Abstract
Taking 6-year-old "Chunjie" peach as test material, and the peach in natural condition as the control, this paper investigated induced effects of long-day and short-day photoperiod on dormancy and responses of chilling resistance to photoperiodic induction during dormancy induction process. The results showed that the trees of long-day and short-day treatments could both enter dormancy induction under the gradually decreasing temperature. The long-day treatment was 1 week later than the control, while the short-day treatment was 1 week earlier. The total water content and free water content both decreased, and the bound water content and the ratio of bound water/total water increased with the development of dormancy. SOD and CAT activities changed as unimodal curve during dormancy induction, and the peak values appeared at the late stage of dormancy induction, POD activity decreased rapidly after the start of dormancy induction, and rebounded to form a small peak at the late stage of dormancy induction. The soluble protein content declined, proline and malonaldehyde (MDA) increased continuously, and the injury rate increased. Long-day could increase SOD and CAT activities and proline content, alleviate the decline of POD activity and soluble protein content, and reduce the growth rate of MDA and injury rate, which indicated leaf damage was lighter in long-day treatment than in the control. However, they changed differently under short-day treatment, especially the leaf injury rate was higher than the control, exhibiting a lower chilling resistance. Prolonging illumination was suggested to improve leaf chilling resistance in practical production if environmental temperature permitted.
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Claims 14
Claim · model-written summary
Long-day trees entered dormancy induction one week later than the natural-condition control.
- Taxon
- peach
Prunus persicat0 - Treatment
- long-day treatmente0
- Outcome
- dormancy inductione1
- Direction
- latere0
- Value
- 1 weeke0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The long-day treatment was 1 week later than the control”
t0“peach”
e1“enter dormancy induction”
Claim · model-written summary
Short-day trees entered dormancy induction one week earlier than control.
- Taxon
- peachPrunus persicat0
- Treatment
- short-day treatmente0
- Outcome
- dormancy inductione1
- Direction
- earliere0
- Value
- 1 weeke0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the short-day treatment was 1 week earlier.”
t0“peach”
e1“enter dormancy induction”
Claim · model-written summary
Total and free water content decreased as dormancy developed.
- Taxon
- peachPrunus persicat0
- Organ / stage
- dormancye0
- Outcome
- total water content and free water contente0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total water content and free water content both decreased, and the bound water content and the ratio of bound water/total water increased with the development of dormancy.”
t0“peach”
Claim · model-written summary
Bound water content and its share of total water increased with dormancy development.
- Taxon
- peachPrunus persicat0
- Organ / stage
- dormancye0
- Outcome
- bound water content and the ratio of bound water/total watere0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the bound water content and the ratio of bound water/total water increased with the development of dormancy.”
t0“peach”
Claim · model-written summary
SOD and CAT activities followed unimodal curves and peaked late in dormancy induction.
- Taxon
- peachPrunus persicat0
- Organ / stage
- late stage of dormancy inductione0
- Gene
- SOD and CATe0
- Outcome
- activities changed as unimodal curvee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SOD and CAT activities changed as unimodal curve during dormancy induction, and the peak values appeared at the late stage of dormancy induction”
t0“peach”
Claim · model-written summary
POD activity fell rapidly after dormancy induction began and rebounded late.
- Taxon
- peachPrunus persicat0
- Organ / stage
- dormancy inductione0
- Gene
- PODe0
- Outcome
- POD activitye0
- Direction
- decreased rapidlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“POD activity decreased rapidly after the start of dormancy induction, and rebounded to form a small peak at the late stage of dormancy induction.”
t0“peach”
Claim · model-written summary
Soluble protein content declined during dormancy induction.
- Taxon
- peachPrunus persicat0
- Outcome
- soluble protein contente0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soluble protein content declined, proline and malonaldehyde (MDA) increased continuously, and the injury rate increased.”
t0“peach”
Claim · model-written summary
Proline and malonaldehyde rose continuously during dormancy induction.
- Taxon
- peachPrunus persicat0
- Outcome
- proline and malonaldehyde (MDA)e0
- Direction
- increased continuouslye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline and malonaldehyde (MDA) increased continuously”
t0“peach”
Claim · model-written summary
Leaf injury rate increased during dormancy induction.
- Taxon
- peachPrunus persicat0
- Outcome
- injury ratee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the injury rate increased.”
t0“peach”
Claim · model-written summary
Long days increased SOD and CAT activities and proline content.
- Taxon
- peachPrunus persicat0
- Treatment
- Long-daye0
- Outcome
- SOD and CAT activities and proline contente0
- Direction
- increasee0
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-day could increase SOD and CAT activities and proline content”
t0“peach”
e1“than in the control”
Claim · model-written summary
Long days alleviated declines in POD activity and soluble protein content.
- Taxon
- peachPrunus persicat0
- Treatment
- Long-daye0
- Outcome
- POD activity and soluble protein contente0
- Direction
- alleviate the declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-day could increase SOD and CAT activities and proline content, alleviate the decline of POD activity and soluble protein content”
t0“peach”
Claim · model-written summary
Long days reduced the growth rate of MDA and leaf injury rate.
- Taxon
- peachPrunus persicat0
- Treatment
- Long-daye0
- Outcome
- growth rate of MDA and injury ratee0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-day could increase SOD and CAT activities and proline content, alleviate the decline of POD activity and soluble protein content, and reduce the growth rate of MDA and injury rate”
t0“peach”
Claim · model-written summary
Short-day treatment increased leaf injury relative to control, indicating lower chilling resistance.
- Taxon
- peachPrunus persicat0
- Treatment
- short-day treatmente1
- Outcome
- leaf injury ratee0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf injury rate was higher than the control, exhibiting a lower chilling resistance.”
t0“peach”
e1“under short-day treatment”
Claim · model-written summary
The authors suggested prolonged illumination to improve leaf chilling resistance when temperature permits.
- Taxon
- peachPrunus persicat0
- Treatment
- Prolonging illuminatione0
- Outcome
- improve leaf chilling resistancee0
- Qualifier
- if environmental temperature permittede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Prolonging illumination was suggested to improve leaf chilling resistance in practical production if environmental temperature permitted.”
t0“peach”
The same questions in other papers
light · crop injury · Prunus persica (peach)Positive and negative results
2 in the opposite direction
- positive
- positive
light · physiology: antioxidant enzymes · Prunus persica (peach)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- 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.