This figure describes our 2000 core genome markers that work across grapes and muscadines (Cadle-Davidson, Lance).

(*Click on photo to view paper).*Goes to Non-Federal Site

Scenic view of ARS Geneva Farms and Seneca Lake

USDA cold hardy grapevine germplasm during winter conditions (Londo, Jason).

Elizabeth Maloney Burbine mowing in grape collection September 2019.

Variation in grapevine plant architecture caused by modifications of genes controlling plant height.

Wild grapevine (V. rupestris) is often used for rootstocks for cultivated grapes (Londo, Jason).

Young wild grape inflorescence in spring (Londo, Jason).

Grafting grapevine.  Marquette scion, experimental rootstock (Londo, Jason).

Phylloxera infected leaves (Londo, Jason).

One million powdery mildew spores are produced each day on a single leaf of a susceptible grapevine (Cadle-Davidson, Lance). 

Powdery mildew spore under a microscope, visualized with fluorescent stain (Cadle-Davidson, Lance).

By sampling a small 1-cm leaf disc for each grapevine, the disease resistance of over 300 grapevines (from a half-acre vineyard) can be tested in a small environment like a baking dish (Cadle-Davidson, Lance).

Assessing powdery mildew resistance in grapevine (Cadle-Davidson, Lance).

Robert Martens cultivating a grape nursery 2019.