Question

What is self-sterility?

Answer 1

Self-sterility:

1. Self-sterility is a genetic mechanism against self-pollination.
2. It is also known as self-incompatibility.
3. The germination of the pollen tube in the pistil or the germination of pollen grains is suppressed, which prevents the fertilization of the ovules by the pollen from the same flower.
4. It is a type of negative interaction between pollen and the pistil.
5. This mechanism could be physiological or morphological.
6. This mechanism promotes cross-pollination.