self-pollination

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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 ?
In 1993, Ledhetter started his work to breed a desirable self-pollinating almond.
They both have annual seed cycles with self-pollinating flowers that rarely cross-pollinate.
Thus, cleistogamous plants should have a low P:O ratio and self-pollinating plants should have a lower P:O ratio than cross pollinating plants; in this way the P:O ratio is correlated with the reproductive system of the plant (Cruden, 1977).
To generate variation in self-pollinated plants, the plants must be hybridized by manipulating normally self-pollinating plant flowers to avoid self-fertilization.
Over time, the breeding of tomatoes developed shorter flower styles, when in California in 1965 the fully self-pollinating plant was developed, featuring a full enclosure of the pistil by the anthers - an assurance of self-pollination.
However, such high levels of polymorphism are not expected for a principally self-pollinating species.
He and his coworkers dismissed that conclusion by isolating the self-pollinating plants.
Since the plant is an obligate self-pollinating plant, one can avoid spreading of genetically engineered plants to the environment.
The species is thought to be self-pollinating throughout its Tasmanian range because some flowers do not fully open.
When an exact duplicate of a plant is desired, especially if it is not self-pollinating, asexual propagation methods must be used.
When a fruit tree is self-fruitful, it means it is self-pollinating and that the seeds it produces will grow into trees very much like itself.
If the technology is widely licensed, it could be a boon to the seed industry - especially for companies marketing self-pollinating seeds such as wheat, rice, cotton, soybeans, oats and sorghum.