种子传带植物病毒是不可忽视的,但并不是所有病株上结的种子都带有病毒,这要依不同病毒和不同作物品种而异。1957年史密士报道有8种植物种子传播病毒,到1981年曼达哈已知有162种植物种子传播病毒。现今已知的300多种植物病毒,其中有45种可经种子传毒,占15％强。种传病毒多表现花叶症状,亦有其它症状。有些病毒种传力很强,例如莴苣花叶病毒(LMV),只要种传率在0.1％左右, Seeds carry plant viruses can not be ignored, but not all the diseased plants on the knot with the virus, which depends on the different viruses and different crop varieties vary. In 1957, Smith reported 8 species of plant-borne viruses. By 1981, 162 species of plant-borne viruses were known to have been reported in Mandha. More than 300 plant viruses are known today, of which 45 are seed-borne, accounting for 15% of the total. Mosaic virus more performance Mosaic symptoms, there are other symptoms. Some viruses are very powerful, such as lettuce mosaic virus (LMV), as long as the breeding rate of about 0.1%