Cleistogamy refers to the formation of flowers that do not open, leading to self-pollination (autogamy) and seed production.
Understanding Cleistogamy
Cleistogamy is a fascinating reproductive strategy in plants. Here's a breakdown:
- Closed Flowers: The defining characteristic is that the flowers remain closed. This prevents cross-pollination.
- Self-Pollination (Autogamy): Because the flower doesn't open, it's forced to pollinate itself. Pollen from the flower fertilizes the ovules within the same flower. The reference confirms that seed production is a result of autogamy in cleistogamous flowers.
- Seed Production: Despite the flower never opening, successful pollination leads to the formation of seeds.
Cleistogamy vs. Chasmogamy
To understand cleistogamy better, it's helpful to compare it to its opposite:
| Feature | Cleistogamy (CL) | Chasmogamy (CH) |
|---|---|---|
| Flower Opening | Flowers remain closed | Flowers open |
| Pollination | Self-pollination (autogamy) | Cross-pollination possible |
| Breeding System | Autogamy | Various breeding systems |
The reference mentions chasmogamous flowers (CH) as flowers that open and can have various breeding systems.
Implications of Cleistogamy
- Ensured Seed Production: Even in unfavorable conditions where pollinators are scarce, cleistogamy ensures seed production.
- Reduced Genetic Variation: Since it relies on self-pollination, cleistogamy can lead to reduced genetic diversity within a plant population.
