Reciprocal Contact Transmission of Barley Stripe Mosaic Virus Between Wild Oats and Barley

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Abstract
Contact transmissibility of barley stripe mosaic virus (BSMV) was examined in field plots using seed-infected plants of wild oats (A. fatua), ''Herta'' barley (Hordeum distichum) and ''Conquest'' barley (H. vulgare) as virus sources and healthy plants of the same species as test material. The virus was transmitted by contact from wild oats to both ''Herta'' amd ''Conquest'' barley but in reciprocal tests was transmitted only from ''Conquest'' barley to wild oats. The frequencies of contact transmission of BSMV in these tests were lower than the frequencies of contact transmission of the virus from infected to healthy plants of either ''Herta'' or ''Conquest'' barley. There was no evidence of contact transmission of BSMV from infected to healthy wild oats. Wild oats are involved in the epidemiology of BSMV in barley.

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