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山杨叶锈病广泛分布在欧洲及亚洲各国。病原菌为松山杨栅锈菌[Melam—psora larici-tremulae Kleb.],性孢子及锈孢子产生于各种落叶松上,夏孢子生在山杨叶背面,冬孢子埋生在叶下表皮下,担孢子萌发后产生次生担孢子,后者还能产生次生担孢子和小型孢子。各种孢子的萌发适温:锈孢子为12℃,夏孢子8—12℃,冬孢子12—15℃,担抱子9—18℃。各类孢子萌发都需100％相对湿度。过冬后冬孢子萌发产生的担孢子为侵染落叶松的初侵染源,落叶松上产生的锈孢子是侵染山杨叶的初侵染源,过冬后的夏孢子均不能萌发,因而无侵染力。在人工接种的条件下,各类孢子的繁殖期:性孢子为10日,锈孢子10日,夏孢子6—12日。担孢子侵染兴安、长白、日本、华北、西伯利亚落叶松叶,锈抱子侵染白杨派的种和变种、派内杂交后代、以白杨派为母本的杂交后代,但不侵染黑杨派、青杨派以及二派内或派间杂交后代。
Populus rust is widely distributed in Europe and Asia. The pathogen was Melam-psora larici-tremulae Kleb., And the spores and rust spores were produced on various larches. Secondary spores germinate after spawning, which can also produce secondary spores and spores. Various spores germination suitable temperature: rust spores 12 ℃, summer spores 8-12 ℃, winter spores 12-15 ℃, holding the child 9-18 ℃. All kinds of spore germination require 100% relative humidity. After winter, the spores of winter spores germinated were the primary source of infestation of larch. The spores produced on the larches were the primary source of infection of Populus euphratica and could not germinate after the winter, so no Infectivity. In artificial inoculation conditions, the breeding period of various types of spores: spores of 10 days, rust spores on the 10th, summer spores 6-12 days. Basidiosporium infestation Xing’an, Changbai, Japan, North China, Siberian larch leaves, rust spore infestation Poplar species and varieties, send hybrids offspring, poplar pie as the male offspring of hybrids, but not infested Populus Faction, Qingyang faction and two factions within or send offspring hybrids.