Kwararru daga reshen Pyatigorsk na Cibiyar Kasafin Kudi ta Tarayya "VNIIKR" (Dukkanin Cibiyar Kula da Tsirrai na Rasha) yayin binciken dakin gwaje-gwaje sun gano cutar keɓe masu haɗari - dankalin turawa spindle tuber viroid (dankali spindle tuber viroid) a cikin samfurori (samfurori) na samfuran da aka tsara. (dankalin iri).
An tura bayanai game da gano abubuwan keɓancewa ga Hukumar Kula da Yankin Rosselkhoznadzor don Yankin Stavropol da Jamhuriyar Karachay-Cherkess don ɗaukar matakan mayar da martani na doka.
Viroids ba sa samar da barbashi masu zaman kansu. Tsawon RNA 359 nucleotides ne kawai. Ya kasance a cikin tsire-tsire da abin ya shafa kuma ana yin su ta hanyar hanyoyin biosynthetic na shuka mai watsa shiri. Yawan amfanin ƙasa, dangane da nau'in pathogen da nau'in dankalin turawa, an rage shi da 30-90%.
Ana bayyana cutar ta hanyar hana ci gaban shuka da ci gaba, shredding ganye, curvature na lobes da mai tushe, nadawa na lobes tare da midrib, waviness na gefuna, canza launi (grayish-kore ko yellowish tint, wani lokacin anthocyanin). canza launin gefen baya, gefuna da tukwici).
The tubers ne elongated, pear-dimbin yawa ko dumbbell-dimbin yawa, tare da ƙara yawan idanu, wani lokacin rashin daidaituwa launi, tare da launin ruwan kasa spots a idanu. Tushen suna da rauni kuma galibi suna samar da nodules matasa maimakon harbe-harbe na yau da kullun.
Ciwon yakan ci gaba a cikin bututun da basu da lafiya kuma ana kamuwa da su ta hanyar tuntuɓar lokacin yankewa da dasa shuki, lokacin sarrafa injina da kuma nau'ikan kwari da yawa, musamman kwari da aphids.