EFFECTS OF ARBUSCULAR MYCORRHIZAL INOCULATION ON IN VIVO ROOT INDUCTION AND DEVELOPMENT IN SHOOTS OF MRS 2/5 PLUM ROOTSTOCK GROWN IN VITRO

摘要

The purpose of this research was to study the effects of mycorrhizal inoculation by Glomus mosseae on in vivo rooting of plum shoots grown in vitro. From the results obtained it was not possible to establish the influence of this fungus on root induction, since even in the uninoculated treatment rooting percentage reached the maximum. In contrast, it was pointed out that inoculation influenced root morphology since endomycorrhizal plants displayed a more branched root system. Moreover, inoculation also appeared profitable in stimulating shoot apex growth, allowing plants to overcome the prolonged rest period to which micropropagated plantlets of this clone are often subject.