Much of the fruit grown in the United States, including wine grapes, is grown on

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Most fruit trees, including wine grapes, are propagated through grafting, where a cutting from the desired cultivar is grafted onto a rootstock. This allows growers to combine desirable traits of the cultivar with the hardiness and disease resistance of the rootstock. Tissue culture cloning is used in some cases, but it is not common for wine grapes. Seed-grown plants would not be reliable for producing consistent quality fruit, and genetically engineered plants are not widely used in wine grape production. Wild plants would not produce the desired cultivars.

Much of the Fruit Grown in the United States, Including