Effect of several VAM endophythes and artificial substrates on in vitro propagated Vitis berlandieri x rupestris “1103 P”

Abstract

Plants of Vitis berlandieri x rupestris “1103 P” propagated in vitro were trasplanted into pots containing an artificial substrate. In a first experiment the action of eight different VAM endophytes, separately inoculated in the same potting substrate was tested. All the endophytes enhanced growth of the plants, as compared to non inoculated controls. In a second experiment one of the effective endophytes, Glomus caledonium, was inoculated on “1103 P” in three different potting media made up with soil, peat and sand. Growth was larger in mycorrhizal plants, as compared to non inoculated controls, in the substrates containing soil, peat and sand in the rate 10/30/60. No growth response was observed in the substrates 0/50/50 and 20/40/40.