当前位置: 首页 > 文章 > 细辛菌核疫病Sclerotinia asari的研究 Ⅰ.损失调查、症状类型及病原菌 沈阳农业大学学报 1982 (2) 52-61
Position: Home > Articles > STUDIES ON SCLEROTIAL BLIGHT OF ASARUM HETEROTROPOIDES VAR. MAN DSHURICUM Ⅰ. DISEASE DAMAGE SYMPTOMS AND FUNGUS PATHOGEN Journal of Shenyang Agricultural University 1982 (2) 52-61

细辛菌核疫病Sclerotinia asari的研究 Ⅰ.损失调查、症状类型及病原菌

作  者:
王崇仁;吴友三
摘  要:
细辛菌核疫病是随着细辛人工扩大栽培而出现的一个新问题。此病在辽宁省的新宾、凤城、宽甸、桓仁、本溪、丹东市郊区和吉林省等局部地区均有发生。病害发生在植株的地下和地上各个部分,诱致根腐、芽腐、苗腐、叶腐、柄腐和果腐等症状,最后使全株腐烂死亡。病害由细辛核盘菌,Sclerotinia asari 侵害所致。病菌具有无性与有性两个世代。在田间自然情况下,无性世代的菌丝体是主要的侵染源,多次试验重复,由菌核萌发产生子囊盘的机率较低,子囊孢子致病力很弱。细辛核盘菌生长温度范围为0~27℃,至28℃以上基本上不能生长,32℃经24小时即死亡。适温条件为7~15℃。病菌在PDA上可以生长,但致病力似有减弱现象,用胡萝卜切块培养具有复壮作用。病菌寄主范围较窄,目前仅知对细聿具有高度致病作用。
译  名:
STUDIES ON SCLEROTIAL BLIGHT OF ASARUM HETEROTROPOIDES VAR. MAN DSHURICUM Ⅰ. DISEASE DAMAGE SYMPTOMS AND FUNGUS PATHOGEN
作  者:
Wang Chongren Wu Yousan
摘  要:
Asarum heterotropoides F. Schmidt var. mand shuricum (Maxim.) Kitag., an important perennial medicinal crop, is cultivated locally in Liaoning Province. Loss of plants caused by blighting in the range of 20 to 80% has been reported recently in cultivated gardens. The causal pathogen, Sclerotinia asari Wu and C. R. Wang has been identified. The pathogen attacks both the underground and aerial parts of the plant. It can cause rots on root, bud, seedling, petiole leaf and fruit. Diseased plants blighted completely and then perished. S. asari has both asexual and apothecial stages. In nature sclerotial blight is carried by mycelia in seeds, seedlings and soil. Apothecia are produced from germinating selerotia. Very few apothecia are produced in nature. Infection of plants by ascospores is negligible. S. asari can grow between 0℃ and 27℃ but not at 28℃. The pathogen grows well in potato dextrose agar between 7℃ and 15℃. It perishes after 24 hours at 32℃. The pathogen weakens its virulence after several transfers in PDA but the virluence could be recoverd by growing the culture subsequently in carrot cubes. The pathogen has only a narrow host range; infection is most on A. heterotropoides var. mandshuricum.

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