Grape Breeding and Enology

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Welcome to the Grape Breeding and Enology project website!

Located at the University of Minnesota-Twin Cities, we conduct research in the Department of Horticultural Science and at the Horticultural Research Center.  Our focus is on grapevine cultivar development which includes: wine grapes, table grape varieties, and ornamentals that survive and thrive the cold-climate conditions.  We also focus on understanding the mechanisms of disease and pest resistance so that we incorporate these traits as a way to improve sustainability for Minnesota growers.  In addition to developing grapes, we focus on developing and teaching enology best practices for cold-hardy grapes.

Clink! Sip + Savor Wine Market

Explore locally produced Wines and Food at clink!  UMN Grape Breeding and Enology staff will have a booth and will present a short talk at 4pm!

Clink Sip & Savor WIne Market 2018

Bud Survival Data 2017-2018

Preliminary bud survival data has been collected and presented for key UMN and other cold-hardy varieties. 

Potential bunch stem necrosis in Minnesota grapevines

Annie Klodd, Matt Clark, and John Thull

We have heard multiple reports of severe cluster necrosis, particularly on Marquette grapes in 2016 and 2017 in Minnesota, including here at the U of MN Horticultural Research Center. In some vineyards, it has caused substantial or complete crop loss.

Growers report that the clusters rapidly shrivel and die during veraison, while the plants and clusters appear healthy up until this point. It does not appear to be caused by black rot, mildew or botrytis. The rachis on the clusters desiccate first, followed by the berries.

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