What are the symptoms of viral disease in turnip rape and brown mustard (Indian mustard)?

(Agricultural Wealth Network) Turnip rape and brown mustard (Indian mustard) mainly develop chlorosis along both sides of the leaf veins, with leaves showing a mosaic of alternating yellow and green, and translucent veins or a translucent vein network. In severe cases, the leaves become wrinkled, curled or deformed, and diseased plants are markedly stunted, mostly dying before bolting or at bolting. Plants with mild infection or late onset may still bolt, but the flowering stems are curved or stunted, the flowers and pods are densely clustered, the siliques are thin and shriveled, and maturity occurs earlier.