Abstract
Sections from both dark- and light-grown seedlings of 11 species were used to test responses to IAA (indoleacetic acid), sucrose, and an inhibitor prepared from cabbage seedlings. Variability among species was great; however, results indicate that many species, light-grown as well as dark-grown, could prove useful in bioassays and probably should be investigated. Although elongation of segments from high-intensity-light-grown cabbage and cucumber hypocotyls and oat coleoptiles had essentially stopped by the time of cutting, their growth and response to IAA as sections were considerable. Neither oat coleoptile nor pea internode sections can be considered representative because of differences in responses to sucrose, of dark-grown sections to light, and to an inhibitor prepared from cabbage. Sucrose generally did not stimulate and even inhibited response of most hypocotyls to IAA. Sucrose was absorbed by sections, increasing final dry weight while not affecting elongation. Sucrose reduced the rate of respiratory decay in cabbage and sunflower, but IAA did not affect respiration. Changes in length and fresh weight of cucumber hypocotyl sections were comparable.
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Claims 14
Claim · model-written summary
Plant section responses varied greatly among species.
Verbatim
e0“Variability among species was great”
Claim · model-written summary
Many light-grown and dark-grown plant species could be useful in bioassays.
Verbatim
e0“results indicate that many species, light-grown as well as dark-grown, could prove useful in bioassays”
Claim · model-written summary
High-intensity-light-grown cabbage hypocotyl sections showed considerable growth and IAA response after cutting despite prior elongation stopping.
- Taxon
- cabbage
Brassica oleracea var. capitatae0 - Organ / stage
- hypocotylse0
- Treatment
- IAAe0
- Outcome
- growth and response to IAA as sectionse0
- Qualifier
- high-intensity-light-growne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although elongation of segments from high-intensity-light-grown cabbage and cucumber hypocotyls and oat coleoptiles had essentially stopped by the time of cutting, their growth and response to IAA as sections were considerable.”
Claim · model-written summary
High-intensity-light-grown cucumber hypocotyl sections showed considerable growth and IAA response after cutting.
- Taxon
- cucumber
Cucumis sativuse0 - Organ / stage
- hypocotylse0
- Treatment
- IAAe0
- Outcome
- growth and response to IAA as sectionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high-intensity-light-grown cabbage and cucumber hypocotyls and oat coleoptiles had essentially stopped by the time of cutting, their growth and response to IAA as sections were considerable”
Claim · model-written summary
High-intensity-light-grown oat coleoptile sections showed considerable growth and IAA response after cutting.
- Taxon
- oat
Avena sativae0 - Organ / stage
- coleoptilese0
- Treatment
- IAAe0
- Outcome
- growth and response to IAA as sectionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high-intensity-light-grown cabbage and cucumber hypocotyls and oat coleoptiles had essentially stopped by the time of cutting, their growth and response to IAA as sections were considerable”
Claim · model-written summary
Oat coleoptile sections were not representative in their responses to sucrose, light and cabbage inhibitor.
- Taxon
- oatAvena sativae0
- Organ / stage
- coleoptilee0
- Outcome
- considered representativee0
- Comparator
- pea internode sectionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither oat coleoptile nor pea internode sections can be considered representative because of differences in responses to sucrose, of dark-grown sections to light, and to an inhibitor prepared from cabbage.”
Claim · model-written summary
Pea internode sections were not representative in their responses to sucrose, light and cabbage inhibitor.
- Taxon
- pea
Lathyrus oleraceuse0 - Organ / stage
- internode sectionse0
- Outcome
- considered representativee0
- Comparator
- oat coleoptilee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither oat coleoptile nor pea internode sections can be considered representative because of differences in responses to sucrose, of dark-grown sections to light, and to an inhibitor prepared from cabbage.”
Claim · model-written summary
Sucrose generally failed to stimulate and sometimes inhibited hypocotyl response to IAA.
Not reportedComparator
Verbatim
e0“Sucrose generally did not stimulate and even inhibited response of most hypocotyls to IAA.”
t0“Different Species, Sucrose, and Light in Plant Section Elongation Tests”
Claim · model-written summary
Sucrose absorption increased final dry weight of plant sections.
Not reportedComparator
Verbatim
e0“Sucrose was absorbed by sections, increasing final dry weight while not affecting elongation.”
t0“Different Species, Sucrose, and Light in Plant Section Elongation Tests”
Claim · model-written summary
Sucrose absorption did not affect section elongation.
Not reportedComparator
Verbatim
e0“Sucrose was absorbed by sections, increasing final dry weight while not affecting elongation.”
t0“Different Species, Sucrose, and Light in Plant Section Elongation Tests”
Claim · model-written summary
Sucrose reduced the rate of respiratory decay in cabbage.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- Sucrosee0
- Outcome
- rate of respiratory decaye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sucrose reduced the rate of respiratory decay in cabbage and sunflower”
Claim · model-written summary
Sucrose reduced the rate of respiratory decay in sunflower.
- Taxon
- sunflower
Helianthus annuuse0 - Treatment
- Sucrosee0
- Outcome
- rate of respiratory decaye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sucrose reduced the rate of respiratory decay in cabbage and sunflower”
Claim · model-written summary
IAA did not affect respiration.
Not reportedComparator
Verbatim
e0“IAA did not affect respiration.”
t0“Different Species, Sucrose, and Light in Plant Section Elongation Tests”
Claim · model-written summary
Length and fresh-weight changes in cucumber hypocotyl sections were comparable.
- Taxon
- cucumberCucumis sativuse0
- Organ / stage
- hypocotyl sectionse0
- Outcome
- Changes in length and fresh weighte0
- Direction
- comparablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Changes in length and fresh weight of cucumber hypocotyl sections were comparable.”
The same questions in other papers
sucrose · disease · Helianthus annuus (common sunflower)Positive and negative results
1 reporting no difference from an alternative
- no effect
sucrose · disease · Brassica oleracea (wild cabbage)Results agree
3 papers in the same direction as this paper
- positive
- 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.