Claim · model-written summary
Berry size is the most sensitive winegrape yield component to water deficits, followed by clusters per vine and berries per cluster.
- Taxon
- winegrape
Vitis viniferat0 - Treatment
- water deficitse0
- Outcome
- berry sizee0
- Direction
- most sensitivee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
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“berry size, because of a reduction in FW, is the most sensitive yield component to water deficits”
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 Sensitivity of winegrape yield components to water deficits is maximum preveraison.
- Observation Winegrape cultivars showed few differences in yield-component sensitivity to water deficits.