LED Lighting Technique to Control Plant Growth and Morphology

Jishi, Tomohiro

doi:10.1007/978-981-13-1065-2_14

Cited by 9 publications

(16 citation statements)

References 23 publications

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“…The combination of R and B light is optimal for the growth and development of cucumbers [10]. Although the underlying mechanism of plant growth promotion via green (G) light is unclear [11], it has been reported that the addition of G to R and B light promotes the growth of lettuce [12] and induces an effect similar to that of shade avoidance [13]. Far-red (Fr) light has a higher leaf transmittance than R light.…”

Section: Introductionmentioning

confidence: 99%

Red Light Enhances the Antioxidant Properties and Growth of Rubus hongnoensis

Yoon

Park

2021

Plants

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The purpose of this study was to determine the effect of light quality on R.hongnoensis growth, physiology, and antioxidant properties. Five light conditions were employed, including white (control), red (R), blue (B), combined LED of R, green (G), and B at 7:1:2 (RGB), as well as combined LED of R, G, B, and far-red (Fr) at 7:1:2:1 (RGBFr). R light had the greatest growth-promoting effect based on plant height, leaf length, leaf width, stem diameter, and leaf area. However, leaf width and root length exhibited the greatest growth under RGB. The fresh and dry weight of shoots and roots were highest under R and RGB light. Photosynthesis was highest under RGB and lowest under B. Transpiration was highest in RGBFr. Stomatal conductance and photosynthetic water use efficiency were greatest under RGBFr. Total phenol content and radical scavenging activity were highest under R, while total flavonoid content was highest under RGB. Superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) activities were upregulated under W, whereas guaiacol peroxidase (GPX) activity was highest under RGB. The present results suggest that, among the tested light treatments, R light was most conductive for vegetative growth and antioxidant capacity in R. hongnoensis.

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Section: Introductionmentioning

confidence: 99%

Red Light Enhances the Antioxidant Properties and Growth of Rubus hongnoensis

Yoon

Park

2021

Plants

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“…Plant morphology is also affected by photon flux density; therefore, there may be an interaction between these effects. Understanding these effects and these interactions is required to control plant growth and morphology using LEDs [13].…”

Section: Introductionmentioning

confidence: 99%

In Vitro Growth Responses of Ornamental Bananas (Musa sp.) as Affected by Light Sources

et al. 2022

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Light-emitting diodes (LEDs) have become very popular for the production of horticultural crops. LEDs represent an alternative lighting source to regular fluorescent (FL) bulbs, increasing the quality of plants and minimizing production costs. LEDs also provide selective light intensity and quality, suitable for commercial micropropagation. The objective of this study was to evaluate the growth and development of in vitro ornamental bananas under different light sources. Two ornamental banana varieties were selected for this study: Musa ‘Little Prince’ and Musa ‘Truly Tiny’. Light quality and intensity of three different light sources were evaluated: LED-1 (116 μmol m−2 s−1), LED-2 (90 μmol m−2 s−1), and FL (100 μmol m−2 s−1). Length and biomass of plantlets were greater under LED-1 compared to FL but not significantly different from LED-2. The fresh and dry weight of shoots and roots, number of leaves, and number and length of roots were not significantly different between treatments. Chlorophyll content was greater under LEDs. Leaf number and stomata number and size were greater under FL. Our results indicate that shoot length and biomass could be improved by optimizing light quality and intensity. Different responses to light sources between the two banana varieties also indicated a genotype effect.

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“…A multi-species experiment was designed to test a gradient of red and blue lights because these colors have been the focus of many publications in the horticultural domain [ 6 , 28 , 29 ]. Smart LED luminaries were used to create a continuous range of red:blue ratios under otherwise constant conditions, and an imaging platform was used to measure basic phenotypic traits related to growth, morphology, and pigmentation of the plants (plant dimensions, shape factors, color indices).…”

Section: Introductionmentioning

confidence: 99%

LED color gradient as a new screening tool for rapid phenotyping of plant responses to light quality

et al. 2022

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Background The increasing demand for local food production is fueling high interest in the development of controlled environment agriculture. In particular, LED technology brings energy-saving advantages together with the possibility of manipulating plant phenotypes through light quality control. However, optimizing light quality is required for each cultivated plant and specific purpose. Findings This article shows that the combination of LED gradient set-ups with imaging-based non-destructive plant phenotyping constitutes an interesting new screening tool with the potential to improve speed, logistics, and information output. To validate this concept, an experiment was performed to evaluate the effects of a complete range of red:blue ratios on 7 plant species: Arabidopsis thaliana, Brachypodium distachyon, Euphorbia peplus, Ocimum basilicum, Oryza sativa, Solanum lycopersicum, and Setaria viridis. Plants were exposed during 30 days to the light gradient and showed significant, but species-dependent, responses in terms of dimension, shape, and color. A time-series analysis of phenotypic descriptors highlighted growth changes but also transient responses of plant shapes to the red:blue ratio. Conclusion This approach, which generated a large reusable dataset, can be adapted for addressing specific needs in crop production or fundamental questions in photobiology.

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LED Lighting Technique to Control Plant Growth and Morphology

Cited by 9 publications

References 23 publications

Red Light Enhances the Antioxidant Properties and Growth of Rubus hongnoensis

Red Light Enhances the Antioxidant Properties and Growth of Rubus hongnoensis

In Vitro Growth Responses of Ornamental Bananas (Musa sp.) as Affected by Light Sources

LED color gradient as a new screening tool for rapid phenotyping of plant responses to light quality

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