A grape is the fruit
of a vine in the family Vitaceae. It is commonly used for making
grape juice, jelly, wine and raisins, or can be eaten raw. Grapes
constitute approximately 50% of all fruit grown in the world.
Many species of grape exist including: Vitis vinifera, the European
winemaking grapes Vitis labrusca, the North American table and
grape juice grapes, sometimes used for wine Vitis riparia, a wild
grape of North America, sometimes used for winemaking Vitis rotundifolia,
the muscadines, used for jelly and sometimes wine Vitis aestivalis,
the variety Norton is used for winemaking Vitis lincecumii (also
called Vitis aestivalis var. lincecumii), Vitis berlandieri (also
called Vitis cinerea var. helleri), Vitis cinerea, Vitis rupestris
are used for making hybrid wine grapes and for pest-resistant
rootstocks. Hybrids also exist, primarily crosses of V. vinifera
with one or more varieties of V. labrusca, V. riparia or V. aestivalis.
Hybrids tend to be less susceptible to frost and disease (notably
phylloxera), but their wine has little of the characteristic "foxy"
odor of labrusca. Currently, a large fraction of the grape crop
goes to producing grape juice to be used as a sweetener for fruits
canned 'with no added sugar' and '100% natural'.