The Thompson Seedless Grape was first found in a batch of cuttings in
Sutter County, CA in the late 1800's. This variety was a natural
sport. If you are interested in the development of other seedless
varieties you mightr contact the Univirsity of Califonia at Davis.
Bill McJunkin N6FAB wmcj at syix.com
Yuba City, CA 95991