BOTANY

Detailed explanation-1: -Tungro disease viruses are transmitted from one plant to another by leafhoppers that feed on tungro-infected plants. The most efficient vector is the green leafhopper. Leafhoppers can acquire the viruses from any part of the infected plant by feeding on it, even for a short time.

Detailed explanation-2: -RICE TUNGRO BACILLIFORM VIRUS As noted above, RTBV is transmitted by leafhoppers only in the presence of RTSV. The major vector is the rice green leafhopper, Nephotettix virescens, and it can also be transmitted by some other leafhopper species such as N. nigropictus, N.

Detailed explanation-3: -Tungro virus disease is transmitted by leafhoppers, wherein the most efficient vector is the green leafhopper, Nephotettix virescens (Distant). The disease complex is associated with rice tungro baciliform virus (RTBV) and rice tungro spherical virus (RTSV).

Detailed explanation-4: -J Gen Virol. 1991 Apr; 72 ( Pt 4):757-61. doi: 10.1099/0022-1317-72-4-757.

Detailed explanation-5: -Green leafhoppers are the most common leafhoppers in rice fields and are primarily critical because they spread the viral disease tungro. Both nymphs and adults feed by extracting plant sap with their needle-shaped mouthparts.