Abstract
The flower inhibitory effect of low intensity light preceding the dark period of adequate length (16 hours) was investigated in Pharbitis seedlings.1) Eight hour incandescent light of 10lux inhibits flower formation.2) The incandescent light of 10-25lux given for 8 hours suppresses the inductive effect of the following dark period entirely, and even that of 1000lux is not strong enough to bring about maximum photoperiodic response.3) Spectral sensitivity of the low intensity light for flower inhibition was studied. Far-red light has the highest inhibitory effect and red light the lowest.4) Daylight fluorescent light of 10lux which comprises little far-red light inhibits flowering far less than the incandescent light of the same intensity.5) The daylight fluorescent light of 10lux mixed with the far-red light of 120 erg/cm2./sec. inhibits flowering remarkably when given for 8 hours.6) Flower inhibitory effect of the incandescent light of 10lux is reversed by red light applied just before the dark period. But the red light mixed with the far-red light has little reversing effect for the flower inhibitory effect of the incandescent light.Flower inhibitory effect of the incandescent light is attributable to the action of the far-red light comprised in it. “Red-far-red absorbing pigment system” is supposed to play an important role in the reaction preceding inductive dark period.
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Claims 11
Claim · model-written summary
Eight hours of 10lux incandescent light inhibits flower formation.
- Taxon
- Pharbitis Nil
Ipomoea nilt0 - Treatment
- Eight hour incandescent light of 10luxe0
- Outcome
- flower formatione0
- Direction
- inhibitse0
- Value
- 10luxe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eight hour incandescent light of 10lux inhibits flower formation”
t0“Pharbitis Nil”
Claim · model-written summary
Eight hours of 10-25lux incandescent light entirely suppresses induction by the following dark period.
- Taxon
- Pharbitis NilIpomoea nilt0
- Treatment
- incandescent light of 10-25luxe0
- Outcome
- inductive effect of the following dark periode0
- Direction
- suppressese0
- Qualifier
- given for 8 hourse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The incandescent light of 10-25lux given for 8 hours suppresses the inductive effect of the following dark period entirely”
t0“Pharbitis Nil”
Claim · model-written summary
Even 1000lux incandescent light does not produce the maximum photoperiodic response.
- Taxon
- Pharbitis NilIpomoea nilt0
- Treatment
- 1000luxe0
- Outcome
- photoperiodic responsee0
- Direction
- not strong enoughe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“even that of 1000lux is not strong enough to bring about maximum photoperiodic response”
t0“Pharbitis Nil”
Claim · model-written summary
Far-red light had the highest inhibitory effect on flowering.
- Taxon
- Pharbitis NilIpomoea nilt0
- Treatment
- Far-red lighte0
- Outcome
- inhibitory effecte0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Far-red light has the highest inhibitory effect”
t0“Pharbitis Nil”
Claim · model-written summary
Red light had the lowest inhibitory effect on flowering.
- Taxon
- Pharbitis NilIpomoea nilt0
- Treatment
- red lighte0
- Outcome
- red light the loweste0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“red light the lowest”
t0“Pharbitis Nil”
Claim · model-written summary
At 10lux, daylight fluorescent light inhibited flowering far less than incandescent light.
- Taxon
- Pharbitis NilIpomoea nilt0
- Treatment
- Daylight fluorescent light of 10luxe0
- Outcome
- floweringe0
- Direction
- far lesse0
- Comparator
- incandescent light of the same intensitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Daylight fluorescent light of 10lux which comprises little far-red light inhibits flowering far less than the incandescent light of the same intensity”
t0“Pharbitis Nil”
Claim · model-written summary
Daylight fluorescent light mixed with far-red light markedly inhibited flowering when given for eight hours.
- Taxon
- Pharbitis NilIpomoea nilt0
- Treatment
- daylight fluorescent light of 10lux mixed with the far-red light of 120 erg/cm2./sec.e0
- Outcome
- floweringe0
- Direction
- inhibitse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The daylight fluorescent light of 10lux mixed with the far-red light of 120 erg/cm2./sec. inhibits flowering remarkably when given for 8 hours”
t0“Pharbitis Nil”
Claim · model-written summary
Red light just before darkness reversed inhibition by 10lux incandescent light.
- Taxon
- Pharbitis NilIpomoea nilt0
- Treatment
- red light applied just before the dark periode0
- Outcome
- Flower inhibitory effecte0
- Direction
- reversede0
- Comparator
- incandescent light of 10luxe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flower inhibitory effect of the incandescent light of 10lux is reversed by red light applied just before the dark period”
t0“Pharbitis Nil”
Claim · model-written summary
Red light mixed with far-red light had little reversing effect on incandescent light inhibition.
- Taxon
- Pharbitis NilIpomoea nilt0
- Treatment
- red light mixed with the far-red lighte0
- Outcome
- flower inhibitory effecte0
- Direction
- little reversing effecte0
- Comparator
- incandescent lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the red light mixed with the far-red light has little reversing effect for the flower inhibitory effect of the incandescent light”
t0“Pharbitis Nil”
Claim · model-written summary
The authors attributed incandescent light inhibition to its far-red component.
- Taxon
- Pharbitis NilIpomoea nilt0
- Outcome
- Flower inhibitory effecte0
- Qualifier
- action of the far-red light comprised in ite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flower inhibitory effect of the incandescent light is attributable to the action of the far-red light comprised in it”
t0“Pharbitis Nil”
Claim · model-written summary
The authors proposed a role for the red-far-red absorbing pigment system before the inductive dark period.
- Taxon
- Pharbitis NilIpomoea nilt0
- Outcome
- reaction preceding inductive dark periode0
- Qualifier
- “Red-far-red absorbing pigment system”e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0““Red-far-red absorbing pigment system” is supposed to play an important role in the reaction preceding inductive dark period”
t0“Pharbitis Nil”
The same questions in other papers
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