Abstract
Abstract The roles of free and bound abscisic acid (ABA) in the breaking of dormancy in seeds of peach ( Prunus persica (L.) Batsch) were investigated. Concentrations were consistently 10- to 100-fold higher in the embryonic axes of seeds than in the seed coats or cotyledons. Free and bound ABA declined 75 to 95% during stratification at both 5° and 20°C, yet only the 5° treatment broke dormancy. Extracts of chilled seeds were less inhibitory to germination of non-dormant seeds than were extracts of non-chilled seeds, but ABA content of the extracts was sufficient to account for only a small part of their biological activity.
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Claims 5
Claim · model-written summary
ABA concentrations in embryonic axes were 10- to 100-fold higher than in seed coats or cotyledons.
- Taxon
- peach
Prunus persicat0 - Organ / stage
- embryonic axes of seedse0
- Outcome
- Concentrationse0
- Direction
- highere0
- Value
- 10- to 100-folde0
- Comparator
- seed coats or cotyledonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations were consistently 10- to 100-fold higher in the embryonic axes of seeds than in the seed coats or cotyledons.”
t0“Seeds of Peach”
Claim · model-written summary
Free and bound ABA declined 75 to 95% at both stratification temperatures.
- Taxon
- peachPrunus persicat0
- Treatment
- stratification at both 5° and 20°Ce0
- Outcome
- Free and bound ABAe0
- Direction
- declinede0
- Value
- 75 to 95%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Free and bound ABA declined 75 to 95% during stratification at both 5° and 20°C”
t0“Seeds of Peach”
Claim · model-written summary
Only 5° stratification broke seed dormancy.
- Taxon
- peachPrunus persicat0
- Treatment
- 5° treatmente0
- Outcome
- broke dormancye0
- Comparator
- 20°Ce0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Free and bound ABA declined 75 to 95% during stratification at both 5° and 20°C, yet only the 5° treatment broke dormancy.”
t0“Seeds of Peach”
Claim · model-written summary
Chilled seed extracts inhibited germination less than non-chilled extracts.
- Taxon
- peachPrunus persicat0
- Treatment
- Extracts of chilled seedse0
- Outcome
- germination of non-dormant seedse0
- Direction
- less inhibitorye0
- Comparator
- extracts of non-chilled seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Extracts of chilled seeds were less inhibitory to germination of non-dormant seeds than were extracts of non-chilled seeds”
t0“Seeds of Peach”
Claim · model-written summary
ABA accounted for only a small part of extract bioactivity.
- Taxon
- peachPrunus persicat0
- Compound
- ABAe0
- Outcome
- only a small part of their biological activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA content of the extracts was sufficient to account for only a small part of their biological activity.”
t0“Seeds of Peach”
The same questions in other papers
botanical · growth · Prunus persica (peach)Positive and negative results
4 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
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4 papers more in this group
See all 8 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.