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马铃薯是世界第四大粮食作物,其病毒病危害严重。2010年对湖南马铃薯主产区采集的66个病毒标样进行了RT-PCR检测,结果表明,检测出的马铃薯病毒有马铃薯Y病毒(PVY)、马铃薯卷叶病毒(PLRV)、马铃薯X病毒(PVX)、马铃薯S病毒(PVS)、马铃薯A病毒(PVA)和马铃薯纺锤块茎类病毒(PSTVd)。其中PVS的检出率最高,为54.5%,其次是PVX,检出率为45.5%,PVY的检出率为39.4%,PSTVd和PVA的检出率均为21.2%,PLRV的检出率为18.2%。2~4种病毒的复合侵染现象较为普遍。PVY中重组型PVY占85.7%。
Potato is the fourth largest food crop in the world and its virus disease is seriously endangered. Sixty-six virus samples collected from Hunan’s main potato producing areas in 2010 were detected by RT-PCR. The results showed that the detected potato viruses were PVY, PLRV, PVX, PVS, PVA and PSTVd. The highest detection rate of PVS was 54.5%, the next was PVX, the detection rate was 45.5%, the detection rate of PVY was 39.4%, the detection rate of PSTVd and PVA was 21.2%, the detection rate of PLRV was 18.2%. 2 to 4 kinds of virus complex infection is more common. PVY accounted for 85.7% of recombinant PVY.