Claim · model-written summary
Heating shaded clusters had no effect on TSMA concentrations during the cooler ripening period of 2000.
- Taxon
- Vitis vinifera
Vitis viniferat0 - Treatment
- Heating shaded clusterse5
- Outcome
- TSMA concentrationse5
- Direction
- no effecte5
- Qualifier
- during the cooler ripening period of 2000e5
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Separation of sunlight and temperature effects on the composition of Vitis vinifera cv. Merlot berries”
e5“Heating shaded clusters decreased TSMA concentrations in 1999, but had no effect during the cooler ripening period of 2000”
Title
S. E. Spayd; Julie M. Tarara; D. L. Mee; et al. American Journal of Enology and Viticulture 2002
Other claims from this paper (13)
- Intervention effect Exposure to sunlight increased berry temperature by as much as 13°C above ambient and above shaded cluster temperatures.
- Observation Growing degree days accumulated between veraison and harvest were lower in 2000 than in 1999.
- Observation Merlot TSMA concentrations were higher in 2000 than in 1999 in any given treatment.
- Intervention effect Exposure to sunlight increased TSMA concentrations regardless of temperature in both years.
- Intervention effect Cooling sun-exposed clusters increased TSMA concentrations in both 1999 and 2000.
- Intervention effect Heating shaded clusters decreased TSMA concentrations in 1999.
- Intervention effect UV light barriers did not influence cluster temperature or TSMA concentrations.
- Mechanism The decrease in TSMA concentrations of west-exposed clusters is attributed to temperature rather than UV radiation.
- Intervention effect East-exposed clusters had higher TSMA concentrations than west-exposed or shaded clusters.
- Intervention effect In 2000, sun-exposed clusters had almost 10 times greater total flavonol concentrations than shaded clusters.
- Intervention effect Exposure to solar radiation increased concentrations of the 3-glycosides of quercetin, kaempferol and myricetin.
- Intervention effect UV-light barriers significantly reduced individual and total flavonol concentrations in Merlot berries.
- Intervention effect Temperature had little to no effect on flavonol concentrations in Merlot berries.