Mechanism that Prevents Self-pollination
Two noticeable mechanisms that prevent self-pollination are:
- Natural Way
- Chemical Way
The natural way is dichogamy. A situation in which pollen grains are shed either before or after the period during which the stigma of the same plant is receptive.
The chemical way is Chemical self-incompatibility. Basically, this depends upon the chemical substances that are already present in the plant, pollen may not grow on the stigma of the same flower that produced it. Alternatively, the pollen tube may not be able to fertilize by growing the stem normally after germination. Chemical incompatibility is usually not found in plants that have strong temporal or structural barriers to self-pollination. The formation of such a mechanism during evolution was clearly sufficient for most plant species.
Pollination
Pollination is the biological process by which pollen from the male part of the flower transfers to the female part of the same or on different flowers. Pollination results in fertilization and the production of seeds. Pollination is important for the reproduction of plants. Pollination can occur in different ways, such as through the wind, water, or animals such as bees, butterflies, and many more. However, some plant species are self-pollinating or do not require pollinators to reproduce.
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