Complex sentence: Cultivar resistance to the virus is the most practical strategy to control the disease and evidence shows it is likely that the resistance prevents the systemic movement to the foliage from the roots, although this resistance will not prevent any replication or movement of cells to roots.
Split into simpler sentences: Cultivar resistance to the virus is the most practical strategy to control the disease. Evidence shows it is likely that the resistance prevents the systemic movement to the foliage from the roots, although this resistance will not prevent any replication or movement of cells to roots.