End-of-day far-red lighting combined with blue-rich light environment to mitigate intumescence injury of two interspecific tomato rootstocks

Eguchi, Tomomi; Hernández, Ricardo; Kubota, Chieri

doi:10.17660/actahortic.2016.1134.22

Cited by 13 publications

(16 citation statements)

References 14 publications

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“…In the present experiment, we found that severity of intumescences in leaves decreased as the percent B PF increased and intumescence symptoms were completely eliminated by 100B treatment. The decreased of intumescence development by the increase B PF has been reported before (Eguchi et al, 2016a;Eguchi et al, 2016b;Wollaeger and Runkle, 2014). For example, Wollaeger and Runkle (2014) showed that intumescence development in tomato "Early girl" was lower under 50% B and 100% B than 0% B (100% R) treatment.…”

Section: Effects Of B:r Pf Ratios On Intumescence For 'Beaufort' Tomatomentioning

confidence: 68%

“…This is supported by the present study since the plants under the CWF treatment received a small amount of UV-B radiation coming from the fixture (aprox 0.35 µmol m -2 s -1 , 280-320 nm). Research also showed that far-red light could mitigate intumescence development (Eguchi et al, 2016a;Eguchi et al, 2016b;Morrow and Tibbitts, 1988). On a parallel study, we examined the effect of end-of-day far red (EOD-FR) on intumescence injury of "Beaufort", and demonstrated that EOD-FR at a very low dosage (1 mmol m -2 d -1 ) significantly decreases intumescence development compared to a 10B:90R treatment without EOD-FR treatment ((Eguchi et al, 2016a;Eguchi et al, 2016b).…”

Section: Effects Of B:r Pf Ratios On Intumescence For 'Beaufort' Tomatomentioning

confidence: 99%

“…Spectral customization can be used to increase desirable plant characteristics. For example, special light formulations can increase plant growth rate and production (Eguchi et al, 2016a;Ouzounis et al, 2016;Runkle and Park, 2016), increase the concentration of secondary metabolites in plant tissue (Goto et al, 2016;Li and Kubota, 2009;Nicole et al, 2016;Noguchi and Amaki, 2016;Samuoliene et al, 2012), promote plant development (Gilberto et al, 2005), and generate desirable plant morphology (Chia and Kubota, 2010;Hernández and Kubota, 2015;Jeong et al, 2014;Yang et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Tomato seedling physiological responses under different percentages of blue and red photon flux ratios using LEDs and cool white fluorescent lamps

Hernández

Eguchi

Devecí

et al. 2016

Scientia Horticulturae

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Lamp spectral customization can be a strategy to achieve desirable plant characteristics when plants are grown under sole-source electric lighting. Vegetable transplants can be efficiently and economically grown under indoor-production systems with electrical lighting; however, speciesspecific light recipes have to be developed to improve plant growth, development and morphology, as well as to reduce electrical consumption. The objective of this study was to evaluate the growth and morphology of tomato transplants to a broad range of blue to red (B:R) photon flux (PF) ratios under LEDs and cool white fluorescent lamps (CWF). Tomato "Komeett" and "Beaufort" seedlings were grown in a climate control growth chamber. Using LEDs, seven light treatments with different blue (B), green (G) and red (R) PF ratios were used: 100R, 10B:90R, 20B:28G:52R, 30B:70R, 50B:50R, 75B:25R and 100B. In addition, a CWF treatment served as the control. Hypocotyl length of "Komeett" decreased with the increase of percent B PF up to 75% B. Plant leaf area was 64-72% greater under treatments emitting both B and R PF than in the 100 B and 100 R treatments. Similarly, tomato "Komeett" fresh mass, dry mass, leaf

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Section: Effects Of B:r Pf Ratios On Intumescence For 'Beaufort' Tomatomentioning

confidence: 68%

Section: Effects Of B:r Pf Ratios On Intumescence For 'Beaufort' Tomatomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tomato seedling physiological responses under different percentages of blue and red photon flux ratios using LEDs and cool white fluorescent lamps

Hernández

Eguchi

Devecí

et al. 2016

Scientia Horticulturae

View full text Add to dashboard Cite

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“…On the contrary, tomato plants under similar R-B combinations showed a normal leaf development, indicating that, within the same botanical family, plant sensitivity to spectral-dependent disorders vary among the species (Massa et al 2008). High B proportion combined with small dose of end-of-day (EOD) FR can suppress intumescence injury in tomato (Eguchi et al 2016). In tomato grown in a climatic chamber at PPFD of 200 μmol m −2 s −1 , R:B (2:1 ratio) induced a significant increase of leaf net photosynthesis and a significant decrease of leaf lamina thickness compared to WF light (Arena et al 2016).…”

Section: Vegetable Cropsmentioning

confidence: 99%

Light-Quality Manipulation to Control Plant Growth and Photomorphogenesis in Greenhouse Horticulture: The State of the Art and the Opportunities of Modern LED Systems

Paradiso

Proietti

2021

J Plant Growth Regul

289

121

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Light quantity (intensity and photoperiod) and quality (spectral composition) affect plant growth and physiology and interact with other environmental parameters and cultivation factors in determining the plant behaviour. More than providing the energy for photosynthesis, light also dictates specific signals which regulate plant development, shaping and metabolism, in the complex phenomenon of photomorphogenesis, driven by light colours. These are perceived even at very low intensity by five classes of specific photoreceptors, which have been characterized in their biochemical features and physiological roles. Knowledge about plant photomorphogenesis increased dramatically during the last years, also thanks the diffusion of light-emitting diodes (LEDs), which offer several advantages compared to the conventional light sources, such as the possibility to tailor the light spectrum and to regulate the light intensity, depending on the specific requirements of the different crops and development stages. This knowledge could be profitably applied in greenhouse horticulture to improve production schedules and crop yield and quality. This article presents a brief overview on the effects of light spectrum of artificial lighting on plant growth and photomorphogenesis in vegetable and ornamental crops, and on the state of the art of the research on LEDs in greenhouse horticulture. Particularly, we analysed these effects by approaching, when possible, each single-light waveband, as most of the review works available in the literature considers the influence of combined spectra.

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“…This variable was not measured in experiment I. A visual assessment for the severity of intumescence was conducted at 9 and 4 weeks after transplanting in experiments I and II, respectively, using a 1 to 6 subjective scale based on Eguchi et al [35] with modifications, where 1 = no intumescence injury; 2 = 1% to 10% of the plant affected and minimal isolated intumescence on terminal leaves; 3 = 11% to 50% of the plant affected and dense intumescence on the terminal leaflets with pronounced topical necrotic spotting; 4 = 51% to 75% of the plant affected, pronounced upward leaf curling, and prolific top leaf surface necrosis; 5 = 76% to 100% of the plant affected and full senescence of leaflets; and 6 = complete abscission/senescence.…”

Section: Methodsmentioning

confidence: 99%

Effects of Daily Light Integral on Compact Tomato Plants Grown for Indoor Gardening

Cruz

Gómez

2022

Agronomy

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Our objective was to characterize the growth, physiological responses, fruit yield, and quality of tomato (Solanum lycopersicum L.) plants grown under different daily light integrals (DLIs) and photoperiods. In experiment I, nine compact tomato cultivars were grown indoors using broadband white light-emitting diode (LED) fixtures. Plants were grown under low (10.4 mol·m−2·d−1) and high (18.4 mol·m−2·d−1) DLIs with 12 and 16 h photoperiods, respectively, and two intermediate DLIs of 13.8 mol·m−2·d−1 with either 12 or 16 h photoperiods. In experiment II, three compact tomato cultivars were grown under the same low DLI with either 8 or 12 h photoperiods, and the same high DLI with either 12 or 16 h photoperiods. Generally, higher DLIs decreased plant growth and increased the fruit yield. Changing the DLI delivery strategy by adjusting the photoperiod and photosynthetic photon flux density (PPFD) did not have major effects on the growth, yield, and fruit quality of the compact tomato plants evaluated in this study, even though net photosynthesis increased under higher PPFDs in experiment II. Although several cultivars were affected by intumescence, only two cultivars showed treatment responses, for which the severity was generally higher in lower PPFDs using the same DLI.

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End-of-day far-red lighting combined with blue-rich light environment to mitigate intumescence injury of two interspecific tomato rootstocks

Cited by 13 publications

References 14 publications

Tomato seedling physiological responses under different percentages of blue and red photon flux ratios using LEDs and cool white fluorescent lamps

Tomato seedling physiological responses under different percentages of blue and red photon flux ratios using LEDs and cool white fluorescent lamps

Light-Quality Manipulation to Control Plant Growth and Photomorphogenesis in Greenhouse Horticulture: The State of the Art and the Opportunities of Modern LED Systems

Effects of Daily Light Integral on Compact Tomato Plants Grown for Indoor Gardening

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