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A hybrid grape is a grape variety that has been cultivated by crossing two different Vitis species, for example Vitis vinifera andVitis labrusca. In almost all cases, this first cross (F1 hybrid) has been backcrossed a number of times with the same, or other Vitis vinifera varieties in order to achieve the desired characteristics for a wine grape. In the last decades this has often been done to cross fungal tolerance from an American grape into a European Vitis vinifera grape. Solaris, Johanniter, Regent and Cabernet Cortis are some examples of fungus tolerant, hybrids, PIWI’s or new grape varieties (or whatever you want to call them).


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