Step 1: Definition of Parthenocarpy.
Parthenocarpy refers to the phenomenon in plants where fruits develop from the ovary without the process of fertilization.
This leads to the formation of seedless fruits. Examples include banana, grapes, and citrus fruits.
Step 2: Mechanism.
- The ovary begins to grow and mature as a fruit even in the absence of pollination.
- Hormonal regulation, particularly auxins and gibberellins, often induces parthenocarpic fruit development.
Step 3: Distinguish from related processes.
- Development of embryo from female gametophyte without fertilization is called apomixis.
- Development of seed without fertilization is also related to apomictic processes.
- Development from nucellus tissue is nucellar embryony, another form of asexual seed formation.
Step 4: Conclusion.
Hence, parthenocarpy specifically refers to the development of fruit from the ovary without fertilization, resulting in seedless fruits.