<i>In vitro</i>growth of<i>Cymbidium</i>plantlets cultured under superbright red and blue light-emitting diodes (LEDs)

Tanaka, Michio; Takamura, Tsutomu; Watanabe, Hirokazu; Endo, Motonobu; Yanagi, Tetsuo; Okamoto, K.

doi:10.1080/14620316.1998.11510941

Cited by 155 publications

(90 citation statements)

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“…The inhibiting influence of the blue light on root formation for in vitro grown plants has previously been reported by Tanaka et al for Cymbidium [6] and Fuernkranz for Prunus serotina [19]. We observed that the percentage of explants with roots (rooting rate) and the number of roots per rooted plantlet also depends on the fractional PFD of the far-red component.…”

Section: Discussionsupporting

confidence: 82%

In vitro culture of Chrysanthemum plantlets using light-emitting diodes

Kurilčik¹,

Miklušytė-Čanova

Dapkūnienė

et al. 2008

Open Life Sciences

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Effects of illumination spectrum on the morphogenesis of chrysanthemum plantlets (Chrysanthemum morifolium Ramat. 'Ellen') grown in vitro were studied using an illumination system consisting of four groups of light-emitting diodes (LEDs) in the following spectral regions: blue (450nm), red (640nm), red (660nm), and far-red (735nm). Taking into account all differences in shoot height, root length, and fresh and dry weight (FW and DW, respectively), observed while changing the total photon flux density (PFD), the optimal total PFD for growth of chrysanthemum plantlets in vitro was estimated. For 16 h photoperiod and typical fractions of the spectral components (14%, 50%, 28%, and 8%, respectively), the optimal total PFD was found to be 40 µmol m -2 s -1. Our study shows that the blue component in the illumination spectrum inhibits the plantlet extension and formation of roots and simultaneously increases the DW to FW ratio and content of photosynthetic pigments. We demonstrate photomorphogenetic effects in the blue region and its interaction with the fractional PFD of the far-red spectral component. Under constant fractional PFD of the blue component, the root number, length of roots and stems, and fresh weight of the plantlets have a correlated nonmonotonous dependence on the fractional PFD of the far-red component.

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Section: Discussionsupporting

confidence: 82%

In vitro culture of Chrysanthemum plantlets using light-emitting diodes

Kurilčik¹,

Miklušytė-Čanova

Dapkūnienė

et al. 2008

Open Life Sciences

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“…They have been used recently in several plant cultures because of their wavelength specificity and narrow bandwidth. 8) This report describes the growth and carotenoid production of Thraustochytrium sp. CHN-1 cultured under superbright red and blue LEDs.…”

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confidence: 99%

Growth and Carotenoid Production ofThraustochytriumsp. CHN-1 Cultured under Superbright Red and Blue Light-emitting Diodes

Yamaoka

Carmona

Oota

2004

Bioscience, Biotechnology, and Biochemistry

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“…Growth of African marigold stimulated by the supplementary red radiation is most probably related to vigorous photosynthesis rather than under blue light as shown in grape plantlets in vitro (Heo et al, 2006). Plant growth such as a dry weight is resulted from red or blue plus red light quality compared to blue in several in vitro or ex vitro plants according to the report of Tanaka et al (1998), Heo et al (2002), and Kim et al (2004). Contrarily, it is suggested that red plus far-red light with different mixture ratios did not influenced on shoot and root growth of potted Chrysanthemum under growth chamber conditions (Lund et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

“…Special bands of short waves in spectral energy can be influenced on growth and development in vitro and/or ex vitro plant species (Tanaka et al, 1998;Barreiro et al, 1992;Jayakumar et al, 2004;Amudha et al, 2005;Heo et al, 2006;Heo et al, 2010a;2010b). It was reported that red light in short waves is important for the development of photosynthetic apparatus in plants (Saebo et al, 1995).…”

Section: Introductionmentioning

confidence: 99%