大豆花叶病毒(SMV)三株系致病性的交互保护作用研究

STUDY ON THE PROTECTIVE INTERACTION OF PATHOGENICITY OF THE THREE STRAINS OF SOYBEAN MOSAIC VIRUS (SMV)

大豆花叶病毒(SMV)三个株系间混合接种,对致病性没有交互保护作用。先接1号株系后接3号株系,对3号株系的致病性有一定的干扰现象。1号加3号株系混合接种病株种子传毒时,只出现1号株系症状,也表现了1号株系对3号株系的干扰现象。两个和三个株系同时混合接种,病情加重。混合株系接种鉴定品种抗病性,能反应出品种抗SMV的本质。

The pathogenicity of three strains of SMV did not produce the protective interaction, when they were inoculated mixedly. Following Strain 1, when strain 3 was inoculated, the pathogenicity of strain 3 existed some interference from those of strain 1. Seeds collected from the infected plants inoculated by mixed Strain 1 with Strain 3 were planted. The seedling of seed borne SMV presonted same symptoms as those from inoculated with strain 1 only, and still appeared interference with strain 1 to strain 3. The plants inoculated mixedly with two or three strains had. more significant Symptom than those of with a strain only. Resistant character of varieties to SMV could be showed by the identification of resistance on varieties inoculating with mixed strains.