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蜜梨是我省梨的优良品种。蜜梨成熟期及贮藏期常出现一种群众称为“水痘”的病害,染病的梨叫“痘梨”。其病症是:自皮孔处发病,初为褐色圆形小点,直径约0.5—1.0毫米,逐渐扩展为深褐色豆大近圆形病斑,扩大后直径达1厘米左右,呈褐色近圆形稍陷,并有明显深浅同心轮纹。病斑周缘褐色。取痘梨表皮下病组织分离培养,结果长出了与苹果及梨轮纹病一样的菌丝体,初期
Pear pear is an excellent variety in our province. Pear mature and often appear during the storage of a mass known as “chicken pox ” disease, infected pear called “pox pear ”. The disease is: onset from the skin at the beginning of a brown round dot, diameter of about 0.5-1.0 mm, gradually expanded into dark brown beans near-circular lesions, expanded to a diameter of about 1 cm, brownish round Shaped slightly, and there is a clear depth of concentric pattern. Spot peripheral brown. Subcutaneous epidermis acne tissue isolation and culture, the results grew out of the apple and pear rot disease the same mycelium, the initial