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本文收集了来自全国不同地区215个毛白杨无性系,经室内人工接种试验和田间自然发病情况调查表明,来源于不同地区的毛白杨无性系对叶锈病(Melampsora magnusiana)的抗病性差异显著。来自陕西西南部,甘肃东南部和山西中南部的毛白杨无性系对叶锈病抗性较强,而来自河南大部、河北中南部和山东西部的无性系较感病。其中,最抗病的无性系集中分布于陕西西南部,最感病的无性系则多分布于河南中南部。
In this paper, we collected 215 Populus tomentosa clones from different regions of China. The results of in-laboratory artificial inoculation experiments and natural occurrence in the field showed that Populus tomentosa clones derived from different regions had significant differences in resistance to leaf blight (Melampsora magnusiana). Populus tomentosa clones derived from southwestern Shaanxi, southeastern Gansu and central south Shanxi were more resistant to leaf rust, while clones from most of Henan, central-southern Hebei and western Shandong were more susceptible. Among them, the most resistant clones were concentrated in the southwest of Shaanxi Province, while the most susceptible clones were found in central-southern Henan.