期刊名称：Liminalities : a Journal of Performance Studies
电子版ISSN：1557-2935
出版年度：2017
卷号：83
页码：1 to 18-1 to 18
语种：English
出版社：Liminalities
其他摘要：Arbuscular mycorrhizal (AM) fungi spore number and colonization in the roots of jhum agro-ecosystem in Karbi Anglong district, Assam were studied for three different jhum fallows i.e. 15-year fallow (15 YrF), 10-year fallow (10 YrF) and 5-year fallow (5 YrF) and were compared with adjacent natural forest (NF). Infective propagules of AM fungi before and after the burning of forests were also determined by the MPN technique. Soil physic-chemical properties of the sites have been investigated for no significance relationship with infective propagules of AM fingi. A total of eight (8 ) AM fungi species representing the genera Acaulospora, Glomus, Gigaspora and Scutellospora were isolated from the soil of 4 study sites. Spore number/100 g soils showed variations with respect to fallow age. NF and15 YrF soil showed lowest number of spores that increased towards the 10 YrF and 5 YrF soil. However, species number of AMF recorded to decrease with the increase of fellow age. Variation of spore number was observed though out the year during the study period. Reduction in the infective AM fungi propagules was observed before and after burning. The MPN experiment data revealed that the rate reduction in infective propagules of AM fungi depends on the age of fallow. KEY WORD: Arbuscular mycorrhizal Fungi, Natural forest, Jhum fallow, Root Colonization, Species diversity.
