On diagnosis of Globodera genus nematodes connected with regulated products
https://doi.org/10.69536/t3049-1543-4328-e
Abstract
Cyst nematodes of the genus Globodera colonize root plants. Two species – golden potato nematode Globodera rostochiensis and pale potato cyst nematode Globodera pallida – are quarantine pests for many countries, including the Russian Federation. The material on host plants of Globodera nematodes has been analyzed. Eight nematode species of this genus colonize Solanaceae family plants, except for potato. Besides, there is a large Globodera nematode group colonizing Asteraceae. The work also presents the results of geographical distribution of Globodera, as well as possible pathways. In laboratory studies of soil samples and regulated products, there are cases of detection of non-quarantine species of Globodera cyst nematodes, as well as mixed populations of quarantine and non-quarantine species. Proper diagnosis is important to establish the phytosanitary status of products. Identification by morphological method of closely related species of the genus Globodera can be difficult due to the similarity of some characteristics of the nematode structure. The article presents a differential diagnosis that makes it possible to separate quarantine species from non-quarantine ones by morphological features. Descriptions are given of three non-quarantine species that periodically occurred in laboratory studies. Since the quarantine species Globodera rostochiensis and Globodera pallida can spread not only with potatoes, but also with soil particles on the rhizomes and bulbs of flower plants and other planting material, the article provides a complete list of products (indicating the Commodity Classification of Foreign Trade Activity codes) that are subject to laboratory research. When identifying nematodes to a species, a clear approach to the concepts denoted by individual terms and the uniformity of measurements are very important. Discrepancies in the terminology and measurements of morphometric features are determined, which are important to consider in the diagnosis.
About the Authors
E. A. Khudyakova
FGBU “All-Russian Plant Quarantine Center” (FGBU “VNIIKR”)
Russian Federation
Russian Federation
Elena Khudyakova, Senior Researcher, Head of Helminthology Laboratory of FGBU “VNIIKR” Testing Laboratory Center
Bykovo, Ramenskoye, Moscow Oblast
S. V. Sudarikova
FGBU “All-Russian Plant Quarantine Center” (FGBU “VNIIKR”)
Russian Federation
Russian Federation
Stella Sudarikova, Senior Researcher, Helminthology Laboratory of FGBU “VNIIKR” Testing Laboratory Center
Bykovo, Ramenskoye, Moscow Oblast
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For citations:
Khudyakova E.A., Sudarikova S.V. On diagnosis of Globodera genus nematodes connected with regulated products. Plant Health and Quarantine. 2022;(3):17-25. https://doi.org/10.69536/t3049-1543-4328-e
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