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近年来，由于病毒病的蔓延，严 重影响甘薯的生产和利用，导致甘薯 严重减产和品质变劣，当前国内外既 无高抗病毒病的品种，又无有效防治 病毒病的药剂。因此，选用脱毒甘薯 来提高甘薯产量，改善甘薯品质是目 前的首选方法。我们于１９９８～２０００ 年连续三年进行了脱毒甘
In recent years, due to the spread of virus diseases, the production and utilization of sweet potato are seriously affected, leading to the serious yield reduction and quality deterioration of sweet potato. At present, neither domestic nor foreign varieties with high resistance to virus diseases nor effective agents for preventing and controlling virus diseases. Therefore, the selection of virus-free sweet potato to increase sweet potato production, improve sweet potato quality is the preferred method. We conducted three years in a row from 1998 to 2000 free Gan