Abstract
The article presents the results of studying the effect of light-emitting diodes (LEDs) on the efficiency of micropropagation of valuable woody plants. Commercial use of micropropagation requires optimization of various parameters, including light quality and lighting regime. Nowadays, LED have become an alternative source of illumination for plant tissue culture, including woody plants. Recently, along with medicinal herbaceous plants, tree crops have also become widely used as a source of various pharmaceuticals. Therefore, it is promising to optimize the technology of micropropagation for the rapid and massive production of valuable woody plants. The current research focused on analysing the effects of different LEDs on Paulownia sp. micropropagation: white (W), red (R), blue (B), mixed red and blue (R:B), and the Fitotron climate chamber. The fluorescent light was used as a control. Micropropagation efficiency was evaluated using the following parameters: height, number of axillary buds, length of internodes, number and length of roots, and photosynthetic pigment content. P. tomentosa produced the greatest number of roots under R LEDs, while hybrid Paulownia Sieb.Zucc. × Elongata - under W and R LEDs. In hybrid Paulownia Sieb.Zucc. × Elongata, the most intense leaf and internode formation was observed under R:B and R LEDs. The content of chlorophyll a and b in P. tomentosa leaves was significantly higher under R LED, while in HP leaves - under B LED. The obtained results are an important contribution to the commercial use of Paulownia and other valuable woody plants for mass production of plant material with biologically active properties.
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Claims 5
Claim · model-written summary
Red LEDs produced the greatest number of roots in P. tomentosa.
- Taxon
- P. tomentosa
Paulownia tomentosae0 - Treatment
- R LEDse0
- Outcome
- number of rootse0
- Direction
- greateste0
- Comparator
- fluorescent lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P. tomentosa produced the greatest number of roots under R LEDs, while hybrid Paulownia Sieb.Zucc. × Elongata - under W and R LEDs.”
e1“The fluorescent light was used as a control.”
Claim · model-written summary
White and red LEDs produced the greatest number of roots in hybrid Paulownia.
Verbatim
e0“P. tomentosa produced the greatest number of roots under R LEDs, while hybrid Paulownia Sieb.Zucc. × Elongata - under W and R LEDs.”
e1“The fluorescent light was used as a control.”
Claim · model-written summary
Red and mixed red-blue LEDs gave the most intense leaf and internode formation in hybrid Paulownia.
Verbatim
e0“In hybrid Paulownia Sieb.Zucc. × Elongata, the most intense leaf and internode formation was observed under R:B and R LEDs.”
e1“The fluorescent light was used as a control.”
Claim · model-written summary
Chlorophyll a and b content in P. tomentosa leaves was significantly higher under red LEDs.
- Taxon
- P. tomentosaPaulownia tomentosae0
- Organ / stage
- leavese0
- Treatment
- R LEDe0
- Outcome
- content of chlorophyll a and be0
- Direction
- highere0
- Comparator
- fluorescent lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of chlorophyll a and b in P. tomentosa leaves was significantly higher under R LED, while in HP leaves - under B LED.”
e1“The fluorescent light was used as a control.”
Claim · model-written summary
Chlorophyll a and b content in hybrid Paulownia leaves was significantly higher under blue LEDs.
Verbatim
e0“The content of chlorophyll a and b in P. tomentosa leaves was significantly higher under R LED, while in HP leaves - under B LED.”
e1“The fluorescent light was used as a control.”
The same questions in other papers
light · growth · Paulownia tomentosaResults agree
2 papers in the same direction as this paper
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.