Abstract
We evaluated the extent to which `Swenson Red' seeded grape (Vitis × spp.) responded to single and repeated GA 3 applications to induce seedless fruit development. Field studies were conducted to test the time of pre-anthesis GA 3 application (18, or 24 May or 3 June), the usefulness of postanthesis application, the optimum GA 3 concentration (0, 0.075, 0.15, or 0.3 m m ), and the method of application. The treatment dates that gave a high percentage of seedless berries with an acceptable berry count per cluster were 24 May with postanthesis application and 3 June pre-anthesis only. The optimum GA 3 concentration was 0.15 m m applied both before and after anthesis. The most seedless berries developed when pre- and postanthesis applications were used, indicating many seedless fruit developed from flowers that would have abscised. There was no difference in percent heedlessness, number of berries per cluster, or number of seeds per berry between clusters dipped or sprayed with 0.3 m m GA 3 . Chemical uame used: gibberellic acid (GA 3 ).
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Claims 4
Claim · model-written summary
Application of GA3 on 24 May with postanthesis application gave a high percentage of seedless berries in 'Swenson Red' grape.
- Taxon
- grapet0
- Material
- Swenson Redt0
- Treatment
- 24 May with postanthesis applicatione1
- Outcome
- percentage of seedless berriese1
- Direction
- highe1
Not reportedComparator
Verbatim
t0“Vines of `Swenson Red' Grape”
e1“The treatment dates that gave a high percentage of seedless berries with an acceptable berry count per cluster were 24 May with postanthesis application and 3 June pre-anthesis only”
Claim · model-written summary
The optimum GA3 concentration for 'Swenson Red' grape was 0.15 mM applied both before and after anthesis.
Verbatim
t0“Vines of `Swenson Red' Grape”
e2“The optimum GA 3 concentration was 0.15 m m applied both before and after anthesis”
e3“the optimum GA 3 concentration (0, 0.075, 0.15, or 0.3 m m )”
Claim · model-written summary
Pre- and postanthesis GA3 applications produced the most seedless berries in 'Swenson Red' grape.
- Taxon
- grapet0
- Material
- Swenson Redt0
- Treatment
- pre- and postanthesis applicationse4
- Outcome
- seedless berriese4
- Direction
- moste4
Not reportedComparator
Verbatim
t0“Vines of `Swenson Red' Grape”
e4“The most seedless berries developed when pre- and postanthesis applications were used”
Claim · model-written summary
Dipping or spraying clusters with 0.3 mM GA3 showed no difference in seedlessness, berries per cluster or seeds per berry in 'Swenson Red' grape.
Verbatim
t0“Vines of `Swenson Red' Grape”
e5“There was no difference in percent heedlessness, number of berries per cluster, or number of seeds per berry between clusters dipped or sprayed with 0.3 m m GA 3”
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See all 87 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.