温室人工接种试验说明,6个花生矮化病毒(PSV)中国分离物;PSV—1,PSV—13,PSV—Mi(由花生分离),PSV—P、PSV—R和PSV—F(分别由菜豆、刺槐和紫穗槐分离)系统侵染苋色藜和昆诺藜,不侵染红三叶草和矮牵牛,此不同于美国PSV—E株系。依据对花生、豌豆、蚕豆等寄主植物致病力,将PSV—1、PSV—13 PSV—P和PSV-E划分为强毒力株系,PSV—Mi、PSV—R和PSV—F为弱毒力株系。PSV强毒力株系引起花生严重矮化,对花生生长和产量影响明显大于弱毒力株系。 Artificial inoculation experiments in greenhouse indicated that six Chinese isolate of peanut dwarf virus (PSV); PSV-1, PSV-13, PSV-Mi from peanut, PSV-P, PSV-R and PSV- Begonia, Robinia pseudoacacia and Amorpha fruticosa) system invaded the black clover and the petunia, which was different from the American PSV-E strain. PSV-1, PSV-13 PSV-P and PSV-E were divided into virulent strains based on the virulence of host plants such as peanut, pea and broad bean. PSV-Mi, PSV-R and PSV- Force strains. Severe dwarfing of peanut caused by PSV virulent strains significantly affected the growth and yield of peanut than that of virulent strains.