Abstract
Long-day and short-day photoperiods were set artificially, with natural condition as the control, to examine photosynthetic parameters and chlorophyll fluorescence transient kinetics of 6-year-old 'Chunjie' peach cultivar (Prunus persica cv. Chunjie), and to investigate the effects of photoperiod on photosynthesis of the northern deciduous fruit trees. The tree advanced into the dormancy induction period under the short-day condition, and delayed under the long-day condition. In the dormancy induction period, the leaf net photosynthetic rate (Pn) and stomatal conductance (g(s)) decreased, and the intercellular CO2 concentration (Ci) increased, suggesting that the Pn decreased because of non-stomatal limitation. Maximum quantum yield for primary photochemistry (PhiPo, or Fv/Fm), potential activity (Fv/Fo), probability that a trapped exciton moved an electron into the electron transport chain beyond Q(A)-(Psi(o)) and performance index on absorption basis (Pl(ABS)) decreased in the dormancy induction period, suggesting that the electron transport capacity of photosynthetic electron transport chain was inhibited, possibly due to the damage to downstream electron transport chain (after Q(A)- acceptor) of PS II reaction center. Long-day photoperiod improved Pn in the dormancy induction period, and reduced the range of decline in PI(ABS) and the injured degree of photosystem. Short-day photoperiod deepened and accelerated the damage to photosynthetic apparatus significantly. The induced effect of photoperiod was associated with the dormancy processes.
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Claims 17
Claim · model-written summary
Short days advanced peach dormancy induction.
- Taxon
- peach
Prunus persicat0 - Treatment
- short-day conditione0
- Outcome
- dormancy induction periode0
- Direction
- advancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tree advanced into the dormancy induction period under the short-day condition”
t0“peach”
Claim · model-written summary
Long days delayed peach dormancy induction.
- Taxon
- peachPrunus persicat0
- Treatment
- long-day conditione0
- Outcome
- dormancy induction periode1
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and delayed under the long-day condition”
e1“The tree advanced into the dormancy induction period”
t0“peach”
Claim · model-written summary
Peach leaf net photosynthetic rate decreased during dormancy induction.
- Taxon
- peachPrunus persicat0
- Organ / stage
- leafe0
- Outcome
- leaf net photosynthetic rate (Pn)e0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the dormancy induction period, the leaf net photosynthetic rate (Pn) and stomatal conductance (g(s)) decreased”
t0“peach”
Claim · model-written summary
Peach stomatal conductance decreased during dormancy induction.
- Taxon
- peachPrunus persicat0
- Outcome
- stomatal conductance (g(s))e0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the dormancy induction period, the leaf net photosynthetic rate (Pn) and stomatal conductance (g(s)) decreased”
t0“peach”
Claim · model-written summary
Peach intercellular CO2 concentration increased during dormancy induction.
- Taxon
- peachPrunus persicat0
- Outcome
- intercellular CO2 concentration (Ci)e0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the intercellular CO2 concentration (Ci) increased”
t0“peach”
Claim · model-written summary
The authors attributed reduced peach photosynthesis to non-stomatal limitation.
- Taxon
- peachPrunus persicat0
- Outcome
- Pn decreasede0
- Direction
- decreasede0
- Qualifier
- non-stomatal limitatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting that the Pn decreased because of non-stomatal limitation”
t0“peach”
Claim · model-written summary
Maximum quantum yield for primary photochemistry decreased during peach dormancy induction.
- Taxon
- peachPrunus persicat0
- Outcome
- Maximum quantum yield for primary photochemistry (PhiPo, or Fv/Fm)e0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum quantum yield for primary photochemistry (PhiPo, or Fv/Fm), potential activity (Fv/Fo), probability that a trapped exciton moved an electron into the electron transport chain beyond Q(A)-(Psi(o)) and performance index on absorption basis (Pl(ABS)) decreased in the dormancy induction period”
t0“peach”
Claim · model-written summary
Potential activity decreased during peach dormancy induction.
- Taxon
- peachPrunus persicat0
- Outcome
- potential activity (Fv/Fo)e0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potential activity (Fv/Fo), probability that a trapped exciton moved an electron into the electron transport chain beyond Q(A)-(Psi(o)) and performance index on absorption basis (Pl(ABS)) decreased in the dormancy induction period”
t0“peach”
Claim · model-written summary
Electron transport probability beyond Q(A) decreased during peach dormancy induction.
- Taxon
- peachPrunus persicat0
- Outcome
- probability that a trapped exciton moved an electron into the electron transport chain beyond Q(A)-(Psi(o))e0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“probability that a trapped exciton moved an electron into the electron transport chain beyond Q(A)-(Psi(o)) and performance index on absorption basis (Pl(ABS)) decreased in the dormancy induction period”
t0“peach”
Claim · model-written summary
Performance index on absorption basis decreased during peach dormancy induction.
- Taxon
- peachPrunus persicat0
- Outcome
- performance index on absorption basis (Pl(ABS))e0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“performance index on absorption basis (Pl(ABS)) decreased in the dormancy induction period”
t0“peach”
Claim · model-written summary
The authors inferred inhibition of peach photosynthetic electron transport capacity, possibly from downstream PSII damage.
- Taxon
- peachPrunus persicat0
- Outcome
- electron transport capacity of photosynthetic electron transport chain was inhibitede0
- Qualifier
- possibly due to the damage to downstream electron transport chain (after Q(A)- acceptor) of PS II reaction centere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting that the electron transport capacity of photosynthetic electron transport chain was inhibited, possibly due to the damage to downstream electron transport chain (after Q(A)- acceptor) of PS II reaction center”
t0“peach”
Claim · model-written summary
Long-day photoperiod improved peach Pn during dormancy induction.
- Taxon
- peachPrunus persicat0
- Treatment
- Long-day photoperiode0
- Outcome
- Pne0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-day photoperiod improved Pn in the dormancy induction period”
t0“peach”
Claim · model-written summary
Long-day photoperiod reduced the decline in peach PI(ABS).
- Taxon
- peachPrunus persicat0
- Treatment
- Long-day photoperiode0
- Outcome
- range of decline in PI(ABS)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-day photoperiod improved Pn in the dormancy induction period, and reduced the range of decline in PI(ABS) and the injured degree of photosystem”
t0“peach”
Claim · model-written summary
Long-day photoperiod reduced peach photosystem injury.
- Taxon
- peachPrunus persicat0
- Treatment
- Long-day photoperiode0
- Outcome
- injured degree of photosysteme0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-day photoperiod improved Pn in the dormancy induction period, and reduced the range of decline in PI(ABS) and the injured degree of photosystem”
t0“peach”
Claim · model-written summary
Short-day photoperiod deepened photosynthetic apparatus damage in peach.
- Taxon
- peachPrunus persicat0
- Treatment
- Short-day photoperiode0
- Outcome
- damage to photosynthetic apparatuse0
- Direction
- deepenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Short-day photoperiod deepened and accelerated the damage to photosynthetic apparatus significantly”
t0“peach”
Claim · model-written summary
Short-day photoperiod accelerated photosynthetic apparatus damage in peach.
- Taxon
- peachPrunus persicat0
- Treatment
- Short-day photoperiode0
- Outcome
- damage to photosynthetic apparatuse0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Short-day photoperiod deepened and accelerated the damage to photosynthetic apparatus significantly”
t0“peach”
Claim · model-written summary
Photoperiod effects in peach were associated with dormancy processes.
- Taxon
- peachPrunus persicat0
- Treatment
- photoperiode0
- Outcome
- dormancy processese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The induced effect of photoperiod was associated with the dormancy processes”
t0“peach”
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See all 16 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.