Abstract
A greenhouse experiment was conducted to determine the effects of shade treatments (0, 30, 47 and 63%) on photosynthetic and growth responses of `Redchief' strawberries. Net photosynthesis (Pn) measured on plants under shade decreased as % shade increased. Pn of plants grown under shade but measured under saturating light intensities decreased after 30% shade. Light saturation curves of leaves allowed to expand in full sun and then placed under shade indicated a decrease in the saturation rate and point under 63% shade. Leaves which expanded under shade had decreased saturation rates and points at all levels. Specific leaf weight and total plant dry weight decreased linearly as % shade increased. A field study in which plants were either shaded in the fall or in the fall and spring demonstrated a decreasing trend in berry number for plots which were shaded in the fall and spring. Berry number decreased in fall-shaded plants after 30% shade. In both cases, berry weight decreased with increasing shade.
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Claims 9
Claim · model-written summary
Photosynthesis under shade decreased with increasing shade.
Not reportedComparator
Verbatim
e0“Net photosynthesis (Pn) measured on plants under shade decreased as % shade increased.”
t0“STRAWBERRIES”
Claim · model-written summary
Photosynthesis under saturating light decreased after 30% growth shade.
Not reportedComparator
Verbatim
e0“Pn of plants grown under shade but measured under saturating light intensities decreased after 30% shade.”
t0“STRAWBERRIES”
Claim · model-written summary
Leaves expanded in sun then placed under 63% shade had lower light saturation rate and point.
Verbatim
e0“Light saturation curves of leaves allowed to expand in full sun and then placed under shade indicated a decrease in the saturation rate and point under 63% shade.”
t0“STRAWBERRIES”
Claim · model-written summary
Leaves expanded under shade had lower light saturation rates and points at all levels.
- Taxon
- STRAWBERRIESt0
- Treatment
- shadee0
- Outcome
- saturation rates and pointse0
- Direction
- decreasede0
- Qualifier
- at all levelse0
Not reportedComparator
Verbatim
e0“Leaves which expanded under shade had decreased saturation rates and points at all levels.”
t0“STRAWBERRIES”
Claim · model-written summary
Specific leaf weight declined linearly with increasing shade.
Not reportedComparator
Verbatim
e0“Specific leaf weight and total plant dry weight decreased linearly as % shade increased.”
t0“STRAWBERRIES”
Claim · model-written summary
Total plant dry weight declined linearly with increasing shade.
Not reportedComparator
Verbatim
e0“Specific leaf weight and total plant dry weight decreased linearly as % shade increased.”
t0“STRAWBERRIES”
Claim · model-written summary
Berry number trended downward with fall and spring shade.
- Taxon
- STRAWBERRIESt0
- Treatment
- shaded in the fall and springe0
- Outcome
- berry numbere0
- Direction
- decreasinge0
- Setting
- field studye0
Not reportedComparator
Verbatim
e0“A field study in which plants were either shaded in the fall or in the fall and spring demonstrated a decreasing trend in berry number for plots which were shaded in the fall and spring.”
t0“STRAWBERRIES”
Claim · model-written summary
Fall shade above 30% reduced berry number.
Not reportedComparator
Verbatim
e0“Berry number decreased in fall-shaded plants after 30% shade.”
t0“STRAWBERRIES”
Claim · model-written summary
Berry weight fell with increasing shade in both timing regimes.
Not reportedComparator
Verbatim
e0“In both cases, berry weight decreased with increasing shade.”
t0“STRAWBERRIES”
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