Abstract
Abstract Tomato plants ( Lycopersicon esculentum Mill. cv. Laura), pruned to a single-flower truss, were exposed to 90 μmol·s −1 ·m −2 supplemental photosynthetic lighting (0400 to 2200 hr ) during the developmental period: a) anthesis to initial fruit set, b) anthesis to mature-green fruit, or c) anthesis to red-ripe fruit. The yield response was compared to plants receiving d) no supplemental photosynthetic lighting after incipient anthesis. The greatest increase in average fruit weight was produced with continued supplemental lighting during the developmental-period initial fruit set to the mature-green stage. Net photosynthetic activity, μmol CO 2 /min per dm 2 , was the greatest in the canopy during early anthesis and then steadily declined as the canopy aged. Net whole plant photosynthetic activity, μmol CO 2 /min per plant, increased steadily after the early anthesis stage of development to a peak rate during the rapid fruit development stage. Net whole plant photosynthetic activity then declined as the plant approached the mature-green and then finally the red-ripe stage of fruit development.
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Claims 5
Claim · model-written summary
Lighting through initial fruit set to mature-green stage gave the greatest average fruit weight increase.
- Taxon
- Tomato
Solanum lycopersicume1 - Organ / stage
- initial fruit set to the mature-green stagee0
- Treatment
- continued supplemental lightinge0
- Outcome
- average fruit weighte0
- Direction
- greatest increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest increase in average fruit weight was produced with continued supplemental lighting during the developmental-period initial fruit set to the mature-green stage”
e1“Tomato plants”
Claim · model-written summary
Canopy net photosynthesis peaked at early anthesis.
- Taxon
- TomatoSolanum lycopersicume1
- Organ / stage
- early anthesise0
- Outcome
- Net photosynthetic activitye0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Net photosynthetic activity, μmol CO 2 /min per dm 2 , was the greatest in the canopy during early anthesis”
e1“Tomato plants”
Claim · model-written summary
Canopy net photosynthesis declined with canopy age.
- Taxon
- TomatoSolanum lycopersicume2
- Organ / stage
- canopye0
- Outcome
- Net photosynthetic activitye1
- Direction
- steadily declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“then steadily declined as the canopy aged”
e1“Net photosynthetic activity, μmol CO 2 /min per dm 2”
e2“Tomato plants”
Claim · model-written summary
Whole-plant net photosynthesis increased after early anthesis to rapid fruit development.
- Taxon
- TomatoSolanum lycopersicume1
- Organ / stage
- early anthesis stage of developmente0
- Outcome
- Net whole plant photosynthetic activitye0
- Direction
- increased steadilye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Net whole plant photosynthetic activity, μmol CO 2 /min per plant, increased steadily after the early anthesis stage of development to a peak rate during the rapid fruit development stage”
e1“Tomato plants”
Claim · model-written summary
Whole-plant net photosynthesis declined toward mature-green and red-ripe stages.
- Taxon
- TomatoSolanum lycopersicume1
- Organ / stage
- mature-green and then finally the red-ripe stagee0
- Outcome
- Net whole plant photosynthetic activitye0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Net whole plant photosynthetic activity then declined as the plant approached the mature-green and then finally the red-ripe stage of fruit development”
e1“Tomato plants”
The same questions in other papers
light · yield · Solanum lycopersicum (tomato)Positive and negative results
84 papers in the same direction as this paper · 18 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- negative
101 papers more in this group
See all 105 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.