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Hermaphrodite flower

The cultivated grapevine is mostly monoecious with hermaphrodite, i.e. bisexual, flowers. It is self-pollinating, but can also be cross-pollinated. Wild grapevines are mostly dioecious, i.e. there are plants with exclusively male or exclusively female flowers, so that so-called self-pollination (self-fertilisation) is excluded. In monoecious plants, both sexes occur on one plant. The flowers can be of separate sexes, so that male and female flowers occur on the same plant but in separate inflorescences, or they are hermaphroditic hermaphrodites, in which male and female sexual organs are united in one flower. The vine is an angiospermous plant. This means that the flower bud is covered with the perianthium, which is opened or shed during the flowering period to allow pollination (and immediately following fertilisation). As a rule, cultivated grape varieties are bisexual. However, there are also unisexual (female) varieties with exclusively female flower organs.

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