Also found in: Dictionary, Wikipedia.
Related to Chasmogamy: cleistogamy, dichogamy


The production of a hermaphroditic floral type that opens at anthesis and may be visited by an insect vector, providing a means of cross-pollination.



pollination in flowers with an open perianth; an adaptation to cross-pollination. Many plants with chasmogamic flowers are still self-pollinators; for example, in peas and other papilionaceous plants chasmogamy may occur in the buds before the flowers open, and in Chamaenerion angustifolium chasmogamy may occur at the end of the flowering period, as a reserve method of pollination, in the event normal cross-pollination has not occurred. Self-pollination before the opening of the flower is the initial stage in the transition to cleistogamy, when the function has already changed (the plant has transferred to self-pollination), but the structure has remained as before (an open perianth).

References in periodicals archive ?
On the other hand, Sage and Isturiz (1974) and Chhabra and Sethi (1991) reported for wheat that lodicule size is genetically determined and is associated with the degree of chasmogamy.
Doll (1987) concluded that variation in the outcrossing rate was associated with variation in the degree of chasmogamy.
variation in chasmogamy and cleistogamy in Oxalis montana (Oxalidaceae).
The F1 plants were grown in the greenhouse and classified for anther extrusion and chasmogamy.
1] plants were classified for male sterility by observing anther extrusion and chasmogamy in the primary tiller of each plant.
Cleistogamy and chasmogamy in Bromus carinatus Hook.
Evolution of reproductive characteristics in Impatiens capensis (Balsaminaceae): the significance of cleistogamy and chasmogamy.