Abstract
The effects of NAA, BA, or Accel on CO 2 assimilation of shoot leaves of mature bearing Redchief `Delicious' and `Empire' apple ( Malus ×domestica Borkh.) trees were evaluated over two seasons. BA at 50 mg·L -1 did not significantly affect any of the gas-exchange parameters measured. NAA (15 mg·L -1 ) consistently suppressed CO 2 assimilation rate (from ≈10% to 24% below that of the control). This suppression was NAA-concentration dependent, continued for >15 days after treatment, and was completely overcome in `Empire', but only partially or not at all in `Delicious' when BA was combined with NAA. These results are discussed in relation to fruit thinning and NAA-induced inhibition of fruit growth in spur-type `Delicious'. Chemical names used: 2-(1-napthyl) acetic acid (NAA); N -(phenyl)-1 H -purine-6-amine (BA); BA + gibberellin A (GA) 4+7 (Accel).
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Claims 6
Claim · model-written summary
BA at 50 mg·L -1 did not significantly affect measured gas exchange parameters.
- Taxon
- apple
Malus domesticae1 - Treatment
- BA at 50 mg·L -1e0
- Outcome
- gas-exchange parameterse0
- Direction
- did not significantly affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BA at 50 mg·L -1 did not significantly affect any of the gas-exchange parameters measured”
e1“apple ( Malus ×domestica Borkh.) trees”
Claim · model-written summary
NAA at 15 mg·L -1 suppressed apple leaf CO2 assimilation by approximately 10% to 24% relative to control.
- Taxon
- appleMalus domesticae1
- Treatment
- NAA (15 mg·L -1 )e0
- Outcome
- CO 2 assimilation ratee0
- Direction
- suppressede0
- Value
- ≈10% to 24%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NAA (15 mg·L -1 ) consistently suppressed CO 2 assimilation rate (from ≈10% to 24% below that of the control)”
e1“apple ( Malus ×domestica Borkh.) trees”
Claim · model-written summary
NAA suppression of assimilation depended on NAA concentration.
- Taxon
- appleMalus domesticae1
- Treatment
- NAAe0
- Outcome
- suppressione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This suppression was NAA-concentration dependent”
e1“apple ( Malus ×domestica Borkh.) trees”
Claim · model-written summary
NAA suppression of assimilation continued for more than 15 days after treatment.
- Taxon
- appleMalus domesticae2
- Treatment
- NAA (15 mg·L -1 )e1
- Outcome
- CO 2 assimilation ratee1
- Direction
- suppressede1
- Value
- >15 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“continued for >15 days after treatment”
e1“NAA (15 mg·L -1 ) consistently suppressed CO 2 assimilation rate”
e2“apple ( Malus ×domestica Borkh.) trees”
Claim · model-written summary
BA fully overcame NAA suppression in Empire apple.
- Taxon
- appleMalus domesticae1
- Material
- `Empire'e0
- Treatment
- BA was combined with NAAe0
- Outcome
- suppressione2
- Direction
- completely overcomee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“completely overcome in `Empire', but only partially or not at all in `Delicious' when BA was combined with NAA”
e1“apple ( Malus ×domestica Borkh.) trees”
e2“This suppression was NAA-concentration dependent”
Claim · model-written summary
BA only partly or did not overcome NAA suppression in Delicious apple.
- Taxon
- appleMalus domesticae1
- Material
- `Delicious'e0
- Treatment
- BA was combined with NAAe0
- Outcome
- suppressione2
- Direction
- only partially or not at alle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only partially or not at all in `Delicious' when BA was combined with NAA”
e1“apple ( Malus ×domestica Borkh.) trees”
e2“This suppression was NAA-concentration dependent”
The same questions in other papers
N-benzyladenine · control · Malus domestica (apple)Results agree
1 paper in the same direction as this paper
- positive
1-naphthaleneacetic acid · physiology: photosynthesis · Malus domestica (apple)Results agree
2 papers in the same direction as this paper
- negative
- negative
1-naphthaleneacetic acid · control · Malus domestica (apple)Results agree
2 papers in the same direction as this paper
- 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.