The effect of light quality on seed germination, seedling growth and selected biochemical properties of Stevia rebaudiana Bertoni

Simlat, Magdalena; Ślęzak, Patrycja; Mos, M; Warchoł, Marzena; Skrzypek, Edyta; Ptak, Agata

doi:10.1016/j.scienta.2016.09.009

Cited by 91 publications

(71 citation statements)

References 50 publications

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“…LEDs, and the highest carotenoid levels under white and red LEDs. This is in contrast to Smilat et al (2016), who verified a higher carotenoid content in Stevia rebaudiana seedlings after being submitted to blue and red + white LEDs (1:1).…”

Section: Resultscontrasting

confidence: 94%

Physiological quality of cucurbits in spectral qualities

Schmidt¹,

Wust

Fontana

et al. 2020

Emir J Food Agric

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The objective of this work was to evaluate the influence of spectral qualities on the germination and vigor of cucurbit seeds. This experiment was a completely randomized design, in a factorial scheme 3 x 6, with three species of cucurbitaceae: cucumber, melon and watermelon. Six spectral qualities were used: blue LED, white LED, red LED, blue + red LED, fluorescent and dark (no light). Variables related to germination and vigor were analyzed. The cucurbitaceae presented differentiated responses when submitted to the different spectral qualities. For cucumber seeds, the luminous spectra increased root length, compared to the dark treatment. The melon seeds had low physiological quality; for these, the dark promoted a higher percentage of germinated and normal seeds. For watermelon seeds, the white LED conditions led to a higher percentage of normal seedlings, high rate of germination (IVG) and lower percentage of dead seeds. Red LED conditioned high IVG in watermelon. In general, fluorescent light favors carotenoid content and the dark condition favors shoot length in cucurbit seeds.

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Section: Resultscontrasting

confidence: 94%

Physiological quality of cucurbits in spectral qualities

Schmidt¹,

Wust

Fontana

et al. 2020

Emir J Food Agric

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show abstract

“…The root length of the RL, BL and YL treatments was significantly higher than in the control. There were similar conclusions in other related studies involving, Stevia rebaudiana Bertoni (Simlat et al, 2016), Cardamine fauriei (Abe et al, 2015), and Rehmannia glutinosa (Manivannan et al, 2015), where exposure to the BL treatment showed the largest leaf numbers. BL is more effective in enhancing fresh weight and dry matter production in buckwheat sprouts (Lee et al, 2014).…”

Section: Biomass Parameter Response Of Ah Roxburghii To Light Qualitysupporting

confidence: 90%

“…Cultured Phalaenopsis 'Fortune Saltzman' seedlings treated with BL for 5 months showed significantly higher responses in terms of chlorophyll a, chlorophyll b and total chlorophyll (Anuchai & Hsieh, 2017). BL contributes positively to chlorophyll synthesis in Stevia rebaudiana Bertoni, and plantlets grown under RL showed the lowest levels of chlorophyll (Simlat et al, 2016). Senger (1982) documented that BL plays an important role in chloroplast development and the formation of chlorophyll.…”

Section: Photosynthetic Pigment Response Of Ah Roxburghii To Light Qumentioning

confidence: 94%

“…In other similar studies, the stomata of different plants responded differently to light quality. In Stevia rebaudiana, BL not only increased the number of stomata but also caused stomatal opening (Simlat et al, 2016). Macedo et al (2011) found that red and blue fluorescent light reduced the number of stomata on the adaxial face and abaxial face of Alternanthera brasiliana leaves, respectively.…”

Section: Stomata Response Of Ah Roxburghii To Light Qualitymentioning

confidence: 99%

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Peer Review #1 of "Effects of supplemental lighting with different light qualities on growth and secondary metabolite content of Anoectochilus roxburghii (v0.1)"

2018

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Background. Anoectochilus roxburghii is a widespread herbaceous plant with high medicinal value. Wild A. roxburghii resources face extinction due to their slow growth rate and over exploitation. The growing market demand has led to advances in the field of artificial planting of A. roxburghii. Methods to increase the economic benefits of cultivation and the production of medicinal ingredients are very useful. Methods. A. roxburghii was exposed to red light (RL), blue light (BL), yellow light (YL), green light (GL) or white light (WL) as supplemental lighting at night (18:00-02:00) in a greenhouse or were left in darkness (control, CK), to investigate the effects of various light qualities on growth indices, photosynthetic pigments, chlorophyll fluorescence, root vitality, stomatal density, soluble proteins, sugars and the accumulation of secondary metabolites. Results. Supplementation of BL had a positive effect on A. roxburghii growth and secondary metabolite accumulation. Leaf number, stem diameter, fresh weight, dry weight, chlorophyll a content, and secondary metabolite (total flavonoids, total polyphenols) content increased significantly. YL treatment showed significantly higher soluble sugar and polysaccharide contents than the control. Discussion. BL treatment was conducive to promoting the growth and accumulation of secondary metabolites (total flavonoids, total polyphenols); YL treatment significantly increased the content of soluble sugar and polysaccharides than the control. Polysaccharides and total flavonoids are the important medicinal ingredient of Anoectochilus, so future research will focus on the combination of blue and yellow light.

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“…Akbarian et al (2016) reported that the plant species reacted differently according to the light source with respect to growth characteristics. Simlat et al (2016) reported that red LED light in Stevia plants significantly increased stem height and root length. Enache and Livadariu (2016) studied on Artemisia dracunculus L. seeds and found out that the higher germination and longer hypocotyl height with Red LED application compared to other applications.…”

Section: Figure 2 the Effects Of Lighting Application On Emerging Ramentioning

confidence: 99%

Farklı Renklerdeki Led Işıkların Rhododendron luteum Sweet Tohumlarının Çıkışı ve Fide Gelişimi Üzerine Etkileri

Ünsal

Altun

2020

Uluslararası Tarım Ve Yaban Hayatı Bilimleri Dergisi

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This study was conducted to determine the effects of LED lights in different colours (Daylight LED, Blue LED, Red LED and Blue LED + Red LED (50%+50%)) on emerging rates of R. luteum seeds and seedling growth). The LED lights were applied to the seeds grown on the acidic peat in foam cups superficially in the form of 16:8 hours (light:dark). The results showed that the emerging rates in seeds subjected to Daylight, Red LED, Red + Blue LED and Blue LED light were determined as 61%, 45.66%, 43%, and 35%, respectively. The effect of different light colors on plant height was significant (p<0.01). Red + Blue LED, Red LED, Blue LED and Daylight LED subjected plants' heights were determined as 10.342 cm, 10.262 cm, 75.06 cm, 7.139 cm, respectively. Diameters of seedlings were determined in Daylight, Blue LED, Red LED, Red + Blue LED subjected seedlings as 0.147 mm, 0.104 mm, 0.085 mm, 0.077 mm, respectively (p<0.01). The number of leaves were determined as 3.547, 2.000, 1.550, 1.302 in daylight, blue LED, red + blue LED and red LED subjected plants, respectively (p<0.01). To conclude, the best emerging rate and seedling growth were obtained from daylight treatment. Although the higher seedlings were obtained from Red+Blue LED and Red LED treatments, these seedlings were found as weak with thinner stem and less leaves.

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The effect of light quality on seed germination, seedling growth and selected biochemical properties of Stevia rebaudiana Bertoni

Cited by 91 publications

References 50 publications

Physiological quality of cucurbits in spectral qualities

Physiological quality of cucurbits in spectral qualities

Peer Review #1 of "Effects of supplemental lighting with different light qualities on growth and secondary metabolite content of Anoectochilus roxburghii (v0.1)"

Farklı Renklerdeki Led Işıkların Rhododendron luteum Sweet Tohumlarının Çıkışı ve Fide Gelişimi Üzerine Etkileri

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