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ARS Home » Southeast Area » Tifton, Georgia » Crop Protection and Management Research » Research » Publications at this Location » Publication #147365
Title: OCCURRENCE OF MIXED INFECTIONS OF TOMATO SPOTTED WILT VIRUS (TSWV) AND IMPATIENS NECROTIC SPOT VIRUS (INSV) IN WEEDS AROUND TOBACCO FIELDS IN GEORGIA

Author
item MARTINEZ-OCHOA, N - UNIVERSITY OF GEORGIA
item CSINOS, A - UNIVERSITY OF GEORGIA
item Webster, Theodore
item BERTRAND, P - UNIVERSITY OF GEORGIA

Submitted to: American Phytopathological Society Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 4/1/2003
Publication Date: 10/1/2003
Citation: Martinez-Ochoa, N., Csinos, A.S., Webster, T.M., and Bertrand, P. 2003. Occurrence of mixed infections of tomato spotted wilt virus (TSWV) and impatiens necrotic spot virus (INSV) in weeds around tobacco fields in Georgia [abstract]. Phytopathology. 93:S58.

Interpretive Summary:

Technical Abstract: Weeds are likely to be the main reservoir for tospoviruses and their thrips vectors. The extent to which they spread to susceptible crops will depend on the frequency that thrips are able to infect them. A survey was conducted throughout Georgia to determine which weeds were infected with TSWV and INSV. In the winter and spring, Verbena rigida (stiff verbena), Cerastium glomeratum (sticky chickweed), Stachys floridana (Florida betony), Acanthospermum hispidum (bristly starbur), Eupatorium capillifolium (dogfennel), Gnaphalium sp. (cudweed), and Geranium carolinianum (Carolina geranium) were found with dual infections of TSWV and INSV. In the summer, Jacquemontia tamnifolia (smallflower morningglory), Wahlenbergia marginata (southern rockbell), V. rigida, A. hispidium, Mollugo verticillata (carpetweed), Raphanus raphanistrum (wild radish), Richardia scabra (Florida pusley), Conyza canadensis (horseweed), and Desmonium tortuosum (Florida beggarweed) tested positive for the mixed infections.