Rugose mosaic of potato is caused by

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(B) The rugose mosaic disease of potato is primarily caused by the Potato virus $Y$ $(PVY)$.While Potato virus $X$ $(PVX)$ can also cause mosaic sympt

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Potato virus $-Y$

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(B) The rugose mosaic disease of potato is primarily caused by the Potato virus $Y$ $(PVY)$.While Potato virus $X$ $(PVX)$ can also cause mosaic symptoms,the specific 'rugose' (wrinkled) mosaic condition is characteristically associated with $PVY$ infection,often in synergistic combination with $PVX$ in field conditions.However,in standard biological contexts,$PVY$ is the primary causative agent for the rugose mosaic symptom.

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