Arab Journal of Plant Protection (2006) 24, 75-83

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S. Al-Chaabi, M.J. Mando, F. Ismaeil and W. Ghazaleh (2006)
[Viruses on watermelon and melon crops in Syria: Their spread, effect of grafting by using different rootstocks on viral infections, and ZYMV transmission through seeds]
Arab Journal of Plant Protection 24 (2), 75-83
Abstract: In field surveys, 303 watermelon and 68 melon samples were collected randomly from 38 fields from 4 Syrian governorates (Daraa, Homs, Hama and Idleb) during 2003 and 2004. DAS-ELISA tests revealed the presence of Zucchini yellow mosaic virus and Watermelon mosaic virus (ZYMV and WMV, genus Potyvirus, family Potyviridae) with an average incidence of 18.33 and 15.1%, respectively. Results showed that 9.24 and 15.84% of tested watermelon samples were found to be infected with ZYMV and WMV, and 58.82 and 11.77%, respectively for melon. The highest ZYMV and WMV incidence was recorded in two crops in Idleb province (53.01%), and the lowest in Daraa province (16.81%). Infection rates with ZYMV and WMV differed between grafted and non-grafted plants of the two watermelon cvs. Crimson Sweet and Crimson Tide) on Fusarium wilt resistant rootstocks, such as Strongtosa F1, Sun Hybrid F1, Sponge gourd, Bottle gourd, and Calabash. Similar results were obtained on melon cvs. Barada and Malak when grafted on Fusarium wilt resistant rootstock Dinero F1. ZYMV and WMV were not found in grafted plants of the two watermelon cvs. When grafted on "Emphasis" rootstock and in non-grafted rootstock plants. The mean rate of ZYMV spread on grafted plants of the two melon cvs., and on rootstock plants was 100.0%, whereas it was 3.50% for WMV. No ZYMV seed transmission was obtained by testing watermelon and melon cvs. seedlings, local and imported rootstocks, or by testing seedlings derived from seeds obtained from fruits of ZYMV-infected grafted plants of watermelon and melon cvs. exhibiting viral symptoms.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Arabic)
Database assignments for author(s): Faiz Ismaeil

Research topic(s) for pests/diseases/weeds:
transmission/dispersal of plant diseases

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Zucchini yellow mosaic virus Melon (Cucumis melo) Syria
Zucchini yellow mosaic virus Watermelon/colocynth (Citrullus) Syria
Watermelon mosaic virus Melon (Cucumis melo) Syria
Watermelon mosaic virus Watermelon/colocynth (Citrullus) Syria