毛白杨不同无性系对叶锈病（Melampsora magnusiana）抗病性的研究

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。

THE RESISTANCE OF CLONES OF POPULUS TOMENTOSA TO POPLAR LEAF RUST FUNGI; MELAMPSORA MAGNUSIANA

215 clones of Populus tomentosa, collecting from different geographic localities in China, were inoculated with leaf rust fungi (Melampsora magnusiana) in the green house in Beijing Forestory University. The infection of the clones on natural occurance were investigated in Shandong provance. Results showed that the resistance of poplar clones to the leaf rust fungi was distinctly different. Clones of South-west Shanxi, South-east Gansu and the South of Shanxi are more resistant than that of Henan, the South of Hebei and the West of Shandong. The most resistant clones contributed mainly in South-west Shanxi, whereas the most susceptible ones, in the South of Henan