A Necrotic Disease of Tulip Caused by Tomato Bushy Stunt Virus

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Abstract
SUMMARY: An isolate of tomato bushy stunt virus was obtained from a tulip plant affected by a necrotic disease. The isolate differs from the type strain in virulence in some experimental hosts, and serologically is more closely related to a pelargonium leaf curl strain than to the type strain. When transmitted manually to tulip plants, both the tulip isolate and the type strain of tomato bushy stunt virus produced leaf symptoms indistinguishable from those caused by tobacco necrosis virus, but the tomato bushy stunt isolates had effects on the flowers different from those caused by tobacco necrosis virus.