Abstract
The relationship between red/far-red ratio (R/FR ratio) of LED chips and flowering inhibition, by LED light sources with the same power consumption, was evaluated using two cultivars of chrysanthemum, the autumn flowering ‘Jimba’ and summer-to-autumn flowering ‘Iwano-hakusen’. The combinations of light intensity of the R and FR LED chips emitting at wavelengths of 632 nm and 734 nm, respectively, were set as 5 : 0, 4 : 1, 3 : 2, 2 : 3, 1 : 4, and 0 : 5. The six LED light bulbs were divided into short- and long-term lighting to detect differences in the effects of flowering inhibition due to differences in light quality. The long- and short-term lighting treatments were set at 4 h and 30 min, respectively, for ‘Iwano-hakusen’ and 2 h and 4 min, respectively, for ‘Jimba’. In the short-term lighting treatment, a high flowering inhibitory effect was obtained with the R5:FR0 chip combination in both cultivars. In long-term lighting treatment, the responses to light quality differed between the cultivars: flowering inhibition in ‘Iwano-hakusen’ was highly effective at R3:FR2 and R2:FR3; however, in ‘Jimba’ a marked inhibitory effect was obtained at R5:FR0. Long-term lighting by R + FR light resulted in a high flowering inhibitory effect in ‘Iwano-hakusen’. This suggested the involvement of high irradiation response via the phytochrome phyA.
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Claims 6
Claim · model-written summary
Short-term R5:FR0 lighting strongly inhibited flowering in both cultivars.
- Taxon
- Chrysanthemum
.jpeg?width=60)
Chrysanthemumt0 - Treatment
- R5:FR0 chip combinatione0
- Outcome
- flowering inhibitory effecte0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpeg?width=500)
Verbatim
e0“In the short-term lighting treatment, a high flowering inhibitory effect was obtained with the R5:FR0 chip combination in both cultivars”
t0“Chrysanthemum”
Claim · model-written summary
Long-term R3:FR2 lighting strongly inhibited flowering in Iwano-hakusen.
- Taxon
- ChrysanthemumChrysanthemumt0
- Material
- Iwano-hakusene0
- Treatment
- R3:FR2e0
- Outcome
- flowering inhibitione0
- Direction
- highly effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flowering inhibition in ‘Iwano-hakusen’ was highly effective at R3:FR2 and R2:FR3”
t0“Chrysanthemum”
Claim · model-written summary
Long-term R2:FR3 lighting strongly inhibited flowering in Iwano-hakusen.
- Taxon
- ChrysanthemumChrysanthemumt0
- Material
- Iwano-hakusene0
- Treatment
- R2:FR3e0
- Outcome
- flowering inhibitione0
- Direction
- highly effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flowering inhibition in ‘Iwano-hakusen’ was highly effective at R3:FR2 and R2:FR3”
t0“Chrysanthemum”
Claim · model-written summary
Long-term R5:FR0 lighting markedly inhibited flowering in Jimba.
- Taxon
- ChrysanthemumChrysanthemumt0
- Material
- Jimbae0
- Treatment
- R5:FR0e0
- Outcome
- inhibitory effecte0
- Direction
- markede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in ‘Jimba’ a marked inhibitory effect was obtained at R5:FR0”
t0“Chrysanthemum”
Claim · model-written summary
Long-term combined R and FR light strongly inhibited flowering in Iwano-hakusen.
- Taxon
- ChrysanthemumChrysanthemumt0
- Material
- Iwano-hakusene0
- Treatment
- R + FR lighte0
- Outcome
- flowering inhibitory effecte0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term lighting by R + FR light resulted in a high flowering inhibitory effect in ‘Iwano-hakusen’”
t0“Chrysanthemum”
Claim · model-written summary
The authors suggest that phyA high irradiation response is involved in this flowering inhibition.
- Taxon
- ChrysanthemumChrysanthemumt0
- Gene
- phytochrome phyAe0
- Outcome
- high irradiation responsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This suggested the involvement of high irradiation response via the phytochrome phyA”
t0“Chrysanthemum”
The same questions in other papers
light · phenology · ChrysanthemumResults differ
21 papers in the same direction as this paper · 6 in the opposite direction
- negative
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See all 28 papers →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.