Cov kws tshaj lij ntawm Pyatigorsk ceg ntawm Tsoom Fwv Teb Chaws Cov Nyiaj Txiag Nyiaj Txiag VNIIKR (Tag nrho-Lavxias Lub Chaw rau Cov Tsob Ntoo Quav) thaum lub sijhawm tshawb fawb hauv cov qauv (cov qauv) ntawm cov khoom tswj hwm (cov noob qos yaj ywm) cov kab mob txaus ntshai - qos yaj ywm spindle tuber viroid.
Cov ntaub ntawv hais txog kev txheeb xyuas cov khoom cais tawm raug xa mus rau Lub Chaw Tswj Xyuas Thaj Av ntawm Rosselkhoznadzor rau Stavropol Territory thiab Karachay-Cherkess Republic rau kev ntsuas kev cai lij choj.
Viroids tsis tsim cov khoom ywj pheej. Nws tsuas yog 359 nucleotide chunk ntawm RNA. Nws yog tam sim no nyob rau hauv cov nroj tsuag cuam tshuam thiab replicates los ntawm biosynthetic mechanisms ntawm tus tswv tsev cog. Cov qoob loo ntawm tubers, nyob ntawm seb cov kab mob thiab cov qos yaj ywm ntau yam, txo los ntawm 30-90%.
Tus kab mob no tshwm sim los ntawm kev cuam tshuam ntawm cov nroj tsuag kev loj hlob thiab kev loj hlob, crushing ntawm nplooj, curvature ntawm lawv lobes thiab rods, folding ntawm lobes raws midrib, waviness ntawm lawv cov npoo, xim hloov (greyish-ntsuab los yog yellowish tint, tej zaum anthocyanin xim. ntawm sab nraub qaum, ntug thiab cov lus qhia).
Tubers yog elongated, pear-puab los yog dumbbell-puab, nrog rau ntau lub qhov muag, tej zaum kuj txawv xim, nrog brownish me ntsis ntawm lub qhov muag. Cov tua tsis muaj zog, feem ntau, tsis yog ib txwm tua, lawv tsim cov nodules.
Cov kab mob tseem nyob hauv cov kab mob thiab cov noob, kis tau los ntawm kev sib cuag thaum txiav thiab cog cov tubers, thaum kho kho tshuab, thiab ntau hom kab, tshwj xeeb tshaj yog bedbugs thiab aphids.