Virus Diseases and Disorders of Tomato

Single virus streak is caused by a strain of tomato mosaic tobamovirus which produces brown streaks on the stems and petioles, or sunken brown rings on fruit as shown here.

Photo courtesy of R. Provvidenti, NYSAES, Geneva, NY

Double virus streak is caused by a strain of tomato mosaic tobamovirus and potato virus X potexvirus

Photo courtesy of T. A. Zitter, Cornell University, Ithaca, NY

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