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经测试明确:小麦黄矮病主要发生流行区在陕西、甘肃和山西等省,小麦黄矮病毒(BYDV)主要株系组成为麦二岔蚜/禾谷缢蚜株系(GPV)和麦无网蚜/麦长管蚜株系(DAV),其中GPV为主流株系普遍分布;广泛分布的麦二岔蚜为优势介体;DAV株系仅分布于晚熟冬麦区和春麦区。经1988—1989年重复鉴定与1976—1980和1981年的鉴定结果完全一致(1980—1981年数据引自联合鉴定测试报告),说明无变异现象。
It has been tested clearly that the prevalence of wheat yellow dwarf disease mainly occurs in the provinces of Shaanxi, Gansu and Shanxi. The major strains of BYDV consist of the wheat line Aphis gossypii, GPV and wheat aphid, Aphid / wheat aphid (DAV), in which GPV is the mainstream of the prevalence distribution; widely distributed in wheat aphid as the dominant mediator; DAV lines are distributed only in late winter wheat and spring wheat area. The results of the repeated evaluations from 1988 to 1989 are completely consistent with those of 1976-1980 and 1981 (data from the joint appraisal test from 1980 to 1981), indicating no variation.