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摘要
Effects of soil chemical properties on arbuscular mycorrhizal fungal (AMF) symbiosis with wild service tree (Sorbus torminalis L. Crantz) were examined with the aim of assessing the root colonization rate at three forest sites in northern Iran. Soil characteristics including pH, available phosphorus (P), potassium (K), organic matter, total nitrogen, acid and alkaline phosphatase activities, CaCO3, spore density (SD) and AMF colonization of soil and root samples were analyzed. The study sites were investigated in spring and autumn to highlight the effects of varying soil chemical properties on AMF colonization. K, pH, root colonization, SD and acid phosphatase activity showed no significant differences among sites and seasons, while total nitrogen, P, organic matter and alkaline phosphatase activities showed significant differences among sites and seasons. AMF colonization rate was more than 51% and 32% of roots in spring and autumn, respectively. No correlation between root colonization and soil chemical parameters in spring and autumn were detected. There was no correlation between percentage of AM root colonization and SD nor other soil parameters in spring and autumn. SD and CaCO3 were significantly negatively correlated in spring and autumn. Despite differences in soil characteristics, results showed that SD and root colonization were not significantly different among sites. We concluded that wild service trees had strong symbiosis with AMF, while soil properties might not have a significant effect on the symbiosis. Therefore, the use of AMF colonized seedlings can be considered as an appropriate method for reforestation and conservation of this rare tree species.
- 出版日期2015-6
- 单位中国林业科学研究院热带林业研究所
