Abstract
Summary. When irradiated ~or a period of 48 hours with light of restricted wave-lengths in the red and far-red regions, maximum anthoeyanin content in hypocotyls was found at 730 nm; in cotyledons the yield at 716 was almost equal to that at 730 nm. In hypocotyls the effectiveness of 703, 716 and 760 nm light was much increased if plants were transferred to red light after 6 hours. The intermediate wave-length band centred at 703 nm was ineffective when given alone but led to a high yield if followed by red light. When given before far-red light (standard far-red field), 6 hours at 703 nm reduced anthocyanin yield in the same way as red light; when given after 6 hours of far-red, however, 703 nm light did not act like red light to sustain a high rate of anthocyanin synthesis. It is concluded that two reactions are involved in the photocontrol of anthocyanin formation in turnip seedlings.
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Claims 8
Claim · model-written summary
Anthocyanin content in turnip hypocotyls was maximal under 730 nm light.
- Taxon
- Turnip
.jpg?width=60)
Brassica rapa subsp. rapat0 - Organ / stage
- hypocotylse1
- Treatment
- light of restricted wave-lengthse0
- Outcome
- anthoeyanin contente1
- Direction
- maximume1
- Qualifier
- found at 730 nme1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Photocontrol of Anthocyanin Formation in Turnip Seedlings”
e0“When irradiated ~or a period of 48 hours with light of restricted wave-lengths in the red and far-red regions”
e1“maximum anthoeyanin content in hypocotyls was found at 730 nm”
Claim · model-written summary
Anthocyanin yield in turnip cotyledons under 716 nm light was almost equal to that under 730 nm light.
- Taxon
- TurnipBrassica rapa subsp. rapat0
- Organ / stage
- cotyledonse2
- Treatment
- light of restricted wave-lengthse0
- Outcome
- yielde2
- Direction
- almost equale2
- Comparator
- 730 nme2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Photocontrol of Anthocyanin Formation in Turnip Seedlings”
e0“When irradiated ~or a period of 48 hours with light of restricted wave-lengths in the red and far-red regions”
e2“in cotyledons the yield at 716 was almost equal to that at 730 nm”
Claim · model-written summary
In turnip hypocotyls, transfer to red light after 6 hours much increased the effectiveness of 703, 716 and 760 nm light.
- Taxon
- TurnipBrassica rapa subsp. rapat0
- Organ / stage
- hypocotylse3
- Treatment
- transferred to red light after 6 hourse3
- Outcome
- effectiveness of 703, 716 and 760 nm lighte3
- Direction
- much increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Photocontrol of Anthocyanin Formation in Turnip Seedlings”
e3“In hypocotyls the effectiveness of 703, 716 and 760 nm light was much increased if plants were transferred to red light after 6 hours”
Claim · model-written summary
Light at 703 nm given alone was ineffective for turnip anthocyanin formation.
- Taxon
- TurnipBrassica rapa subsp. rapat0
- Treatment
- intermediate wave-length band centred at 703 nme4
- Outcome
- ineffectivee4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Photocontrol of Anthocyanin Formation in Turnip Seedlings”
e4“The intermediate wave-length band centred at 703 nm was ineffective when given alone but led to a high yield if followed by red light”
Claim · model-written summary
Light at 703 nm followed by red light led to a higher anthocyanin yield in turnip.
- Taxon
- TurnipBrassica rapa subsp. rapat0
- Treatment
- followed by red lighte4
- Outcome
- yielde4
- Direction
- increaseinferrede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Photocontrol of Anthocyanin Formation in Turnip Seedlings”
e4“The intermediate wave-length band centred at 703 nm was ineffective when given alone but led to a high yield if followed by red light”
Claim · model-written summary
6 hours of 703 nm light before far-red light reduced anthocyanin yield in turnip as red light did.
- Taxon
- TurnipBrassica rapa subsp. rapat0
- Treatment
- 6 hours at 703 nme5
- Outcome
- anthocyanin yielde5
- Direction
- reducede5
- Comparator
- red lighte5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Photocontrol of Anthocyanin Formation in Turnip Seedlings”
e5“When given before far-red light (standard far-red field), 6 hours at 703 nm reduced anthocyanin yield in the same way as red light”
Claim · model-written summary
When given after 6 hours of far-red light, 703 nm light did not sustain the anthocyanin synthesis rate that red light sustained in turnip.
- Taxon
- TurnipBrassica rapa subsp. rapat0
- Treatment
- given after 6 hours of far-red, however, 703 nm lighte6
- Outcome
- rate of anthocyanin synthesise6
- Direction
- lowerinferrede6
- Comparator
- red lighte6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Photocontrol of Anthocyanin Formation in Turnip Seedlings”
e6“when given after 6 hours of far-red, however, 703 nm light did not act like red light to sustain a high rate of anthocyanin synthesis”
Claim · model-written summary
Two reactions are involved in the photocontrol of anthocyanin formation in turnip seedlings.
- Taxon
- TurnipBrassica rapa subsp. rapat0
- Outcome
- photocontrol of anthocyanin formatione7
- Qualifier
- two reactions are involvede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Photocontrol of Anthocyanin Formation in Turnip Seedlings”
e7“It is concluded that two reactions are involved in the photocontrol of anthocyanin formation in turnip seedlings”
The same questions in other papers
light · yield · Brassica rapa (field mustard)Positive and negative results
1 paper in the same direction as this paper · 9 reporting no difference from an alternative
- positive
- positive
- positive
7 papers more in this group
See all 11 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.