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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.
About 10–15% of flowering plants are predominantly self-fertilizing. [9] 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 ...
Pollinating agents can be animals such as insects, for example beetles or butterflies; birds, and bats; water; wind; and even plants themselves. Pollinating animals travel from plant to plant carrying pollen on their bodies in a vital interaction that allows the transfer of genetic material critical to the reproductive system of most flowering ...
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 be prevented by both physical and temporal mechanisms that have evolved in response to the interactions with pollen vectors; these mechanisms make cross-pollination easier to accomplish by lowering the chances of self-pollination. For example, dichogamy, which is the temporal differentiation in the ripening of sexual organs ...
Plants fall into pollination syndromes that reflect the type of pollinator being attracted. These are characteristics such as: overall flower size, the depth and width of the corolla, the color (including patterns called nectar guides that are visible only in ultraviolet light), the scent, amount of nectar, composition of nectar, etc. [2] For example, birds visit red flowers with long, narrow ...
One particularly interesting case is the Prunus SI systems, which functions through self-recognition [15] (the cytotoxic activity of the S-RNAses is inhibited by default and selectively activated by the pollen partner SFB upon self-pollination), [where "SFB" is a term that stands "for S-haplotype-specific F-box protein", as explained ...
Self-pollination is promoted by homogamy. Homogamy is when the anthers and the stigma of a flower are being matured at the same time. [ 5 ] The action of self-pollination guides the plant to homozygosity , causing a specific gene to be received from each of the parents leading to the possession of two exact formats of that gene.
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