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Sources of resistance to Watermelon Chlorotic Stunt Virus in melon

Watermelon Chlorotic Stunt Virus (WmCSV) is a bipartite geminivirus residing in the genus Begomovirus (family Geminiviridae) and is whitefly transmitted (Bemisia tabaci). WmCSV infects members of the Cucurbitaceae, and represents a considerable threat to melon and watermelon crops in Sudan, Yemen, a...

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Bibliographic Details
Published in:Plant breeding 2007-08, Vol.126 (4), p.422-427
Main Authors: Yousif, M.T, Kheyr-Pour, A, Gronenborn, B, Pitrat, M, Dogimont, C
Format: Article
Language:English
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Summary:Watermelon Chlorotic Stunt Virus (WmCSV) is a bipartite geminivirus residing in the genus Begomovirus (family Geminiviridae) and is whitefly transmitted (Bemisia tabaci). WmCSV infects members of the Cucurbitaceae, and represents a considerable threat to melon and watermelon crops in Sudan, Yemen, and Iran. One hundred twenty-eight melon accessions, mostly collected from Sudan, were screened in the open-field in Sudan under severe whitefly inoculation pressure in order to identify sources of resistance to WmCSV. One WmCSV resistant line HSD 2445-005 selected from this first screening along with 22 new melon accessions were agro-inoculated with an infectious Sudanese clone of WmCSV. Ten accessions exhibited resistance to WmCSV infection upon agro-inoculation. Six of them were confirmed to have complete resistance to WmCSV through graft-inoculation as well as multiple field trials in Sudan. These lines include the Sudanese accession HSD 2445-005, the South African accession PI 282448, and three Indian accessions: 90625, PI 124112, and PI 414723. Resistant plants exhibited no disease symptoms, and virus DNA could not be detected by hybridization with a WmCSV-specific probe.
ISSN:0179-9541
1439-0523
DOI:10.1111/j.1439-0523.2007.01366.x