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寄生在杨属(Populus)树种上的栅锈菌属(Melampsora)锈菌,不同的菌种其夏孢子的形态特征有明显的差异,可以作为分种的依据。本试验利用光学显微镜和扫描电子显微镜,对我国各种杨树上Melampsora锈菌夏孢子和侧丝的形态特征做了比较观察,并根据这些形态特征来鉴定我国杨属树种上寄生的Melampsora锈菌的种类,还对一些菌种寄生的范围做了调查。 我国杨属树种上寄生的Melampsora锈菌经鉴定的有7种,即:M.magnusianaWagn.;M.laricis Hart(=M.larici-tremulae Kleb.);M.abietis-canadensis (Farl)Ludw.;M.pruinosae Tranz.;M.larici-populinaKleb.;M.allii一populina Kleb.;M.occidentalis Jack.。其中M.abietis-canadensis(Farl)ludw和M.occidentalis Jack.在我国是首次报道。M.larici-populina Kleb和M.allii-populina Kleb绝大多数夏孢子头部光滑无刺,但少数孢子头部有小刺,这一点与国内外的报道不同。
The parasitism is caused by the genus Melampsora on the Populus species. The morphological characteristics of the spores of different species are obviously different and can be used as the basis for the classification. In this experiment, the morphological characteristics of the summer spores and lateral filaments of Melampsora rust were observed with optical microscopy and scanning electron microscopy. According to these morphological characteristics, the morphological characteristics of Melampsora parasitica The species also investigated the extent of some species of parasites. There are 7 species of Melampsora parasitica parasitized on Populus species in our country, namely M.magnusianaWagn .; M.laricis Hart (= M.larici-tremulae Kleb.); M.abietis-canadensis (Farl) Ludw .; M.pruinosae Tranz .; M.larici-populinaKleb .; M.allii-populina Kleb .; M.occidentalis Jack. Among them M.abietis-canadensis (Farl) ludw and M.occidentalis Jack. Are the first reports in our country. M.larici-populina Kleb and M.allii-populina Kleb Most of the spores are smooth and stingless, but there are few spines in the spores of the spores, which is different from the reports at home and abroad.