head smut
Học thuậtThân thiện
Definition
- Noun:
- A specific plant disease: "head smut" is the common name for a fungal disease, caused by a smut fungus, that primarily infects the seed heads (the flowering and grain-producing parts) of cereal crops like corn (maize) and sorghum. The disease is characterized by the fungus replacing the kernels with masses of dark, powdery spores, often enclosed within a membrane.
Usage Examples
- Noun:
- The farmer identified head smut in his sorghum field by the black, powdery masses replacing the grains.
- Crop rotation is a recommended practice to help control head smut.
- The distinguishing feature of head smut is that the spore mass is initially covered by a thin layer of plant tissue.
Advanced Usage
- Scientific Context: In phytopathology (plant disease science), "head smut" specifically refers to diseases caused by fungi in the genus , such as .
- The research focused on the life cycle of the pathogen responsible for head smut.
Variants and Related Words
- Smut (n): A broader category of plant diseases caused by fungi of the order Ustilaginales, which produce sooty, spore-filled masses. "Head smut" is a type of smut disease.
- Common smut and head smut are both significant diseases of corn.
- Covered Smut (n): A synonym for "head smut," emphasizing that the spore mass is enclosed. This term is often used interchangeably.
- The symptoms of covered smut are less obvious until the head matures.
Synonyms
- Covered smut: The most direct synonym, highlighting the diagnostic characteristic.
- Seed head smut: A more descriptive variant specifying the plant part affected.
Related Terms (Not Phrasal Verbs)
- Pathogen: The disease-causing organism (the smut fungus).
- Sorghum head smut: A term specifying the host crop (sorghum).
- Corn head smut: A term specifying the host crop (corn/maize).
Noun
- smut fungus attacking heads of corn or sorghum and causing a covered smut