Abstract
Experiment was conducted with potted strawberry cultivar Toyonoka for studying effects of shading on its photosynthesis and chlorophyll fluorescence characteristics. The results showed that the petiole length, leaf area and the content of chlorophyll and carotenoid under shading condition were higher than those of control, but the specific leaf weight (SLW), carboxylation efficiency (CE), dark respiration (Rd), light saturation point (LSP) and light compensation point (LCP) became lower. Furthermore, shading increased the apparent quantum yield (AQY) and the CO2 compensation point (CCP), which represented that the plants would be more efficient to transfer light quantum into chemical energy under low light stress, but the affinity to CO2 was decreased. Because of shading, the highest sunlight intensity at noon, about 2000 μmol/m2·s, declined to 600 μmol/m2·s, and the diurnal variation, a double-peak curve, of net photosynthetic rate (Pn) of strawberry under nature environment became a single-peak, and the daily accumulation of photosynthate decreased about 38%. Shading increased the leaf stomatal conductance (Gs) but the transpiration rate was lower than that of control, which was the result of lower temperature under shading. Shading also decreased the minimal fluorescence (Fo) but promoted the PSⅡmaximal photochemical efficiency (Fv/Fm), implying that shading might protect integration of the photosynthetic membrane systems and photochemical efficiency against the strong light stress. The results above indicated that shading was indeed beneficial for strawberry growth and alleviated photosynthetic photoinhibition, but it should be noted to increase CO2 concentration for strawberry under low light environment.
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Claims 18
Claim · model-written summary
Shading changed petiole length, leaf area relative to control.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- shading conditione0
- Outcome
- petiole length, leaf areae0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
t0“strawberry cultivar”
e0“The results showed that the petiole length, leaf area and the content of chlorophyll and carotenoid under shading condition were higher than those of control, but the specific leaf weight (SLW), carboxylation efficiency (CE), dark respiration (Rd), light saturation point (LSP) and light compensation point (LCP) became lower.”
Claim · model-written summary
Shading changed content of chlorophyll and carotenoid relative to control.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shading conditione0
- Outcome
- content of chlorophyll and carotenoide0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“The results showed that the petiole length, leaf area and the content of chlorophyll and carotenoid under shading condition were higher than those of control, but the specific leaf weight (SLW), carboxylation efficiency (CE), dark respiration (Rd), light saturation point (LSP) and light compensation point (LCP) became lower.”
Claim · model-written summary
Shading changed specific leaf weight (SLW) relative to control.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shading conditione0
- Outcome
- specific leaf weight (SLW)e0
- Direction
- lowere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“The results showed that the petiole length, leaf area and the content of chlorophyll and carotenoid under shading condition were higher than those of control, but the specific leaf weight (SLW), carboxylation efficiency (CE), dark respiration (Rd), light saturation point (LSP) and light compensation point (LCP) became lower.”
Claim · model-written summary
Shading changed carboxylation efficiency (CE) relative to control.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shading conditione0
- Outcome
- carboxylation efficiency (CE)e0
- Direction
- lowere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“The results showed that the petiole length, leaf area and the content of chlorophyll and carotenoid under shading condition were higher than those of control, but the specific leaf weight (SLW), carboxylation efficiency (CE), dark respiration (Rd), light saturation point (LSP) and light compensation point (LCP) became lower.”
Claim · model-written summary
Shading changed dark respiration (Rd) relative to control.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shading conditione0
- Outcome
- dark respiration (Rd)e0
- Direction
- lowere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“The results showed that the petiole length, leaf area and the content of chlorophyll and carotenoid under shading condition were higher than those of control, but the specific leaf weight (SLW), carboxylation efficiency (CE), dark respiration (Rd), light saturation point (LSP) and light compensation point (LCP) became lower.”
Claim · model-written summary
Shading changed light saturation point (LSP) and light compensation point (LCP) relative to control.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shading conditione0
- Outcome
- light saturation point (LSP) and light compensation point (LCP)e0
- Direction
- lowere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“The results showed that the petiole length, leaf area and the content of chlorophyll and carotenoid under shading condition were higher than those of control, but the specific leaf weight (SLW), carboxylation efficiency (CE), dark respiration (Rd), light saturation point (LSP) and light compensation point (LCP) became lower.”
Claim · model-written summary
Shading increased apparent quantum yield (AQY).
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shadinge0
- Outcome
- apparent quantum yield (AQY)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“Furthermore, shading increased the apparent quantum yield (AQY) and the CO2 compensation point (CCP), which represented that the plants would be more efficient to transfer light quantum into chemical energy under low light stress, but the affinity to CO2 was decreased.”
Claim · model-written summary
Shading increased CO2 compensation point (CCP).
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shadinge0
- Outcome
- CO2 compensation point (CCP)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“Furthermore, shading increased the apparent quantum yield (AQY) and the CO2 compensation point (CCP), which represented that the plants would be more efficient to transfer light quantum into chemical energy under low light stress, but the affinity to CO2 was decreased.”
Claim · model-written summary
Shading decreased affinity to CO2.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shadinge0
- Outcome
- affinity to CO2e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“Furthermore, shading increased the apparent quantum yield (AQY) and the CO2 compensation point (CCP), which represented that the plants would be more efficient to transfer light quantum into chemical energy under low light stress, but the affinity to CO2 was decreased.”
Claim · model-written summary
Shading reduced noon sunlight intensity from about 2000 to 600 μmol/m2·s.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shadinge0
- Outcome
- highest sunlight intensity at noone0
- Direction
- declinede0
- Value
- 600 μmol/m2·se0
- Qualifier
- about 2000 μmol/m2·se0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“Because of shading, the highest sunlight intensity at noon, about 2000 μmol/m2·s, declined to 600 μmol/m2·s, and the diurnal variation, a double-peak curve, of net photosynthetic rate (Pn) of strawberry under nature environment became a single-peak, and the daily accumulation of photosynthate decreased about 38%.”
Claim · model-written summary
Shading changed the diurnal net photosynthetic rate curve from double peak to single peak.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shadinge0
- Outcome
- diurnal variation, a double-peak curve, of net photosynthetic rate (Pn)e0
- Qualifier
- became a single-peake0
- Comparator
- nature environmente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“Because of shading, the highest sunlight intensity at noon, about 2000 μmol/m2·s, declined to 600 μmol/m2·s, and the diurnal variation, a double-peak curve, of net photosynthetic rate (Pn) of strawberry under nature environment became a single-peak, and the daily accumulation of photosynthate decreased about 38%.”
Claim · model-written summary
Shading decreased daily photosynthate accumulation about 38%.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- shadinge0
- Outcome
- daily accumulation of photosynthatee0
- Direction
- decreasede0
- Value
- 38%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“Because of shading, the highest sunlight intensity at noon, about 2000 μmol/m2·s, declined to 600 μmol/m2·s, and the diurnal variation, a double-peak curve, of net photosynthetic rate (Pn) of strawberry under nature environment became a single-peak, and the daily accumulation of photosynthate decreased about 38%.”
Claim · model-written summary
Shading changed leaf stomatal conductance (Gs).
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Shadinge0
- Outcome
- leaf stomatal conductance (Gs)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“Shading increased the leaf stomatal conductance (Gs) but the transpiration rate was lower than that of control, which was the result of lower temperature under shading.”
Claim · model-written summary
Shading changed transpiration rate.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Shadinge0
- Outcome
- transpiration ratee0
- Direction
- lowere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“Shading increased the leaf stomatal conductance (Gs) but the transpiration rate was lower than that of control, which was the result of lower temperature under shading.”
Claim · model-written summary
Shading decreased minimal fluorescence (Fo).
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Shadinge0
- Outcome
- minimal fluorescence (Fo)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“Shading also decreased the minimal fluorescence (Fo) but promoted the PSⅡmaximal photochemical efficiency (Fv/Fm), implying that shading might protect integration of the photosynthetic membrane systems and photochemical efficiency against the strong light stress.”
Claim · model-written summary
Shading promoted PSⅡmaximal photochemical efficiency (Fv/Fm).
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Shadinge0
- Outcome
- PSⅡmaximal photochemical efficiency (Fv/Fm)e0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“strawberry cultivar”
e0“Shading also decreased the minimal fluorescence (Fo) but promoted the PSⅡmaximal photochemical efficiency (Fv/Fm), implying that shading might protect integration of the photosynthetic membrane systems and photochemical efficiency against the strong light stress.”
Claim · model-written summary
The authors concluded that shading benefited strawberry growth and alleviated photoinhibition.
- Taxon
- strawberryFragaria ×ananassae0
- Outcome
- strawberry growth and alleviated photosynthetic photoinhibitione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results above indicated that shading was indeed beneficial for strawberry growth and alleviated photosynthetic photoinhibition, but it should be noted to increase CO2 concentration for strawberry under low light environment.”
Claim · model-written summary
The authors recommended increasing CO2 under low light.
- Taxon
- strawberryFragaria ×ananassae0
- Outcome
- increase CO2 concentration for strawberry under low light environmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results above indicated that shading was indeed beneficial for strawberry growth and alleviated photosynthetic photoinhibition, but it should be noted to increase CO2 concentration for strawberry under low light environment.”
The same questions in other papers
shade · growth · Fragaria x ananassa (strawberry)Results differ
6 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- negative
7 papers more in this group
See all 11 papers →shade · physiology: pigments · Fragaria x ananassa (strawberry)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
shade · physiology: photosynthesis · Fragaria x ananassa (strawberry)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
2 papers more in this group
See all 6 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.