self-pollination

(redirected from Selfing)
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Self-incompatibilityclick for a larger image
Fig. 279 Self-incompatibility . The process depicted results in the progeny being S 1 /S3 and S2 /S3.

self-pollination

the transfer of pollen from the stamen of a flower either to the stigma of the same flower or to another flower on the same plant. Since self-pollination leads to self-fertilization which is a form of inbreeding, many plants have developed mechanisms to prevent its occurrence. For example, plants can be DIOECIOUS, show SELF-INCOMPATIBILITY, and have differential maturation times of male and female floral organs on the same plants (for example, see ARUM LILY). Compare CROSS-POLLINATION.
References in periodicals archive ?
Alternatively, the coexistence of selfing ability and self/non-self discrimination may be a "transitional state" of an evolutionary process towards complete self-incompatibility.
We do not know which, if either, of these two hypotheses, the "low-density model" or the "transitional-state model," explains the selfing capacity/self-incompatibility in C.
Mechanism of the block to hybridization and selfing between the sympatric ascidians Ciona intestinalis and Ciona savignyi.