Abstract
Grapevines (Vitis vinifera L., cultivars Muscat Gordo Blanco and Sultana) were grown in controlled-environment growth cabinets. At intervals, up to 13 weeks after bud burst, shoots were harvested, and both the number and fresh weight of leaf primordia, in buds at certain nodes, were measured. Bud development, in terms of leaf primordia, was depressed, with reduction in both light intensity and temperature. This parallels effects on initiation of bunch primordia. Bud development outdoors was similar to that in growth cabinets under the best conditions. At the time a node was separating macroscopically below the shoot apex, its subtended bud consisted of an apical dome and two leaf primordia. It was known that temperature had its greatest effect on subsequent fruitfulness of a bud at this stage. About 3 weeks after the shoot apex had grown away from a node, the bud situated at that node consisted of an apical dome and approximately six leaf primordia. It is at this stage that the fruitfulness of a bud is known to be no longer susceptible to temperature. It is concluded that temperature influences fruitfulness of grapevine buds by effects on tissues which exist prior to, and which are subsequently situated basal to, a fruit primordium.
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Claims 6
Claim · model-written summary
Reduced light intensity depressed grapevine bud development, reducing leaf primordia number and fresh weight.
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bud development, in terms of leaf primordia, was depressed, with reduction in both light intensity and temperature.”
t0“Grapevines”
Claim · model-written summary
Reduced temperature depressed grapevine bud development in terms of leaf primordia.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bud development, in terms of leaf primordia, was depressed, with reduction in both light intensity and temperature.”
t0“Grapevines”
Claim · model-written summary
Outdoor bud development was similar to development in growth cabinets under the best conditions.
- Outcome
- Bud developmente0
- Direction
- similare0
- Comparator
- growth cabinets under the best conditionse0
- Setting
- outdoorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bud development outdoors was similar to that in growth cabinets under the best conditions.”
t0“Grapevines”
Claim · model-written summary
At macroscopic separation of a node below the shoot apex, its bud had an apical dome and two leaf primordia.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the time a node was separating macroscopically below the shoot apex, its subtended bud consisted of an apical dome and two leaf primordia.”
t0“Grapevines”
Claim · model-written summary
About three weeks after shoot apex departure, the bud had an apical dome and approximately six leaf primordia.
- Organ / stage
- bude0
- Outcome
- an apical dome and approximately six leaf primordiae0
- Value
- approximately six leaf primordiae0
- Qualifier
- About 3 weeks after the shoot apex had grown away from a nodee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“About 3 weeks after the shoot apex had grown away from a node, the bud situated at that node consisted of an apical dome and approximately six leaf primordia.”
t0“Grapevines”
Claim · model-written summary
The authors conclude temperature influences grapevine bud fruitfulness through tissues present before and basal to the fruit primordium.
- Treatment
- temperaturee0
- Outcome
- fruitfulness of grapevine budse0
- Qualifier
- tissues which exist prior to, and which are subsequently situated basal to, a fruit primordiume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is concluded that temperature influences fruitfulness of grapevine buds by effects on tissues which exist prior to, and which are subsequently situated basal to, a fruit primordium.”
The same questions in other papers
light · growth · VitisPositive and negative results
7 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
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See all 23 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.