【摘要】 对陕西省1152份玉米农家种进行丝黑穗病抗源筛选、鉴定结果,HR占6.1%,MR占66.8%,S占25%。重复鉴定2～4次的稳定抗源18个。杂交试验显示,F₁发病率介于双亲,高于双亲和低于双亲的分别占60.0%、26.7%和13.3%,以Mo17为亲本的F₁表现抗病,以辽1311×变755的F₁发病率21.8%。更多还原

【Abstract】 1152 farmer cron varieties of shaanxi Province were identified and selected. The results showed as follows: HR 6.7% of them, MR66.8% of, S 25% of, HS 2% of. There were 18 stable resistance resouce in them by 2～4 times identified. The results of intercross showed that disease incidence of F₁ Oppeared 60.0% of between both parents, 26.7% of over the parents and 13.3% of beneath the par ent. Offspring F₁ Which one of parents was Mo17 presents resistanse, and F₁ of Liao 1311×Bian 755 presents 21.8% of disease incidence.更多还原