Abstract
SummaryTwo-year-old peach (Prunus persica Sieb, et Zucc. cv. Ohkubo) trees were shaded so as to receive approximately 50%, 25%, 10% of full daylight from the bud sprouting stage, and their growth was compared with that of unshaded control trees two months after treatment. Compared with those in the control group, average leaf area was increased 45%, 71% and 36% by 50%, 25% and 10% of full sun, respectively. Shade-grown leaves were thinner, flatter, and darker green than sun-grown ones; leaves grown in heavy shade (10% of full sun) had one or two poorly developed palisade layers; in contrast, sun-grown leaves had two or three layers of well developed palisade cells. Dry weight per fresh weight or per unit area of leaf was highest in sun-grown leaves and lowest in leaves grown in heavy shade. Stomatal density decreased with shading. Chlorophyll content per unit leaf area or per dry weight increased with shading. Shade-leaf chloroplasts (10% and 25% of full sun) were larger and rich in thylakoids, while sun-leaf chloroplasts (50% and 100% of full sun) showed poorly stacked grana. Starch accumulation in the chloroplasts of sun- leaves was markedly higher than in shade-leaf chloroplasts. In the smaller chloroplasts from the palisade cells in sun-leaves, chloroplast nuclei (ct-nuclei) were localized at the periphery of the plastids, frequently in a discrete band, differing from the central random location of ct-nuclei in the shade-leaves (10% and 25% of full sun).
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Claims 12
Claim · model-written summary
At 50% full daylight, average peach leaf area rose 45% against unshaded controls.
- Taxon
- peach
Prunus persicat0 - Treatment
- 50%e0
- Outcome
- average leaf areae0
- Direction
- increasede0
- Value
- 45%e0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with those in the control group, average leaf area was increased 45%, 71% and 36% by 50%, 25% and 10% of full sun, respectively”
t0“peach”
Claim · model-written summary
At 25% full daylight, average peach leaf area rose 71% against unshaded controls.
- Taxon
- peachPrunus persicat0
- Treatment
- 25%e0
- Outcome
- average leaf areae0
- Direction
- increasede0
- Value
- 71%e0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with those in the control group, average leaf area was increased 45%, 71% and 36% by 50%, 25% and 10% of full sun, respectively”
t0“peach”
Claim · model-written summary
At 10% full daylight, average peach leaf area rose 36% against unshaded controls.
- Taxon
- peachPrunus persicat0
- Treatment
- 10% of full sune0
- Outcome
- average leaf areae0
- Direction
- increasede0
- Value
- 36%e0
- Comparator
- control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with those in the control group, average leaf area was increased 45%, 71% and 36% by 50%, 25% and 10% of full sun, respectively”
t0“peach”
Claim · model-written summary
Shade-grown leaves were thinner, flatter and darker green than sun-grown leaves.
- Taxon
- peachPrunus persicat0
- Treatment
- Shade-growne0
- Outcome
- leaves were thinner, flatter, and darker greene0
- Comparator
- sun-growne0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shade-grown leaves were thinner, flatter, and darker green than sun-grown ones”
t0“peach”
Claim · model-written summary
Heavy shade produced one or two poorly developed palisade layers, versus two or three developed layers in sun leaves.
- Taxon
- peachPrunus persicat0
- Treatment
- heavy shade (10% of full sun)e0
- Outcome
- palisade layerse0
- Direction
- poorly developede0
- Value
- one or twoe0
- Comparator
- sun-grown leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaves grown in heavy shade (10% of full sun) had one or two poorly developed palisade layers; in contrast, sun-grown leaves had two or three layers of well developed palisade cells”
t0“peach”
Claim · model-written summary
Leaf dry weight per fresh weight or area was highest in sun leaves and lowest under heavy shade.
- Taxon
- peachPrunus persicat0
- Treatment
- heavy shadee0
- Outcome
- Dry weight per fresh weight or per unit area of leafe0
- Direction
- loweste0
- Comparator
- sun-grown leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry weight per fresh weight or per unit area of leaf was highest in sun-grown leaves and lowest in leaves grown in heavy shade”
t0“peach”
Claim · model-written summary
Stomatal density declined with shading.
- Taxon
- peachPrunus persicat0
- Treatment
- shadinge0
- Outcome
- Stomatal densitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stomatal density decreased with shading”
t0“peach”
Claim · model-written summary
Chlorophyll content per leaf area or dry weight increased with shading.
- Taxon
- peachPrunus persicat0
- Treatment
- shadinge0
- Outcome
- Chlorophyll content per unit leaf area or per dry weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll content per unit leaf area or per dry weight increased with shading”
t0“peach”
Claim · model-written summary
Shade-leaf chloroplasts were larger and rich in thylakoids.
- Taxon
- peachPrunus persicat0
- Treatment
- 10% and 25% of full sune0
- Outcome
- chloroplastse0
- Direction
- largere0
- Qualifier
- rich in thylakoidse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shade-leaf chloroplasts (10% and 25% of full sun) were larger and rich in thylakoids”
t0“peach”
Claim · model-written summary
Sun-leaf chloroplasts at 50% and 100% daylight showed poorly stacked grana.
- Taxon
- peachPrunus persicat0
- Outcome
- poorly stacked granae0
- Qualifier
- 50% and 100% of full sune0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sun-leaf chloroplasts (50% and 100% of full sun) showed poorly stacked grana”
t0“peach”
Claim · model-written summary
Starch accumulated much more in sun-leaf than shade-leaf chloroplasts.
- Taxon
- peachPrunus persicat0
- Treatment
- sun- leavese0
- Outcome
- Starch accumulation in the chloroplastse0
- Direction
- markedly highere0
- Comparator
- shade-leaf chloroplastse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Starch accumulation in the chloroplasts of sun- leaves was markedly higher than in shade-leaf chloroplasts”
t0“peach”
Claim · model-written summary
In smaller sun-leaf palisade chloroplasts, chloroplast nuclei were peripheral, unlike their central random position in shade leaves.
- Taxon
- peachPrunus persicat0
- Treatment
- sun-leavese0
- Outcome
- chloroplast nuclei (ct-nuclei) were localized at the periphery of the plastidse0
- Comparator
- shade-leaves (10% and 25% of full sun)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the smaller chloroplasts from the palisade cells in sun-leaves, chloroplast nuclei (ct-nuclei) were localized at the periphery of the plastids, frequently in a discrete band, differing from the central random location of ct-nuclei in the shade-leaves (10% and 25% of full sun)”
t0“peach”
The same questions in other papers
light · growth · Prunus persica (peach)Positive and negative results
13 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
12 papers more in this group
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.