Cleistogamy

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cleistogamy

[‚klī′stäg·ə·mē]
(botany)
The production of small closed flowers that are self-pollinating and contain numerous seeds.

Cleistogamy

 

the self-pollination and self-fertilization of plants with usually small, plain, closed (cleistogamous) blossoms.

Cleistogamous flowers have little pollen. The pollen either falls onto the stigma in the closed blossom or, more rarely, germinates in the anthers, pierces their walls, and grows into the pistil. Cleistogamy is observed in plants of various families, including Arachis, many violets, impatiens, chickweed, toadflax, wood sorrel, and barley. Under favorable conditions cross-pollination is also sometimes observed in typically cleistogamous plants (for example, in some violets).

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Self-compatibility may be responsible for a higher production of fruit in natural conditions caused by the process of automatic self-pollination in B.
As with automatic self-pollination, apomixis can also promote fruit set when there is a low rate of natural pollination (BAWA; WEBB, 1984; FAEGRI; VAN DER PIJL, 1979).
The level of automatic self-pollination, cross-compatibility, rate of pistil maturation, and total number of flowers showed no change associated with the change in autogamy (Table 3).

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