Sterility mosaic disease of pigeonpea is transmitted by –

Correct option is C

✅ Correct option: (c) Mites
· Sterility mosaic disease (SMD) of pigeonpea is transmitted by eriophyid mite Aceria cajani .
· The disease causes bushy plants, no flowering, and mosaic symptoms.
❌ Other options:
· (a) Nematodes – Do not transmit SMD.
· (b) Aphids – Vectors for many plant viruses, but not this one.
· (d) Fungi – Not involved in SMD transmission.