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Báo cáo khoa học: "Sur la mycorhization contrôlée de semis d’Eucalyptus camaldulensis Dehnardt par Gigaspora margarita Becker & Hall"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: "Sur la mycorhization contrôlée de semis d’Eucalyptus camaldulensis Dehnardt par Gigaspora margarita Becker & Hall. | Ann. Sci. For. 1989 46. 131-139 Elsevier INRA 131 Article de recherche Sur la mycorhization contrôlée de semis d Eucalyptus camaldulensis Dehnardt par Gigaspora margarita Becker Hall K. Boudarga et J. Dexheimer Laboratoire de biologie des ligneux J.E. CNR 034613 Université de Nancy I BP 239 54506 Vandceuvre Cedex France reọu le 12-6-1988 accepts le 20-9-1988 Resume Les auteurs présentent une methode d endomycorhization contrôlée de jeunes semis d Eucalyptus camaldulensis par Gigaspora margarita. La verification en microscopie photonique et électronique des mycorhizes obtenues n a pas fait apparaitre des differences significatives avec les mycorhizes naturelles. La technique est done precise et fiable. Bien que limitée pour la production de grandes quantités de plantes mycorhizees elle est néanmoins intéressante pour des etudes théoriques. mycorhization contrôlée - mycorhizes à vésicules et arbuscules - eucalyptus - Gigaspora -morphologie - ultrastructure Summary Controlled mycorrhization of Eucalyptus camaldulensis seddlings by Gigaspo-ra margarita Becker Hall. The authors present a method for the controlled endomycorrhization of young Eucalyptus camaldulensis seedlings by Gigaspora margarita. The host plant seeds were disinfected and endophyte spores were superficially disinfected and allowed to germinate separately. The plantlets and spore with a germination tube were confronted in the symbiosis medium Crush et Hay 1977 in a large Petri dish Fig. 1 . After 36 days light and electron microscopic examination of the mycorrhizas obtained failed to show any significant differences with natural mycorrhizas. The internal cortical cells infected by the endophyte presented a dense cytoplasm surrounding a well-developed arbuscule the host plasmalemma delimiting the interface was never broken Fig. 2 . This method is therefore precise and reliable. Although of limited use for the production of large quantities of mycorrhized plants it may be useful for theorical studies. .