Claim · model-written summary
Winegrape cultivars showed few differences in yield-component sensitivity to water deficits.
- Taxon
- winegrape
Vitis viniferat0 - Outcome
- differences among cultivarse0
- Direction
- fewe0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Preveraison Water Deficits on the Yield Components of 15 Winegrape Cultivars”
e0“with sensitivity maximum preveraison and few differences among cultivars”
Title
Effect of Preveraison Water Deficits on the Yield Components of 15 Winegrape Cultivars
Alexander D. Levin; Mark A. Matthews; Larry E. Williams American Journal of Enology and Viticulture 2020. doi:10.5344/ajev.2020.19073
Other claims from this paper (15)
- Intervention effect Early (preveraison) water deficit consistently and significantly reduced winegrape yields compared with the sustained deficit control in the first four years.
- Intervention effect Late (postveraison) water deficit did not differ from the control in winegrape yield.
- Mechanism The yield reduction under early water deficit was primarily due to a significant reduction in berry fresh weight and clusters per vine.
- Intervention effect Early water deficit significantly reduced berry fresh weight in winegrape compared with the control.
- Intervention effect Early water deficit significantly reduced clusters per vine in winegrape compared with the control.
- Intervention effect Early water deficit caused little change in berries per cluster in winegrape.
- Intervention effect Flowers per cluster and percent berry set of winegrape were not affected by the water deficit treatments.
- Observation Flowers per cluster varied significantly among winegrape cultivars.
- Observation Berries per cluster increased linearly with flowers per cluster in winegrape until saturation at about 150 berries per cluster.
- Observation Percent berry set of winegrape declined at about 250 flowers per cluster.
- Intervention effect In the fifth (carryover) year, yields of the two RDI treatments of winegrape recovered somewhat.
- Observation In the fifth year, winegrape clusters per vine showed a small but significant increase.
- Observation In the fifth year, winegrape berry fresh weight increased.
- Association Berry size is the most sensitive winegrape yield component to water deficits, followed by clusters per vine and berries per cluster.
- Association Sensitivity of winegrape yield components to water deficits is maximum preveraison.