臺灣木瓜輪點病研究初報

Abstract

屏東公館地區所採木瓜病株，經汁液接種在判別植物葉片上，可使Chenpodium amaranticolor及C. quinoa產生局部病斑；南瓜、西瓜、胡瓜和蛇瓜出現嵌紋病癥，香瓜出現系統性局部壞疽病斑，但不能在其他24種植物上引起病癥。西瓜和南瓜經證實為田間天然寄主。本病毒可經由桃蚜(Myzus persicae)媒介傳播，但不經由木瓜種子傳播。 A virus disease has been very serious on papaya in southern Taiwan since 1976. The virus was transmitted by mechanical means from papaya to papaya, watermelon, muskmelon, pumpkin, squash, snakegourd and cucumbers and to Chenopodium amarnticolor and Ch. quinoa. It was also transmitted by aphid (Myzus persicae), but not through papaya seeds.