Does self-incompatibility impose any restrictions on autogamy? Give reasons and suggest the method of pollination in such plants.
Self- incompatibility is the condition in which pollen from the same plant cannot pollinate the flower. Self-incompatibility restricts autogamy by preventing a flower's pollen from fertilizing its ovules through genetic or biochemical barriers controlled by S-genes. This mechanism promotes cross-pollination (xenogamy) and prevents inbreeding, ensuring genetic diversity. Such plants rely on external pollinating agents like wind, water, or animals for successful reproduction.