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用大麦黄矮病毒（ＢＹＤＶ）的混合毒原及分离的４种株系，分别在温室和田间接种不同玉米品种幼苗。结果表明：ＢＹＤＶ的ＲＰＶ（缢管蚜株系）和ＲＭＶ（缢管长管蚜株系）侵染玉米幼苗，其症状以细条点症为主，很少产生红叶症。在温室内潜育期为２９～３４ｄ，田间潜育期较短，为１７～２１ｄ。ＢＹＤＶ侵染玉米可造成轻度矮化，且不同玉米品种苗期对ＢＹＤＶ的抗性也存在差异。
The seedlings of different maize varieties were inoculated in greenhouse and field respectively with mixed virulent of barley yellow dwarf virus (BYDV) and four strains isolated. The results showed that BYDV infected maize seedlings were infected with RPV (Aphis gossypii) and RMV (Aphis gossypii), and the symptoms were mainly sliver spots, with few leaf-fall syndromes. In the greenhouse incubation period of 29 ~ 34d, field incubation period is shorter, for 17 ~ 21d. BYDV infestation of maize caused mild dwarfing, and there were differences in resistance to BYDV at the seedling stage of different maize varieties.