Self-crossing

Synonym for ; see there.

Term for the self-pollination of a plant with its own pollen during flowering, which subsequently leads to self-fertilisation (the two terms are often used interchangeably as synonyms). The cultivated vine usually has hermaphrodite flowers. The male and female organs are united in one flower bud. This fact is the main reason why cultivated vines are largely self-fertilised.

The process within the hermaphrodite flower (autogamous) or between two flowers of the same clusters (later grapes) is called self-fertilisation in the narrower sense. Between flowers of two shoots of the same vine is called self-fertilisation in the broader sense (geitonogamous). Around 99% of cultivated vines are hermaphrodite plants. Here the plant is not at all dependent on external help (wind, bees). The hermaphrodite flowers have an extremely high degree of self-fertilisation of 99%, so that bees or wind are of no importance.

Blüte - Graphik

The picture on the left shows a closed vine flower, the picture in the centre shows the shedding of the cap before pollination and the picture on the right shows the flower bud in full bloom shortly before...

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Self-crossing

self-pollination

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