self-sterility
Definition
self-sterility (noun) - In botany (and biology): The property or condition of a plant or organism being unable to fertilize itself or produce offspring through self-pollination or self-fertilization. It refers to a biological mechanism that prevents an individual from reproducing with itself, often to promote genetic diversity.
Usage Examples
- (Many plants cannot self-fertilize, which forces them to rely on pollen from other plants.)
- (The inability of a plant to self-pollinate makes it harder to grow uniform crops.)
- (Scientists examined the genes that prevent self-fertilization in these plants.)
Advanced Usage
- "Self-sterility mechanism": The specific biological process (e.g., genetic incompatibility, timing of pollen release) that prevents self-fertilization.
- The self-sterility mechanism in petunias involves a protein that blocks pollen tube growth. (A specific molecular action stops the plant's own pollen from reaching the ovules.)
- "Self-sterility vs. self-incompatibility": In botanical contexts, self-sterility is often used interchangeably with self-incompatibility, though the latter is a more precise genetic term.
- While self-sterility describes the observed outcome, self-incompatibility refers to the genetic system causing it. (One is the result, the other the cause.)
Variants and Related Words
- Self-sterile (adjective): Describing an organism that cannot self-fertilize.
- The self-sterile apple tree requires a nearby pollinator. (The tree cannot produce fruit from its own pollen.)
- Self-fertility (noun): The opposite condition — the ability to self-pollinate or self-fertilize.
- Some plants have high self-fertility, allowing them to reproduce alone. (They can produce offspring without a partner.)
Synonyms
- Self-incompatibility: A specific genetic mechanism preventing self-fertilization (often used in plant biology).
- Autosterility: A less common term for the inability to self-reproduce.
Related Idioms and Phrases
- (Self-sterility is a specialized scientific word, not used in everyday speech.)