Sheng LI, Lina JIANG, Jielei SONG, et al. Effects of Arbuscular Mycorrhizal Fungi, Glomus etunicatum Inoculation and Different Inoculum Concentrations on the Growth of Ageratina adenophora Sprengel[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY(Natural Science), 2019, 34(2): 193-199. DOI: 10.12101/j.issn.1004-390X(n).201801025
Citation: Sheng LI, Lina JIANG, Jielei SONG, et al. Effects of Arbuscular Mycorrhizal Fungi, Glomus etunicatum Inoculation and Different Inoculum Concentrations on the Growth of Ageratina adenophora Sprengel[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY(Natural Science), 2019, 34(2): 193-199. DOI: 10.12101/j.issn.1004-390X(n).201801025

Effects of Arbuscular Mycorrhizal Fungi, Glomus etunicatum Inoculation and Different Inoculum Concentrations on the Growth of Ageratina adenophora Sprengel

  • PurposeTo investigate the effects of different inoculum concentrations on the growth of Ageratina adenophora Sprengel, and compare the mycorrhizal dependency, which would provide essential information of using different methods for A. adenophora prevention and controlling.
    MethodSeedlings of A. adenophora were planted in pots with sterilized soil and three inoculum concentrations (5, 10, and 15 g/plant) of Glomus etunicatum were inoculated.
    ResultThe mycorrhizal infection rate on A. adenophora increased with the increase of inoculum concentration. The infection rate was the highest at 80.16% when the inoculum concentration was 15 g/plant. Inoculation of G. etunicatum significantly increased the growth of A. adenophora which was related to both inoculum concentration and the duration of inoculation. After 2 months of inoculation, the highest growth rate was 0.61 cm/d with inoculum concentration of 10 g/plant. G. etunicatum improved the growth of A. adenophora with the inoculum concentration increased. The plant height increased by 22.63%, the total leaf area by 61.29%, the total root length by 27.44%, the total biomass increased by 74.13%, and the stem biomass increased by 15.79% at the inoculum concentration of 15 g/plant, while the ratio of root to shoot and root biomass decreased by 39.42% and 24.73% respectively, compared with at the concentration of 5 g/plant. The mycorrhizal dependence of A. adenophora on G. etunicatum was higher as the inoculum concentration increased. The mycorrhizal dependency was up to 510.21% at the inoculum concentration of 15 g/plant.
    ConclusionInoculation of G. etunicatum significantly promoted the growth of A. adenophora through the biomass regulation.
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