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Dependencia, colonización y crecimiento en Gmelina arborea inoculada con cinco cepas de hongos micorrízicos arbusculares

Revista Facultad Nacional de Agronomia Medellin, ISSN: 2248-7026, Vol: 72, Issue: 2, Page: 8775-8783
2019
  • 2
    Citations
  • 251
    Usage
  • 28
    Captures
  • 0
    Mentions
  • 30
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    2
    • Citation Indexes
      2
  • Usage
    251
  • Captures
    28
  • Social Media
    30
    • Shares, Likes & Comments
      30
      • Facebook
        30

Article Description

Gmelina arborea is a forest species of increasing use in the establishment of commercial plantations in Colombia. The areas where it is currently planted are deficient in nutrients, so the use of Arbuscular Mycorrhizal Fungi (AMF) can be an alternative to improve phosphoric fertilization. The aim of this work was to determine the mycorrhizal dependency, colonization, and growth of G. arborea when it is inoculated with Rhizoglomus fasciculatum, Rhizoglomus aggregatum, Rhizoglomus irregulare, Glomus fstulosum, and Entrophospora colombiana, under different concentrations of phosphorus (P) in a soil solution. A completely randomized design was used with a 6×3 factorial arrangement, five AFM strains + control (uninoculated) and three P doses (0.002, 0.02, and 0.2 mg L) with five replicates per each treatment and twice through time. Mycorrhizal colonization and dependency, foliar concentration of P, dry biomass, leaf area, and height were evaluated. A moderate mycorrhizal dependency was obtained under a P concentration of 0.002 and 0.02 mg L and inoculation with R. fasciculatum, R. aggregatum, and R. irregulare while inoculation with G. fstulosum and E. colombiana produced a marginal dependency. It was found a negative effect on G. arborea inoculated with all AMF strains under 0.2 mg L of P. Mycorrhizal colonization presented values between 62.5 - 2.5% for all the AMF evaluated, influenced by AFM strains and P concentration. Plants inoculated with R. fasciculatum, R. aggregatum, and R. irregulare showed a signifcant increase (P<0.05) in their growth. Mycorrhizal dependency and colonization in G. arborea and its growth were highly influenced by species of AMF and amount of P.

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