Symptom

• Distinct bright yellow blotches occurred on leaves crinkling was absent. Also, short, irregular yellow vein bands appear in the beginning and later coaleasced to form "Y" or concentric rings with either yellow or a green centre.
• Some yellow bands coalesced to form brilliant yellow blotches measuring 1-3 cm in diameter.
• In mildly affected plants, only a yellow vein-net involving some or all of the leaf surface was observed.
• Under field conditions, some plants show more severe symptoms after yellow blotch appearance.
• The youngest leaves were twisted, reduced in size and often curled downwards.