: E le e 'ngoe ea livaerase tse senyang ka ho fetesisa tsa litapole lefatšeng ka bophara, Potato Virus L (PVL) ke taba e tšoenyang balemi ba litapole, litsebi tsa temo le bo-ramahlale. Sengoliloeng sena se ikemiselitse ho fana ka kakaretso e felletseng ea PVL, ho kenyeletsoa matšoao a eona, phetisetso le maano a taolo.
Potato Virus L ke kokoana-hloko ea RNA e nang le khoele e le 'ngoe e tšoaetsang limela tsa litapole, e baka matšoao a mangata a kenyeletsang ho hola, ho kobeha ha makhasi le necrosis. PVL e fetisoa ke hoaba, hammoho le ka li-tubers tsa peo tse nang le tšoaetso le ho ata ha limela. Kokoana-hloko e ka ba le tšusumetso e kholo ho kotuloeng ha lijalo tsa litapole, boleng, le thekisong.
Taolo e hlwahlwa ya PVL e kenyeletsa mawa a mmalwa, ho kenyeletswa tshebediso ya dipeo tsa peo tse se nang kokoana-hloko, tshebediso ya dibolayadikokonyana ho laola dikokonyana tsa hoaba, le ho tloswa ha dimela tse tshwaeditsweng ho fokotsa letamo la dikokwana-hloko. Mekhoa e meng, joalo ka ho fapanyetsana lijalo le ho sebelisa mefuta ea litapole tse sa khoneng ho mamella, le eona e ka thusa ho thibela phetiso ea PVL le ho fokotsa ts'oaetso ea vaerase lijalong tsa litapole.
Qetellong, Potato Virus L ke tšokelo e kholo tlhahisong ea litapole mme e hloka mokhoa o felletseng oa taolo bakeng sa chai e ntle ea lijalo. Ka ho sebelisa maano a nepahetseng a taolo, balemi le litsebi tsa temo ba ka laola PVL ka nepo le ho netefatsa ts'ebetso ea nako e telele ea tlhahiso ea litapole.
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