Grape Variety: UCD GRN-2

Variety Name	UCD GRN-2
Common Synonyms	9363-16
All Synonyms	9363-16, Walker 9363-16
Countries of Origin	USA
Species	It includes V. rufotomentosa, V. champinii
Breeder	Dr. Andy Walker
Institution	University of California, Davis
Year Released	2008
Status of Ownership	Proprietary to UC Regents
Pedigree	Several species, including Vitis rufotomentosa, Vitis champinii, Vitis riparia
Uses	Rootstock
Comments	GRN-2™ acquires its nematodi resistance from V. rufotomentosa and V. champinii 'Dog Ridge'. It roots and grafts easily. This cultivar has staminate flowers, long shoots and internodes and few laterals. It produces roots with relatively shallow rooting angles. It is susceptible to citrus and ring nematodes but has excellent resistance to root-knot and dagger nematodes.

UCD GRN-2 Selections

	UCD GRN-2 [01.1] (proprietary)
Registration Status	Registered
Source	Department of Viticulture & Enology, University of California, Davis
Proprietary	Proprietary- cannot be distributed without written permission from owner.
Comments	This selection was developed by University of California, Davis, Viticulture Professor Andy Walker and was released in 2008. It was formerly known as 9363-16 (Walker 9363-16). For a complete explanation of the selections in this series, see the article entitled 'Walker Nematode-resistant Rootstock Releases' in the October 2008 FPS Grape Program Newsletter at http://fps.ucdavis.edu/, in the Publications section. The original material underwent microshoot tip tissue culture therapy at FPS in 2010 in order to qualify for the Russell Ranch Foundation Vineyard, where it was planted in 2012 as UCD GRN-2™ FPS 01.1.