Abstract
The objective of this study was to investigate characteristics of phenotypic parameters such as physiology, yield, and fruit quality responses of strawberry ( Fragaria × ananassa Duch.) to various light intensity conditions (VLICs), and to determine the correlations among these phenotypic parameters. Strawberry plants were cultivated in a smart greenhouse separated into four areas, three of which were completely shaded by curtains from 20:00 until 10:00 (3 hS), 12:00 (5 hS), and 14:00 (7 hS), respectively. The fourth area was a non-shaded control treatment (0 hS). The ambient light intensities during the experimental period for the 0, 3, 5, and 7 hS treatments were 1,285, 1,139, 770, and 364 mol⋅m –2 , respectively. Strawberry plants grown under low light intensity conditions experienced decreases in photosynthetic rate, stomatal conductance, and sugar accumulation compared to the 0 hS. Petiole generation and fruit yield were also sharply decreased in proportion to the degree of decrease in light intensity. In contrast, photosynthetic pigment content was shown to increase under low light conditions. Organic acid contents (excluding acetic acid) and leaflet size did not change significantly under low light conditions compared to the 0 hS. Changes to light intensity are considered to induce changes to the phenotypic characteristics of strawberry plants to favor growth using the energy and carbon skeletons obtained through respiration and photosynthesis. In the 7 hS treatment, where light intensity was drastically reduced, NPQ, qP, and R Fd values as chlorophyll a fluorescence parameters were significantly lowered, which could indicate their measurement as an important technique to check the stress response of plants grown in low light conditions.
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Claims 6
Claim · model-written summary
Strawberry plants under low light intensity had decreased photosynthetic rate, stomatal conductance and sugar accumulation compared with the 0 hS control.
- Taxon
- Strawberry
_single2.jpg?width=60)
Fragaria ×ananassae0 - Treatment
- low light intensity conditionse1
- Outcome
- photosynthetic rate, stomatal conductance, and sugar accumulatione1
- Direction
- decreasese1
- Comparator
- 0 hSe1
- Setting
- smart greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“Strawberry plants were cultivated in a smart greenhouse”
e1“Strawberry plants grown under low light intensity conditions experienced decreases in photosynthetic rate, stomatal conductance, and sugar accumulation compared to the 0 hS”
Claim · model-written summary
Petiole generation and fruit yield were sharply decreased in proportion to the decrease in light intensity.
- Taxon
- StrawberryFragaria ×ananassae0
- Treatment
- decrease in light intensitye2
- Outcome
- Petiole generation and fruit yielde2
- Direction
- sharply decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Strawberry plants were cultivated in a smart greenhouse”
e2“Petiole generation and fruit yield were also sharply decreased in proportion to the degree of decrease in light intensity”
Claim · model-written summary
Photosynthetic pigment content increased under low light conditions.
- Taxon
- StrawberryFragaria ×ananassae0
- Treatment
- low light conditionse3
- Outcome
- photosynthetic pigment contente3
- Direction
- increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Strawberry plants were cultivated in a smart greenhouse”
e3“photosynthetic pigment content was shown to increase under low light conditions”
Claim · model-written summary
Organic acid contents and leaflet size did not change significantly under low light conditions compared with the 0 hS control.
- Taxon
- StrawberryFragaria ×ananassae0
- Treatment
- low light conditionse4
- Outcome
- Organic acid contents (excluding acetic acid) and leaflet sizee4
- Direction
- did not change significantlye4
- Comparator
- 0 hSe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Strawberry plants were cultivated in a smart greenhouse”
e4“Organic acid contents (excluding acetic acid) and leaflet size did not change significantly under low light conditions compared to the 0 hS”
Claim · model-written summary
NPQ, qP and R Fd chlorophyll a fluorescence values were significantly lowered in the 7 hS low-light treatment.
- Taxon
- StrawberryFragaria ×ananassae0
- Treatment
- 7 hSe5
- Outcome
- NPQ, qP, and R Fd valuese5
- Direction
- significantly lowerede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Strawberry plants were cultivated in a smart greenhouse”
e5“In the 7 hS treatment, where light intensity was drastically reduced, NPQ, qP, and R Fd values as chlorophyll a fluorescence parameters were significantly lowered”
Claim · model-written summary
Measuring chlorophyll a fluorescence parameters may be an important technique to check the stress response of strawberry plants grown in low light.
- Taxon
- StrawberryFragaria ×ananassae0
- Outcome
- stress responsee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Strawberry plants were cultivated in a smart greenhouse”
e6“could indicate their measurement as an important technique to check the stress response of plants grown in low light conditions”
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