Question

Red rot of sugarcane is produced by

• A. Phytophthora
• B. Cercospora
• C. Albugo
• D. Colletotrichum

Answer 1

The correct option is D

Colletotrichum

The correct option is D.

Explanation of correct option:

1. Red rot is a disease of sugarcane.
2. It is caused by the fungus Colletotrichum falcatum.
3. It causes red and white patches on the cane and gives then alcoholic odor when the cane is split open.

Explanation of incorrect options:

Option A:

1. Phytophthora is plant-damaging oomycetes.
2. Phytophthora spp mostly affects dicotyledons.

Option B:

1. Cercospora belongs to the genus of ascomycete fungi.
2. Cercospora abelmoschi causes okra leaf spots, also known as black mold.

Option C:

1. Albugo belongs to the genus of plant-parasitic oomycetes.
2. They cause a disease known as a white blister or white rust on numerous crucifers.

Final answer: Red rot of sugar cane is produced by Colletotrichum.