Effects of Light-emitting Diodes on In Vitro
Growth of Virus-free Sweet Potato Plantlets

Yoo, Kyoung-Ran; Lee, Seung-Yeob

doi:10.12972/kjhst.20170052

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…Monochromatic red and blue lights and a combination of red with blue light reportedly affect plant growth and photosynthesis, thus affecting the accumulation of biomass (Darko et al, 2014;Yoo and Lee, 2017;Oh et al, 2019;Shang et al, 2023). However, these outcomes can vary according to the species (Kasajima et al, 2008).…”

Section: Vegetative Growth and Developmentmentioning

confidence: 99%

Vegetative Propagation of Six Pachyphytum Species as Influenced by Different LED Light Qualities

Lee,

Nam

2023

HST

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Pachyphytum, a slow-growing succulent genus, is considered a high-value ornamental plant in high demand as a potted plant. To facilitate and enhance its vegetative propagation, different light-emitting diode (LED) light qualities were used on leaf cuttings. Different light spectrum qualities, i.e., red (peak at 630 nm), blue (peak at 450 nm), purple (peaks at 450 and 650 nm), 3000 K white LED (peaks at 455 and 600 nm), 4100 K white LED (peaks at 455 and 590 nm), and 6500 K white LED (peaks at 450 and 545 nm), were used as treatments for six Pachyphytum species or cultivar, specifically P. compactum, P. glutinicaule, P. machucae, P. oviferum, P. viride, and P. cv. Oviride (P. oviferum × P. viride). The results of this study suggest that the different light qualities studied here significantly affected the growth and development of the Pachyphytum species. The use of blue and 6500 K white LED lights increased survival rates, rooting, and shooting success, while the use of white lights significantly improved shoot and root growth as well as the corresponding fresh and dry weights. However, in terms of the percentage moisture content, the effects of monochromatic red and blue lights, as well as the composite spectral distribution of purple light, were significantly higher compared to the effect of white light. The improvement in root growth and development, and the fresh and dry weights of Pachyphytum species under different light spectra are evidence that the effects of the light quality vary among plant species even when they belong to the same genus. Similarly, the use of different light qualities may be beneficial at certain growth stages for leaf cuttings to promote the optimal development of plant organs. The results of this study provide improved vegetative propagation techniques for Pachyphytum species and other slow-growing succulents propagated through leaf cuttings.

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Section: Vegetative Growth and Developmentmentioning

confidence: 99%

Vegetative Propagation of Six Pachyphytum Species as Influenced by Different LED Light Qualities

Lee,

Nam

2023

HST

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“…발광다이오드(light-emitting diode; LED)가 일반화되면서 온실의 인공광으로 이용하고 있 으며 [9], 광의 파장(광질)을 조절하여 순화 중인 식물의 최적 광조건을 제공함으로써 순화 식물의 생존율과 생육을 개선시 킬 수 있다는 장점이 있다 [8,10]. 국내에서는 식물공장이나 기 내배양에서 인공광을 통한 작물의 재배와 생산을 중심으로 연 구가 진행되고 있어 [11,12] 2). 이는 RL이 식물의 생육에서 항산화 물질이나 효소의 활성을 개선하기 때문으로 사료되며 [28], 체내에 이러한 항산화 물질의 증대에 의해 불량한 환경 이나 온실 적응과정에서 페튜니아의 스트레스에 대한 저항성을 증대시켰기 때문으로 생각된다 [24].…”

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Effects of Acclimatization to Different Light Colors on the Growth of Petunia (Petunia hybrida) in a Greenhouse

Kim¹,

Lee²

2023

Korean Journal of Environmental Agriculture

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Light is an important factor that influences the growth and development of flowering plants. The present study investigated the effects of in vitro acclimatization to different light colors (white light (WL; control), blue light (BL; 447 nm), green light (GL; 519 nm), and red light (RL; 667 nm)) on the growth of petunia (Petunia hybrida) and of hardening cultivation of plant transferred form in vitro to a greenhouse under sunlight. Compared to the control, the shoot length and leaf width of Petunia increased by 42% and 11.7%, respectively, after acclimatization to BL and the shoot growth increased by 29.3% after acclimatization to RL. The chlorophyll and carotenoid contents after acclimatization to BL and GL were 16.7% and 11.3% higher, respectively, and 14.4% and 11.9% higher, respectively, than those in the control. During greenhouse cultivation, the shoot length increased by 16.7% and 11.3%, respectively, after acclimatization to BL and RL, respectively, and the leaf length and leaf width increased by 14.4% and 11.9%, respectively, after acclimatization to GL. While dry weight of root of GL and BL was not significant difference in vitro, increased by 59.0% and 22.9% ex vitro than that of WL. Thus, acclimatization to BL increased the shoot growth and leaf chlorophyll contents, and acclimatization to GL and RL enhanced shoot and root growth, in petunia.

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Effect of Growth Regulator, Sucrose, and Minimal-growth Conservation on In Vitro Propagation of Virus-free Sweet Potato Plantlets

Lee

2020

phpf

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The influence of growth regulators (NAA and BA) and sucrose concentrations (0, 3, 5, 7, 9%) on in vitro rapid-propagation of virus-free sweet potato [Ipomoea batatas (L.) Lam.] was investigated with single-node or shoot-tip culture of two cultivars ('Matnami' and 'Shinhwangmi'). The survival rate and growth of shoot-tip explant was also investigated under the presence or absence of light (blue and red LED = 7:3, 150±5 μmol•m -2 •s -1 PPFD) during minimal-growth in vitro conservation at 15°C. Vine length, vine diameter, fresh weight and dry weight were enhanced without callusing of explant in the MS medium supplemented with 0.2-0.5 mg•L -1 BA. The growth of single-node and shoot-tip explants were significantly enhanced with the increase of vine length, number of leaf, number of root, fresh weight, and dry weight in the solid medium containing 5% sucrose and 0.2 mg•L -1 BA. Vine elongation of shoot-tip explants were highest in the liquid medium containing 3% sucrose than the solid medium. The survival rate of minimal-growth in vitro conservation was 100% in 5 months under the presence of light (LED, 150±5 μmol•m -2 •s -1 PPFD) at 15°C, but the explants in dark condition died in 3 months. The light was absolutely necessary for the in vitro conservation under minimal-growth conditions of virus-free sweet potato plantlets at 15°C, and the high density of explants (10 plantlets per Petri Dish) was increased the efficiency of mass conservation.

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Effects of Light-emitting Diodes on In Vitro Growth of Virus-free Sweet Potato Plantlets

Cited by 5 publications

References 28 publications

Vegetative Propagation of Six Pachyphytum Species as Influenced by Different LED Light Qualities

Vegetative Propagation of Six Pachyphytum Species as Influenced by Different LED Light Qualities

Effects of Acclimatization to Different Light Colors on the Growth of Petunia (Petunia hybrida) in a Greenhouse

Effect of Growth Regulator, Sucrose, and Minimal-growth Conservation on In Vitro Propagation of Virus-free Sweet Potato Plantlets

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