Abstract
Abstract Nonfruiting ‘Thompson Seedless’ grapevine rootings were grown for 30-day periods in phytotron rooms at variable day temp (6:00 AM to 6:00 PM) from 20 to 40°C, in combination with high light (HL,>2,000 ft-c) and low light (LL, <400 ft-c). Night temp in all treatments was 15°C. Maximum total vine growth and net assimilation rate occurred at 30°C under HL and at 20°C under LL. Gain in dry matter per vine was 3- to 18-fold greater under HL than under LL. The level of total carbohydrates (sugars plus starch) in roots of plants grown under HL was also maximal at 30°C. The concn of total carbohydrates in trunk tissues however, varied little with temp from 20 to 35°C, but was significantly (P<0.01) reduced at 40°C. Low light intensity markedly reduced (P<0.01) the levels of sugars and starch in root and trunk tissues compared to the levels in vines grown at HL, regardless of temp.
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Claims 7
Claim · model-written summary
Under high light, maximum total vine growth and net assimilation rate occurred at 30°C.
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum total vine growth and net assimilation rate occurred at 30°C under HL and at 20°C under LL.”
t0“Grapevines”
Claim · model-written summary
Under low light, maximum total vine growth and net assimilation rate occurred at 20°C.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum total vine growth and net assimilation rate occurred at 30°C under HL and at 20°C under LL.”
t0“Grapevines”
Claim · model-written summary
Dry matter gain per vine was 3- to 18-fold greater under high than low light.
- Treatment
- HLe0
- Outcome
- Gain in dry matter per vinee0
- Direction
- greatere0
- Value
- 3- to 18-folde0
- Comparator
- LLe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gain in dry matter per vine was 3- to 18-fold greater under HL than under LL.”
t0“Grapevines”
Claim · model-written summary
Root total carbohydrates under high light were maximal at 30°C.
- Organ / stage
- rootse0
- Treatment
- HLe0
- Outcome
- level of total carbohydratese0
- Direction
- maximale0
- Qualifier
- at 30°Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The level of total carbohydrates (sugars plus starch) in roots of plants grown under HL was also maximal at 30°C.”
t0“Grapevines”
Claim · model-written summary
Trunk total carbohydrate concentration varied little from 20 to 35°C.
- Organ / stage
- trunk tissuese0
- Treatment
- temp from 20 to 35°Ce0
- Outcome
- concn of total carbohydratese0
- Direction
- varied littlee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concn of total carbohydrates in trunk tissues however, varied little with temp from 20 to 35°C, but was significantly (P<0.01) reduced at 40°C.”
t0“Grapevines”
Claim · model-written summary
Trunk total carbohydrate concentration was significantly reduced at 40°C.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concn of total carbohydrates in trunk tissues however, varied little with temp from 20 to 35°C, but was significantly (P<0.01) reduced at 40°C.”
t0“Grapevines”
Claim · model-written summary
Low light significantly reduced sugars and starch in root and trunk tissues relative to high light regardless of temperature.
- Organ / stage
- root and trunk tissuese0
- Treatment
- Low light intensitye0
- Outcome
- levels of sugars and starche0
- Direction
- reducede0
- Qualifier
- regardless of tempe0
- Comparator
- HLe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low light intensity markedly reduced (P<0.01) the levels of sugars and starch in root and trunk tissues compared to the levels in vines grown at HL, regardless of temp.”
t0“Grapevines”
The same questions in other papers
light · quality: sugar starch · VitisPositive and negative results
1 paper in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 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.