Association ofEriophyes dimocarpi(Acari: Eriophyidae) with longan witches’ broom disease in Vietnam
- 13 December 2016
- journal article
- research article
- Published by Taylor & Francis Ltd in Archives of Phytopathology and Plant Protection
- Vol. 50 (1-2), 70-83
- https://doi.org/10.1080/03235408.2016.1263046
Abstract
Longan witches’ broom (LgWB) syndrome was observed in all longan-growing provinces of Vietnam. Key symptoms include: small, stunted shoots with curved, rolled up margins, deformed leaves with blisters and hairy patches on the underside; abnormal development of flower structures, flower abortion, failure to produce fruits or developing small fruits. During 2012–2015, field surveys and study of the relationship between LgWB symptoms and Eriophyes dimocarpi mites presence were carried out. Moreover, molecular analysis, electron microscopy observations, E. dimocarpi inoculations, pruning of affected spikelets and miticide experiments were performed. An average of 36.58% of longan seedlings inoculated with E. dimocarpi mites showed typical symptoms of LgWB at about 27.5 days after inoculation. The use of several pesticides in different combinations showed high efficacy on E. dimocarpi mites elimination and of symptomatology incidence reduction. These results suggest a significant association of E. dimocarpi with LgWB syndrome in Vietnam.Keywords
Funding Information
- Ministry of Science and Technology (26/G-2012/HĐ-ĐTĐL)
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