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Self-pollination is a form of pollination in which pollen arrives at the stigma of a flower (in flowering plants) or at the ovule (in gymnosperms) of the same plant. The term cross-pollination is used for the opposite case, where pollen from one plant moves to a different plant.
Self-pollination may include autogamy, where pollen is transferred from anther (male part) to the stigma (female part) of the same flower; or geitonogamy, when pollen is transferred from anther of a flower to stigma of another flower on the same plant. [47] Plants adapted to self-fertilize often have similar stamen and carpel lengths.
Self-pollination is an example of autogamy that occurs in flowering plants. Self-pollination occurs when the sperm in the pollen from the stamen of a plant goes to the carpels of that same plant and fertilizes the egg cell present. Self-pollination can either be done completely autogamously or geitonogamously. In the former, the egg and sperm ...
Many flowering plants can self-pollinate, or transfer pollen between their own blossoms for seed generation and propagation, but most of these plants have relied on pollinators such as butterflies ...
Self-pollination can occur with or without the aid of animals. When animal-mediated, sexual organs will be positioned closer spatially and temporally, inverse to the strategies of dichogamy and herkogamy. However, when self-pollination is self-induced by the flower, some unique mechanisms have evolved.
Some flowers are self-pollinated and have flowers that never open or are self-pollinated before the flowers open; these flowers are called cleistogamous; many species in the genus Viola exhibit this, for example. [88] Conversely, many species of plants have ways of preventing self-pollination and hence, self-fertilization.
Hand-Pollinate Flowers. Fruiting plants like tomatoes, cucumbers, and peppers are pollinated by insects or the wind in outdoor gardens. But if you want to grow these plants indoors, ...
Chasmogamous (a) and cleistogamous (b) flowers of Viola pubescens. Arrows point to structure. Cleistogamy is a type of automatic self-pollination of certain plants that can propagate by using non-opening, self-pollinating flowers. Especially well known in peanuts, peas, and pansies, this behavior is most widespread in the grass family.
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