| 核盘菌侵染循环类型的研究 |
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| 引用本文： | 王崇仁,汪国森.核盘菌侵染循环类型的研究[J].植物病理学报,1992,22(4):293-299. |
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| 作者姓名： | 王崇仁 汪国森 |
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| 作者单位： | 沈阳农业大学植保系 |
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| 摘 要： | 对核盘菌科7个种21个代表菌株的研究结果表明,核盘菌分4种侵染循环类型:1.土传病害类型:包括人参菌核病、细辛菌核病和向日葵小菌核病菌,其特点是子囊孢子在侵染循环中不起作用,以菌丝体为初侵染源,病健株接触构成再侵染。2.子囊孢子气传病害类型:包括油菜、黄瓜、大豆、莴苣、萝卜、红花和紫云英菌核病,其特点是气传的子囊孢子致病力强,从寄主的花、衰老叶或伤口侵入,以病健组织接触构成再侵染。3.分生孢子气传病害类型:包括黄瓜、油菜、葡萄和大葱灰霉病,其特点是在自然条件下未见有性世代,以气传的分生孢子从寄生的花和衰老叶侵染,以分生孢子和健病株接触构成再侵染。4气传、种传、土传病害兼有型:包括向日葵菌核病,其特点是子囊孢子从花或茎侵染造成盘腐和茎腐,菌核、带菌种子萌生菌丝体侵染造成苗腐和立枯。病健组织接触构成再侵染。
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| 关 键 词： | 核盘菌 侵染循环类型 植物 病害 |
ON THE TYPES OF INFECTION CVCLE OF THE SCLEROTINIACEAE |
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| Wang Chongren,Wang Guosen,Wu Yousan.ON THE TYPES OF INFECTION CVCLE OF THE SCLEROTINIACEAE[J].Acta Phytopathologica Sinica,1992,22(4):293-299. |
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| Authors: | Wang Chongren Wang Guosen Wu Yousan |
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| Institution: | University Plant Immunology Research Labs. Shenyang Agricultural |
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| Abstract: | Through 1985-1989,infection cycles of 21 isolates(7 species) in the Sclerotiniaceae were studied systematically and 4 different types of infection cycle were determined.
1.Soil-borne disease type:This type of infection indicated that apothecia were produced occasionally.Ascospores did not play role in disease infection cycles.Pathogen infected underground parts of host primarily by mycelia from hosts or sclerotia Secondary infection was by movement of mycelia through contact between diseased plants and healthy plants.The diseases invototel are ginseng Sclerotinia rot(Sclerotinia sp.),Sclerotinia asari,and sunflower Sclerotinia wilt(Sclerotinia minor). |
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