Name for the transfer of pollen grains of one flower to the scar of a second flower on another plant (cross-pollination), causing cross-fertilization (xenogamy). In the case of the grapevine this may be a neighboring vine of the same but also a vine of any other grape variety from a neighboring vineyard (see under blossom ). In contrast, self-fertilization is within one hermaphroditic flower (Autogamy) or between two different flowers of the same plant (Neophytes = Geitonogamie). Mostly done in cultivated vines one selfing (Self-fertilization) within the hermaphrodite. At purely female grape varieties must have a cross-fertilization by near or in the mixed sentence planted zwitterblütige varieties are forced. at new varieties A targeted or intentional cross-pollination with the desired partner takes place, so to speak.