Abstract
The relationship between photoperiodically changed growth of leaves, cotyledons, hypocotyl, roots and flowering has been investigated inChenopodium rubrum. It was found that all the growth characteristics recorded in leaves and cotyledons,i.e. length, area, dry weight and chlorophyll content, were inhibited during three inductive photoperiods (16 h darkness, 8 h light-SD) as compared with control plants grown under continuous illumination. Similarly, the cessation of root elongation and a decrease in root dry weight were observed. On the contrary, the elongation and dry weight of hypocotyl are stimulated by SD. The degree of the effect exerted by SD on the growth of different organs depends both on actual growth stage and the number of SD photoperiods. Increased relative rate of growth of roots and cotyledons was recorded in plants transferred after SD treatment to continuous illumination. However, this rise possesses only transitional character and the relative growth rate of treated plants equals that of control ones afterwards. The above growth changes are discussed as a possible modifying factor of floral differentiation.
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Claims 6
Claim · model-written summary
Short days inhibited leaf and cotyledon length, area, dry weight and chlorophyll content.
- Taxon
- Chenopodium rubrum
Oxybasis rubrat0 - Organ / stage
- leaves and cotyledonse0
- Treatment
- three inductive photoperiods (16 h darkness, 8 h light-SD)e0
- Outcome
- length, area, dry weight and chlorophyll contente0
- Direction
- inhibitede0
- Comparator
- control plants grown under continuous illuminatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all the growth characteristics recorded in leaves and cotyledons,i.e. length, area, dry weight and chlorophyll content, were inhibited during three inductive photoperiods (16 h darkness, 8 h light-SD) as compared with control plants grown under continuous illumination.”
t0“Chenopodium rubrum”
Claim · model-written summary
Short days stopped root elongation and decreased root dry weight.
- Taxon
- Chenopodium rubrumOxybasis rubrat0
- Organ / stage
- roote0
- Treatment
- SDe1
- Outcome
- root elongation and a decrease in root dry weighte0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cessation of root elongation and a decrease in root dry weight were observed.”
e1“On the contrary, the elongation and dry weight of hypocotyl are stimulated by SD.”
t0“Chenopodium rubrum”
Claim · model-written summary
Short days stimulated hypocotyl elongation and dry weight.
- Taxon
- Chenopodium rubrumOxybasis rubrat0
- Treatment
- SDe0
- Outcome
- elongation and dry weight of hypocotyle0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the elongation and dry weight of hypocotyl are stimulated by SD.”
t0“Chenopodium rubrum”
Claim · model-written summary
The short-day growth effect depended on growth stage and number of short-day photoperiods.
- Taxon
- Chenopodium rubrumOxybasis rubrat0
- Treatment
- SDe0
- Outcome
- degree of the effecte0
- Qualifier
- actual growth stage and the number of SD photoperiodse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The degree of the effect exerted by SD on the growth of different organs depends both on actual growth stage and the number of SD photoperiods.”
t0“Chenopodium rubrum”
Claim · model-written summary
After short-day treatment, transfer to continuous light temporarily increased relative growth rate of roots and cotyledons.
- Taxon
- Chenopodium rubrumOxybasis rubrat0
- Treatment
- transferred after SD treatment to continuous illuminatione0
- Outcome
- relative rate of growth of roots and cotyledonse0
- Direction
- Increasede0
- Qualifier
- only transitional charactere1
- Comparator
- control onese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased relative rate of growth of roots and cotyledons was recorded in plants transferred after SD treatment to continuous illumination.”
e1“this rise possesses only transitional character and the relative growth rate of treated plants equals that of control ones afterwards.”
t0“Chenopodium rubrum”
Claim · model-written summary
After the temporary increase, treated plants had the same relative growth rate as controls.
- Taxon
- Chenopodium rubrumOxybasis rubrat0
- Treatment
- treated plantse0
- Outcome
- relative growth ratee0
- Direction
- equalse0
- Comparator
- control onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the relative growth rate of treated plants equals that of control ones afterwards.”
t0“Chenopodium rubrum”
The same questions in other papers
light · growth · Oxybasis rubra (red goosefoot)Positive and negative results
1 in the opposite direction
- negative
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.