— Micropropagated plum plants (Prunus cerasifera Ehrh clone MrS 2/5) were inoculated with 4 different species of arbuscular mycorrhizal fungi (Glomus mosseae, G caledonium, G coronatum and Glomus strain A6) after transfer from an in vitro to an in vivo system.The most and the least infective fungi, G mosseae and G coronatum re- spectively, were tested for their growth-promoting abilities with respect to the micropropagated plum plants.Both fungi improved plant growth in comparison with uninoculated plants.G coronatum showed a prolonged lag phase during the early stage of mycorrhizal infection and affected growth less than G mosseae at the first harvest (4 wk).At the second harvest (14 wk), when mycorrhizal infection by both fungi was high, G coronatum was as effective as G mos- seae in promoting plant growth of P cerasifera.The importance of a rapid mycorrhizal infection during the acclimatiza- tion phase of micropropagated plants is discussed in this paper.plants inoculés.G coronatum montrait un temps de latence prolongé pendant les premiers stades d'infection mycorhizienne; on ne constate pas au premier prélèvement (4 semaines) une augmentation de croissance végétale compa- rable à celle obtenue avec G mosseae.Au deuxième prélèvement (14 semaines), quand les 2 champignons présentaient un taux élevé d'infection mycorhizienne, G coronatum se révélait aussi efficace que G mosseae pour stimuler la croissance de P cerasifera.Ce travail permet de discuter de l'importance d'une infection mycorhizienne rapide au cours de la phase d'acclimatation de vitroplants.infectivité / efficacité / champignon mycorhizien arbusculaire / plant micropropagé / Prunus cerasifera
No takes yet. Share an insight, caveat, or question.
Fortuna et al. (1992) studied this question.