RICE :: VIRAL DISEASES :: RICE RAGGED STUNT DISEASE

Rice ragged stunt disease – Rice ragged stunt virus

• Formation of ragged leaves with irregular margins, vein swelling, enations on leaf veins may be formed
• Stunting of plants, delayed flowering, production of nodal branches and incomplete emergence of panicles.

Pathogen

• Spherical virus (Figivirus), 65 nm diameter, dsRNA genome

Disease Cycle

Spreads through brown planthopper, Nilaparvata lugens transmitted in a persistent manner. Multiplies in the vector, latent period of 3 to 35 days, but not transmitted congenitally