Abstract
Timing of budbreak in response to winter chilling is a critical factor in the suitability of peach [ Prunus persica (L.) Batsch] cultivars to moderate climates such as that in the southeastern United States. Much of the research on chilling and dormancy has used excised cuttings or potted trees exposed to various treatments and forced under controlled conditions. Light is not generally considered an important factor in such experiments, and the effect of light during forcing has been little studied. The objective of this research was to compare light versus dark conditions during forcing as well as the effects of different colors of light during forcing. Our results showed that after chilling had been minimally satisfied, peach floral and vegetative budbreak occurred faster when forced in the presence of light than when forced in darkness. Light increased budbreak rate as well as the total percentage of budbreak. Red, yellow, and fluorescent light were more promotive in increasing budbreak than blue, green, infrared, or incandescent light, suggesting a role for phytochrome. Promotive effects of light were less when buds had received enough natural chill and heat to break within a week of forcing at 18 °C. In conclusion, light during forcing can have a significant effect of budbreak and needs to be considered when doing research on chilling and dormancy.
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Claims 6
Claim · model-written summary
After minimal chilling, light accelerated floral and vegetative budbreak versus darkness.
- Taxon
- peach
Prunus persicae0 - Treatment
- presence of lighte0
- Outcome
- floral and vegetative budbreake0
- Direction
- fastere0
- Comparator
- darknesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after chilling had been minimally satisfied, peach floral and vegetative budbreak occurred faster when forced in the presence of light than when forced in darkness.”
Claim · model-written summary
Light increased budbreak rate.
- Taxon
- peachPrunus persicae1
- Treatment
- Lighte0
- Outcome
- budbreak ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light increased budbreak rate as well as the total percentage of budbreak.”
e1“peach [ Prunus persica (L.) Batsch]”
Claim · model-written summary
Light increased total budbreak percentage.
- Taxon
- peachPrunus persicae1
- Treatment
- Lighte0
- Outcome
- total percentage of budbreake0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light increased budbreak rate as well as the total percentage of budbreak.”
e1“peach [ Prunus persica (L.) Batsch]”
Claim · model-written summary
Red, yellow and fluorescent light promoted budbreak more than blue, green, infrared or incandescent light.
- Taxon
- peachPrunus persicae1
- Treatment
- Red, yellow, and fluorescent lighte0
- Outcome
- budbreake0
- Direction
- more promotivee0
- Comparator
- blue, green, infrared, or incandescent lighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Red, yellow, and fluorescent light were more promotive in increasing budbreak than blue, green, infrared, or incandescent light, suggesting a role for phytochrome.”
e1“peach [ Prunus persica (L.) Batsch]”
Claim · model-written summary
The authors suggested phytochrome may mediate the light effect.
- Taxon
- peachPrunus persicae1
- Gene
- phytochromee0
- Outcome
- role for phytochromee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting a role for phytochrome”
e1“peach [ Prunus persica (L.) Batsch]”
Claim · model-written summary
Light promotion weakened after enough natural chill and heat for budbreak within a week at 18 °C.
- Taxon
- peachPrunus persicae1
- Treatment
- lighte0
- Outcome
- Promotive effects of lighte0
- Direction
- lesse0
- Qualifier
- enough natural chill and heat to break within a week of forcing at 18 °Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Promotive effects of light were less when buds had received enough natural chill and heat to break within a week of forcing at 18 °C.”
e1“peach [ Prunus persica (L.) Batsch]”
The same questions in other papers
light · phenology · Prunus persica (peach)Positive and negative results
1 in the opposite direction
- negative
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.