Survey of Viruses Infecting Tomato, Cucumber and Mung Bean in Tajikistan
Yuan-Li Chan | Nurali Saidov | Li-Mei Lee | Fu-Hsun Kuo | Su-Ling Shih | Lawrence Kenyon
Viral diseases are major constraints to tomato, cucumber and mung bean production in most areas where these crops are grown. To identify the viruses on the crops in Tajikistan, a field survey was conducted in 2019. Samples of cucumber, mung bean and tomato with virus-like symptoms were collected and the viruses present were diagnosed by RT-PCR and PCR. Across all the samples, a very high proportion of the samples were infected with viruses from the genera <i>Cucumovirus</i> and <i>Potyvirus</i>. <i>Cucumber mosaic virus</i> (CMV; <i>Cucumovirus</i>) was very common in the collected samples of the three crops. As for <i>Potyvirus</i>, <i>Potato virus Y</i> (PVY) was detected in the collected tomato samples, <i>Zucchini yellow mosaic virus</i> (ZYMV) was identified in the collected cucumber samples, and <i>Bean common mosaic virus</i> (BCMV) was detected in 53% of the mung bean samples. Over 68% of the collected samples were infected with two or more viruses, suggesting that mixed infections are common for the three crops. Due to the results that the most identified viruses for the three crops are transmitted by aphids, the management of aphids is extremely important for the production of tomato, cucumber and mung bean in Tajikistan.
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