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IDENTIFICATION OF SOME APHIDS VECTORS OF CITRUS TRISTEZA VIRUS IN CITRUS GROVES OF SYRIA

Titre
IDENTIFICATION OF SOME APHIDS VECTORS OF CITRUS TRISTEZA VIRUS IN CITRUS GROVES OF SYRIA
Résumé
During the period from March to July 2006, surveys were carried out to determine the occurrence of aphids vectors of Citrus Tristeza Virus in the coastal region of Syria. The experiment was conducted in 18 commercial fields in both Lattakia and Tartous Districts, in addition to two budwood sources in Lattakia. Fifteen trees were randomly selected in each grove across the diagonals of the field and two infested shoots per tree (when present) were collected every three weeks, from different tree heights and orientation. In this study, four aphid species were found. The green citrus aphid, A. spiraecola (Patch), was the dominant species in the investigated areas, representing 50.0% of the total aphid population, followed by the cotton aphid, A. gossypii Glover (27.3%), T. aurantii (Boyer de Fonscolombe), the black citrus aphid (20.3%), whereas the black bean aphid Aphis fabae (Scopoli) represented only 2.3% of the population. The recent presence of citrus tristeza virus in the Syrian cit5riculture, and its easy dissemination by aphid vectors (as the cotton aphid is one of the most active vectors in the Mediterranean region which caused CTV- outbreaks in some countries such as Spain) highlighting the importance of continuing vector monitoring and rapid eradication specially in the mother tree fields, thus preventing the establishment of the brown citrus aphid, T. citricidus (Kirkaldy), the most efficient vector for CTV which was first reported close to the Mediterranean basin in the northern part of Portugal and Spain, and could be a potential threat to citriculture in the Mediterranean basin.
Plus
Année
2009
Publié en
Arab Journal of Plant Protection. Vol 27, Special Issue, V625.
24/07/13 - Introduit par: Raied Abou kubaa
Quantitative & qualitative enhancement of crop products
Thème principal: Quantitative & qualitative enhancement of crop products
Sous-catégorie Pre-harvesting