Iris Yellow Spot Virus in Onion Bulb and Seed Crops in Washington

Autor:	L. J. du Toit, Hanu R. Pappu, K. L. Druffel, G. Q. Pelter
Rok vydání:	2004
Předmět:	biology fungi food and beverages Family Bunyaviridae Plant Science Onion bulb biology.organism_classification Virus Geographic distribution medicine.anatomical_structure Plant virus Genus Tospovirus Botany medicine Allium Iris (anatomy) Agronomy and Crop Science
Zdroj:	Plant Disease. 88:222-222
ISSN:	1943-7692 0191-2917
DOI:	10.1094/pdis.2004.88.2.222a
Popis:	The geographic distribution of Iris yellow spot virus (IYSV, Genus Tospovirus, Family Bunyaviridae) in onion (Allium cepa L.) crops in the western United States has increased with the most recent report in Colorado (1,4). Furthermore, the incidence of IYSV has increased significantly in onion crops in the Treasure Valley of southern Idaho and eastern Oregon, where the disease was first detected in the United States (1,2). Surveys of onion seed crops in Washington during the past 2 years showed the presence of plants with symptoms characteristic of IYSV infection, including distinct diamond-shaped chlorotic or necrotic lesions, as well as indistinct circular to irregular, chlorotic or necrotic lesions of various sizes on the scapes of flowering plants. To date, symptomatic plants have been observed in five seed crops in Washington, at incidences ranging from References: (1) J. M. Hall et al. Plant Dis. 77:952, 1993. (2) J. W. Moyer et al. (Abstr.) Phytopathology 93(suppl.):S115, 2003. (3) G. G. Presting et al. Phytopathology 85:436, 1995. (4) H. F. Schwartz et al. Plant Dis. 86:560, 2002.
Databáze:	OpenAIRE
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