شیشه‌های فضا بوده است. همچنین مصرف انرژی الکتریکی متناظر با نورپردازی مصنوعی در کتابخانه‌ها از 4 تا 58٪ بهبود داشته است. نتایج این پژوهش می‌تواند راهنمایی اجرایی برای ارتقای عملکرد فضاهای کتابخانه‌ای از نظر دریافت نور روز، آسایش، و مصرف انرژی روشنایی در فضاهای کتابخانه‌ای باشد.

Identification of rare-earth minerals associated to K-feldspar: Capacsaya project in Peru

A recently discovered the rare-earth-rich site in Capacsaya, located at 123 km northwest of Cusco, at the south of Peru, contains significant quantities of light and heavy rare-earth elements such as neodymium, lanthanum, cerium, europium, and yttrium. This work reports the identification of rare-earth elements and their associated minerals using scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction analyses. Five (5) samples extracted from different locations at the Capacsaya site were characterized and identified K-feldspar as the mineral associated with the rare-earth elements in a representative sample with a high concentration of lanthanum and cerium. The results showed rare-earth elements contained within the mineral phase monazite, being cerium the dominant element in the phase (La, Ce, Nd)PO_4. Finally, through the electrostatic separation process we demonstrate that it was possible to achieve an efficient separation of the K-feldspar phase in the particle size range 75–150 upmum.

Efektivitas Daylight Mirror Shaft sebagai Sistem Pencahayaan Alami Ruang Bawah Tanah pada Langit Tropis

Title: Effectiveness of Daylight Mirror Shafts as Natural Daylighting System for Basements under Tropic Sky Conditions Basements have lots of potential as functional spaces, but have mostly been neglected due to lighting issues. Therefore, this study will explore the daylight mirror shaft system as a daylight strategy for basements, which features the placement of a reflecting surface on a light shaft to redirect daylight. The system was introduced by Heliobus®, a daylighting company from Switzerland. To see the effectiveness of implementing the system in Indonesia, a study was made on its performance on the climate sky condition. Furthermore, a study was made on the effect of different opening orientations and light shaft placements toward the illuminance level achieved. The lighting data was obtained using the simulation softwares Lightstanza. Results show that the performance of the system on climate sky condition can provide sufficient light for 41% of a basement. The use of mirrors on the light shaft could also increase the lighting levels by 2.1 times compared to a shaft without a mirror. Moreover, it was found that different opening orientations and light shaft placements didn’t give a significant effect on the lighting quantity. Overall, the study shows that the system’s implementation on climate skies still require adjustments through further studies to be effective.

Characterizing Genotype-Specific Rice Architectural Traits Using Smart Mobile App and Data Modeling

The quantity and quality of light captured by a plant’s canopy control many of its growth and development processes. However, light quality-related processes are not very well represented in most traditional and functional–structural crop models, which has been a major barrier to furthering crop model improvement and to better capturing the genetic control and environment modification of plant growth and development. A main challenge is the difficulty in obtaining dynamic data on plant canopy architectural characteristics. Current approaches on the measurement of 3D traits often relies on technologies that are either costly, excessively complicated, or impractical for field use. This study presents a methodology to estimate plant 3D traits using smart mobile app and data modeling. Leaf architecture data on 16 genotypes of rice were collected during two crop seasons using the smart-app PocketPlant3D. Quadratic Bézier curves were fitted to leaf lamina for estimation of insertion angle, elevation angle, and curve height. Leaf azimuth angle distribution, leaf phyllotaxis, canopy leaf angle distribution, and light extinction coefficients were also analyzed. The results could be used for breeding line selection or for parameterizing or evaluating rice 3D architectural models. The methodology opens new opportunities for strengthening the integration of plant 3D architectural traits in crop modeling, better capturing the genetic control and environment modification of plant growth and development, and for improving ideotype-based plant breeding.

Influence of scale on the daylighting system evaluation in physical models: Experimental method based on objective and subjective measurements

The daylight evaluation in architectural spaces can be carried out using several tools and methods of investigation and analysis. However, many types of research have proven the usefulness of the scale models to evaluate daylighting system performances in buildings. Several scales of a physical model have been used varying between (1:50) and real scale (1:1), and no comparative study has been done to evaluate the effect of the model size in daylighting assessment. The objective of this investigation is to make a comparison between two different scales of a physical model: the first one is a model with a scale of (1:12) while the second is with the scale of (1: 4), aiming to study the scale effects on daylight perception with models equipped with a daylighting system under very high exterior illuminance levels. The methodology of this study consists in collecting simultaneously the measurement of the exterior and interior illuminance level (lux) and subjective evaluations from a questionnaire survey with the two scale models (1:4 and 1:12) under real sky conditions. A correlation between collected data has been explored. Comparing the measurement results, it is obvious that the quantity of light that penetrates the test models (1:4 and 1:12) was the same. The results are with a range of ±1.6%. Moreover, survey results show that the participants’ perceptions regarding satisfaction, light distribution and glare questions differ with the scale of the physical 3D model. The subjects felt more satisfied with the luminous atmosphere with the physical model of (1:4) compared with the model of (1:12).

Polyamine Metabolism under Different Light Regimes in Wheat.

Although the relationship between polyamines and photosynthesis has been investigated at several levels, the main aim of this experiment was to test light-intensity-dependent influence of polyamine metabolism with or without exogenous polyamines. First, the effect of the duration of the daily illumination, then the effects of different light intensities (50, 250, and 500 μmol m–2 s–1) on the polyamine metabolism at metabolite and gene expression levels were investigated. In the second experiment, polyamine treatments, namely putrescine, spermidine and spermine, were also applied. The different light quantities induced different changes in the polyamine metabolism. In the leaves, light distinctly induced the putrescine level and reduced the 1,3-diaminopropane content. Leaves and roots responded differently to the polyamine treatments. Polyamines improved photosynthesis under lower light conditions. Exogenous polyamine treatments influenced the polyamine metabolism differently under individual light regimes. The fine-tuning of the synthesis, back-conversion and terminal catabolism could be responsible for the observed different polyamine metabolism-modulating strategies, leading to successful adaptation to different light conditions.

Triacylglycerol biosynthesis in shaded seeds of tung tree (Vernicia fordii) is regulated in part by Homeodomain Leucine Zipper 21.

Light quantity and quality affect many aspects of plant growth and development. However, few reports have addressed the molecular connections between seed oil accumulation and light conditions, especially dense shade. Shade-avoiding plants can redirect plant resources into extension growth at the expense of leaf and root expansion in an attempt to reach areas containing richer light. Here, we report that tung tree seed oil accumulation is suppressed by dense shade during the rapid oil accumulation phase. Transcriptome analysis confirmed that oil accumulation suppression due to dense shade was attributed to reduced expression of fatty acid and triacylglycerol biosynthesis-related genes. Through weighted gene co-expression network analysis, we identified 32 core transcription factors (TFs) specifically upregulated in densely shaded seeds during the rapid oil accumulation period. Among these, VfHB21, a class I homeodomain leucine zipper TF, was shown to suppress expression of FAD2 and FADX, two key genes related to α-eleostearic acid, by directly binding to HD-ZIP I/II motifs in their respective promoter regions. VfHB21 also binds to similar motifs in the promoters of VfWRI1 and VfDGAT2, two additional key seed lipid regulatory/biosynthetic genes. Functional conservation of HB21 during plant evolution was demonstrated by the fact that AtWRI1, AtSAD1, and AtFAD2 were downregulated in VfHB21-overexpressor lines of transgenic Arabidopsis, with concomitant seed oil reduction, and the fact that AtHB21 expression also was induced by shade. This study reveals some of the regulatory mechanisms that specifically control tung tree seed oil biosynthesis and more broadly regulate plant storage carbon partitioning in response to dense shade conditions.

Overview of Multiple Applications of Basil Species and Cultivars and the Effects of Production Environmental Parameters on Yields and Secondary Metabolites in Hydroponic Systems

Basil (Ocimum basilicum L.), including other species and cultivars, is an excellent source of nutritional compounds, the accumulation of which can be stimulated by exogenous factors (environmental and nutritional conditions). Although best practices are relatively established for mature basil plants, microgreens production requires further research to optimize quality and quantity. The study objectives are (i) to provide an overview of the many uses of basil, (ii) collate and present common hydroponic systems available in the market, (iii) review effects of key production environment parameters on basil yields in hydroponic systems, and (iv) summarize the effects of the growth environments on yield quantity and quality of basil microgreens. The paper analyzes in detail key production parameters of basil microgreens in hydroponic systems, such as temperature, humidity, pH, electrical conductivity, dissolved oxygen, carbon dioxide, nutrient solutions, and the influence of light (quantity, quality, and photoperiods). The collated literature review has shown that basil, grown hydroponically, can tolerate high variations of environmental parameters: pH 5.1–8.5, temperature 15–24 °C, relative humidity 60–70%, electrical conductivity up to 1.2 mS cm−1, depending on the developmental stage, dissolved oxygen at 4 mg L−1 (optimally 6.5 mg L−1), and light intensity between 200 and 400 μmol m−2 s−1. The study has synthesized an overview of different production parameters to provide guidance on the optimization of environmental conditions to ensure the quantity and quality production of basil microgreens. Improving the quality of basil microgreens can ideally spur continued gastronomic interest in microgreens in general, which will encourage more entrepreneurs to grow basil and other microgreens. Hence, the study findings are a great resource to learn about the effects of different environments on basil microgreen production. This information can inform research for successful production of different species and cultivars of basil microgreens, and establishing testing protocols to improve the quantity and quality of the harvest.

Continuous Lighting Promotes Plant Growth, Light Conversion Efficiency, and Nutritional Quality of Eruca vesicaria (L.) Cav. in Controlled Environment With Minor Effects Due to Light Quality.

Light-emitting diode lamps can allow for the optimization of lighting conditions in artificial growing environments, with respect to light quality, quantity, and photoperiod extension, to precisely manage resources and crop performance. Eruca vesicaria (L.) Cav. was hydroponically cultured under three light treatments to investigate the effect on yield and nutritional properties of rocket plants. A treatment of (W-12h) having a12/12 h light/dark at 600 μmol m−2 s−1 provided by LEDs W:FR:R:B = 12:2:71:15 was compared with two treatments of continuous lighting (CL), 24 h light at 300 μmol m−2 s−1 provided by cool white LEDs (W-CL), and by LED R:B = 73:27 (RB-CL). CL enhanced the growth of the rocket plants: total fresh biomass, leaf fresh weight, and shoot/root ratio increased in W-CL, and leaf dry weight, leaf dry matter %, root fresh and dry weight, and specific leaf dry weight (SLDW) increased in RB-CL. Total carbon content was higher in RB-CL, whereas total nitrogen and proteins content increased in W-12h. Both W-CL and RB-CL increased carbohydrate content in the rocket leaves, while W-CL alone increased the sugar content in the roots. Fibers, pigments, antioxidant compounds, and malic acid were increased by CL regardless of the light spectrum applied. Nitrate was significantly reduced in the rocket leaves grown both in W-CL and RB-CL. Thus, the application of CL with low light intensity can increase the yield and quality value of rocket, highlighting that careful scheduling of light spectrum, intensity, and photoperiod can improve the performance of the crop.