Abstract
Light is an important resource for plant growth and development, crops need to change their physiological characteristics to different light environments. Fragaria ananassa Duch. cv. Toyonoka. is an important economic plant which is widely planted at home. A greenhouse experiment was conducted from April 2010 with different sun-shading treatment, 85% (CK), 60% (T1), 35% (T2) and 10% (T3). After 7 days of shading stress, the physiological characteristics were slowly recovered. The results showed that (1) Under shading condition, Light saturation rate (Amax), Apparent Quantum Yield (AQY), Carboxylation Efficiency (CE), dark respiration (Rd), Light Saturation Point (LSP) and Light Compensation Point (LCP) became lower. (2) The maximal fluorescence (Fm), light energy transformation efficiency of PS II (Fv/Fm), actual photochemical efficiency of PS II in the light (Yield), photochemical quenching coefficient (qP) declined with shading stress increase. (3) There were significant difference in the chlorophyll fluorescence parameters among different treatment groups by the end of sun-shading treatment (p<0.05). After the light was recovered, the physiological characteristics could rapidly recover under low shading stress and moderate shading stress, while in severe shading stress the physiological characteristics hardly recover.
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Claims 7
Claim · model-written summary
Shading lowered Amax, AQY and CE in Toyonoka strawberry.
- Taxon
- Fragaria Ananassa Duch. cv. Toyonokat0
- Treatment
- shading conditione0
- Outcome
- Light saturation rate (Amax), Apparent Quantum Yield (AQY), Carboxylation Efficiency (CE)e0
- Direction
- lowere0
Not reportedComparator
Verbatim
e0“Under shading condition, Light saturation rate (Amax), Apparent Quantum Yield (AQY), Carboxylation Efficiency (CE), dark respiration (Rd), Light Saturation Point (LSP) and Light Compensation Point (LCP) became lower.”
t0“Fragaria Ananassa Duch. cv. Toyonoka”
Claim · model-written summary
Shading lowered dark respiration, LSP and LCP in Toyonoka strawberry.
- Taxon
- Fragaria Ananassa Duch. cv. Toyonokat0
- Treatment
- shading conditione0
- Outcome
- dark respiration (Rd), Light Saturation Point (LSP) and Light Compensation Point (LCP)e0
- Direction
- lowere0
Not reportedComparator
Verbatim
e0“Under shading condition, Light saturation rate (Amax), Apparent Quantum Yield (AQY), Carboxylation Efficiency (CE), dark respiration (Rd), Light Saturation Point (LSP) and Light Compensation Point (LCP) became lower.”
t0“Fragaria Ananassa Duch. cv. Toyonoka”
Claim · model-written summary
Fm, Fv/Fm and photochemical yield declined as shading stress increased.
Verbatim
e0“The maximal fluorescence (Fm), light energy transformation efficiency of PS II (Fv/Fm), actual photochemical efficiency of PS II in the light (Yield), photochemical quenching coefficient (qP) declined with shading stress increase.”
t0“Fragaria Ananassa Duch. cv. Toyonoka”
Claim · model-written summary
Photochemical quenching coefficient declined as shading stress increased.
Verbatim
e0“photochemical quenching coefficient (qP) declined with shading stress increase.”
t0“Fragaria Ananassa Duch. cv. Toyonoka”
Claim · model-written summary
Chlorophyll fluorescence parameters differed significantly among shading treatments at the end of treatment.
Verbatim
e0“There were significant difference in the chlorophyll fluorescence parameters among different treatment groups by the end of sun-shading treatment (p<0.05).”
t0“Fragaria Ananassa Duch. cv. Toyonoka”
Claim · model-written summary
After light recovery, physiological traits rapidly recovered after low or moderate shading stress.
- Taxon
- Fragaria Ananassa Duch. cv. Toyonokat0
- Treatment
- light was recoverede0
- Outcome
- physiological characteristicse0
- Direction
- rapidly recovere0
- Qualifier
- low shading stress and moderate shading stresse0
Not reportedComparator
Verbatim
e0“After the light was recovered, the physiological characteristics could rapidly recover under low shading stress and moderate shading stress”
t0“Fragaria Ananassa Duch. cv. Toyonoka”
Claim · model-written summary
After light recovery, physiological traits hardly recovered after severe shading stress.
- Taxon
- Fragaria Ananassa Duch. cv. Toyonokat0
- Treatment
- light was recoverede1
- Outcome
- physiological characteristicse0
- Direction
- hardly recovere0
- Qualifier
- severe shading stresse0
Not reportedComparator
Verbatim
e0“while in severe shading stress the physiological characteristics hardly recover.”
e1“After the light was recovered”
t0“Fragaria Ananassa Duch. cv. Toyonoka”
The same questions in other papers
shade · physiology: photosynthesis · Fragaria x ananassa (strawberry)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
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2 papers more in this group
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