Ọkachamara nke Pyatigorsk alaka nke Federal State Budgetary Institution VNIIKR (All-Russian Center for Plant kwarantaini) n'oge laabu nnyocha hụrụ na sample (sample) nke na-achịkwa ngwaahịa (mkpụrụ poteto) a dị ize ndụ kwarantaini ọrịa - nduku spindle tuber viroid.
E zigara ozi gbasara njirimara nke ihe iche iche na mpaghara nchịkwa nke Rosselkhoznadzor maka Stavropol Territory na Karachay-Cherkess Republic maka nzaghachi iwu.
Viroid anaghị etolite irighiri ihe nọọrọ onwe ya. Ọ bụ naanị nucleotide 359 nke RNA. Ọ dị na osisi emetụtara ma na-emegharị ya site na usoro biosynthetic nke osisi ndị ọbịa. Mkpụrụ osisi tuber, dabere na ụdị nje pathogen na ụdị nduku, na-ebelata 30-90%.
A na-egosipụta ọrịa ahụ site na mkpochapụ nke uto na mmepe nke osisi, ngwepịa akwụkwọ, curvature nke lobes na mkpanaka ha, mpịachi nke lobes n'akụkụ midrib, waviness nke n'ọnụ ha, mgbanwe agba (agba ntụ-green ma ọ bụ odo odo, mgbe ụfọdụ anthocyanin coloration. nke azụ azụ, n'ọnụ na ndụmọdụ).
Tubers bụ elongated, ụdị ube ma ọ bụ dumbbell, nwere ọnụ ọgụgụ anya na-abawanye ụba, mgbe ụfọdụ na-achakarị agba, nwere ntụpọ aja aja na anya. Ome ndị ahụ adịghị ike, mgbe mgbe, kama ome ndị nkịtị, ha na-etolite nodules na-eto eto.
The ọrịa adịgide na diseased tubers na osisi, na-ebute site ná kọntaktị n'oge ịcha na akuku nke tubers, n'oge mechanized agwọ ọrịa, na ọtụtụ ụdị ụmụ ahụhụ, karịsịa bedbugs na aphids.