1 前言植物病原体侵染的研究是个疑难问题,以前不知道侵染和病害影响的过程。为了弄清这个问题,1971—1978年在瑞士联邦林业研究所,进行了侵染研究,现将结果总结如下。2 方法2.1 试验植物总计选用2139株云杉,来自31个无性系(平均每个品系69株)。植物采用不同的无性繁殖,接穗取自80年和150年生的树木,并取自不同的海拔高度(种源Dielsdorf—500m、Kerns—800m、Lukmanier—1900m)。培土后接穗便能自己生根。云杉无性系1963年在 1 Introduction The study of phytopathogen infection is a difficult one. Previously, it did not know the process of infection and disease. In order to clarify this issue, a study of infection was conducted at the Swiss Federal Institute of Forestry in 1971-1978 and the results are summarized below. 2 Methods 2.1 Tested plants A total of 2139 spruce species were selected from 31 clones (an average of 69 strains per strain). Plants were cloned in different climates, with scion taken from trees aged 80 and 150 years and taken from different altitudes (provenance Dielsdorf-500m, Kerns-800m, Lukmanier-1900m). After the soil scion will be able to take root. Spruce clones in 1963