Abstract
Meristem explantates of strawberries ( Fragaria ananassa Duch.) were inoculated with the vesicular-arbuscular (VA) mycorrhizal fungi Gigaspora margarita, Glomus macrocarpum and Glomus caledonium during transplanting. All inoculated plants formed mycorrhizal symbiosis which was particularly highly developed in plants inoculated with G. caledonium. G. caledonium and G. margarita significantly increased plant biomass with respect to the control. High phosphorus levels were detected in mycorrhizal plants. The competitive ability of the introduced strains of G. caledonium and G. margarita with native strains was verified in a further experiment in which an unsteamed substrate containing native spores of endomycorrhizal fungi, primarily of Glomus albidum , was used. All the plants were mycorrhizal and the biomass of the plant inoculated with G. margarita was higher than that of non-inoculated plants or plants inoculated with G. caledonium . The fungal symbionts introduced increased phosphorus content of the plant.
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