Abstract— Direct effects of plant growth promoting rhizobacteria are associated with the production of phytohormones and clearly the root growth promotion is one of the major markers by which the beneficial effect of plant growth-promoting bacteria is measured. Recent studies reported that treatments of stem cuttings with beneficial microorganisms such as Agrobacterium, Alcaligenes, Azospirillum, Azotobacter, Bacillus, Pseudomonas and Streptomyces species, induce on rhizogenesis, growth promotion of in vitro cultured plants by the natural auxin production of these bacteria and their Inoculation in tissue culture eliminate many of the difficulties associated with the rooting of stem cuttings and protect the micropropagated plants against biotic and abiotic stress. The aim of this work was to analyze the effects of the auxin rhizobacteria producer Pseudomonas sp. strain C2 on rooting and shoot elongation of Lens esculenta and Physalis ixocarpa stem cuttings. In this work, two particularly responses were obtained: root production and shoot elongation in Physalis ixocarpa and only shoot elongation in Lens esculenta stem cuttings. In both plants their mass clonal propagation response was clearly related to their genetic nature, although there was evident the stimulation of growth by the presence of the inoculated Pseudomonas sp. strain C2.
Keywords—plant growth-promoting rhizobacteria, Physalis ixocarpa, Lens esculenta, stem cuttings, in vitro plants.
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