The time lapse movie of cabernet sauvignon grape berry ripening takes place from fruit set until 11 weeks past veraison, a time frame spanning 150 days . The plants were grown under a 16hr photoperiod and what you see are the photographs taken during light hours at one hour intervals. Reduced to less than a minute of video the time lapse movie moves through several days’ development every second. As you watch the video take note of the following:
- the diurnal cycle reflected in the leaf movement
- the twisting of tendrils searching to find something to grab and their subsequent senescence
- the heterogeneity of the date of veraison within the cluster
Finally, explore specific parts of the video by using the time cursor in the player to move the movie forward and backward. A large full resolution video is available by contacting Gregory Gambetta at firstname.lastname@example.org.
© Produced and Created by Gregory Gambetta and Jon Schadt, University of California at Davis, Department of Viticulture and Enology
Please be patient as the movie takes time to load (about 1-2 min.)
Berry shrivel and bunch stem necrosis are two disorders that afflict vines in the Napa/Sonoma viticultural areas, and symptomatic fruit is usually dropped in the vineyard prior to harvest. Both disorders involve the visible shriveling of the berries during ripening. Click here for more info...
Click here to download Greg Gambetta's recent presentation at the GWSS Workgroup meeting as part of the Pest Management Coordinating Conference (PMCC) in Sacramento
Click here to download and explore a PDF of Hiroshi Wada's ASEV poster presentation entitled:
Fruit Ripening in Vitis vinifera: Apoplastic Solute Accumulation Accounts for Pre-veraison Turgor Loss in Berries.
Veraison has been characterized by berry softening, sugar accumulation and a renewal of cell enlargement and berry growth. Veraison also involves loss of mesocarp cell turgor pressure. We hypothesized that this loss was associated with an accumulation of apoplastic solutes in mesocarp tissue prior to veraison. Read More!