2002 Volume 48 Issue 3 Pages 248-253
In this study, we investigated the arbuscular mycorrhizal colonization and sporulation in rhizosphere of Anthoxanthum odoratum L. and Aster ageratoides Turcz. var. ovatus (Franch. et Savat.) Nakai which were frequently occurred in both native and sown grasslands. The mycorrhizal colonization of A. odoratum and A. ageratoides var. ovatus were significantly lower in sown grassland than in native grassland. Seasonal patterns of mycorrhizal colonization of A. odoratum and A. ageratoides var. ovatus were different between native and sown grasslands. The difference between the mycorrhizal sporulation in rhizosphere of A. odoratum in native and sown grasslands was small, and the mycorrhizal sporulation in rhizosphere of A. ageratoides var. ovatus did not differ between native and sown grasslands. The comparisons between shoot characteristics of both plant species, soil physical and chemical properties of both grasslands suggested that the low mycorrhizal colonization observed on the sown grassland was mainly influenced by high level of soil phosphate, soil acidification and soil compaction.
