New isolates of ectomycorrhizal fungi and the growth of eucalypt

Pesquisa Agropecuária Brasileira

Luiz Afonso Borges De Souza¹  Pedro Augusto Pinto Bonnassis¹  Germano Nunes Silva Filho¹  Vetúria Lopes De Oliveira¹ 

[1] ,Universidade Federal de Santa Catarina Departamento de Microbiologia e Parasitologia Florianópolis SC ,Brazil

关键词: Chondrogaster;    Pisolithus;    Eucalyptus dunnii;    efficiency;    inoculation;    plant growth;    Chondrogaster;    Pisolithus;    Eucalyptus dunnii;    eficiência;    inoculação;    crescimento vegetal;   

DOI  :  10.1590/S0100-204X2008000200012

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate the efficiency of ectomycorrhizal isolates on root colonization, phosphorus uptake and growth of Eucalyptus dunnii seedlings. Inocula of ten ectomycorrhizal isolates of Chondrogaster angustisporus, Hysterangium gardneri, Pisolithus spp., and Scleroderma spp. were aseptically produced in a peat-vermiculite mixture supplemented with liquid culture medium. Plants grew in a similar substrate supplemented with macro-and micro-nutrients; treatments were randomly distributed in a greenhouse. After three months, seedlings inoculated with three isolates - UFSC-Sc68 (Scleroderma sp.), UFSC-Ch163 (Chondrogaster angustisporus), and UFSC-Pt188 (Pisolithus microcarpus) - had a phosphorus shoot content and a shoot dry matter higher or equivalent to those of noninoculated controls which had been fertilized with a 16-fold phosphorus amount. These isolates were selected for new studies for establishing inoculum production techniques, in order to be applied in reforestation programmes under nursery and field conditions.

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