Question

Tikka disease of groundnut is caused by which pathogen?

• A. Xanthomonas citri
• B. Tungrovirus
• C. Pyricularia oryzae
• D. Cercospora personatum

Answer 1

The correct option is D

Cercospora personatum

The correct option is D.

Explanation of correct option:

1. Tikka disease of groundnuts is caused by the pathogenic fungus Cercospora personatum and Cercospora arachidicola.
2. It is also known as the leaf-spot disease.

Explanation of incorrect options:

Option A:

1. Xanthomonas citri is a bacteria that causes citrus canker in citrus fruits.
2. Symptoms include rounded-to-irregular sunken, discolored, flattened, cracked, swollen, or dead areas on the stem (cane), twigs, limbs, or trunk.

Option B:

1. Tungrovirus is a virus that causes viral disease in monocots.
2. It leads to stunted growth and yellowing or discoloration of leaves.

Option C:

1. Pyricularia oryzae is an ascomycetous pathogen that causes rice blast disease.
2. Blast symptoms appear as elliptical spots on leaves with lighter centers and reddish edges.

Final answer: Tikka disease of groundnuts is caused by Cercospora personatum.