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广西东南沿海蔗区根际土壤AM真菌多样性研究
作者: 陈廷速1  张金莲1  李 松2  覃晓娟1  汪 茜1  王灿琴1  吴圣进1  谭裕模3  杨荣仲2  李杨瑞2  4  
单位: (1 广西农业科学院微生物研究所;2广西农业科学院甘蔗研究所/中国农业科学院甘蔗研究中心/广西甘蔗遗传改良重点实验室;  
关键词: 蔗区  根际土壤  AM真菌  多样性  
分类号:S154.38
出版年,卷(期):页码:2012 ,43 ( 1 ): 页码:57-61
摘要:

【Objective】Distribution of arbuscular mycorrhizas (AM) fungi in rhizospheric soils of Beihai and Qinzhou sugarcane planting areas in Southeast Guangxi was investigated in order to provide fundamental references for mycorrhizal fungi resource conservation, and the selection and utilization of elite bacterial strains. 【Method】The soil samples(5-20 cm)of rhizosphere were collected from Beihai and Qinzhou sugarcane fields, AM fungal spores were separated using wetting sieve decantation and sucrose centrifugation method, and identified on the basis of morphological characteristics of the species. 【Result】 Six spore species of AM fungi including 2 of Glomus, 3 of Acaulospora and 1 of Scutellospora were identified in the soil samples. 【Conclusion】 Among arbuscular mycorrhizas population in experimental sugarcane rhizospheric soils of Southeast Guangxi, Acaulospora and Glomus are in the ascendant. The strain A.sp1 presents the maximum in both of two sugarcane planting areas, and the special species of AM in Qinzhou and Beihai is A.sp2 and S. gregaria, respectively.

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