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Acta Prataculturae Sinica ›› 2017, Vol. 26 ›› Issue (11): 85-93.DOI: 10.11686/cyxb2017001

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Effect of arbuscular mycorrhizal fungi on growth and physiological characteristics of Lilium brownii

LIU Zhao-Na1,2, GUO Shao-Xia1,2, LI Wei2,*   

  1. 1.Institute of Mycorrhizal Biotechnology, Qingdao Agricultural University, Qingdao 266109, China;
    2.College of Landscape and Forestry, Qingdao Agricultural University, Qingdao 266109, China
  • Received:2017-01-06 Revised:2017-05-12 Online:2017-11-20 Published:2017-11-20

Abstract: Lilium brownii bulbs under cool storage were used to test the effect of inoculated arbuscular mycorrhizal (AM) fungi (Glomus mosseae, G. versiforme and a mix of the two) on bulb growth, physiological and biochemical characteristics in a pot experiment. The results showed that the individual and mixed AM treatments promoted L. brownii growth. Plant height, stem diameter, dry weight above and below ground and leaf surface area increased significantly compared with the non-inoculated control. Of all the inoculation treatments, the mixed fungi had the highest AM colonization. Compared with the control, inoculation with mixed AM significantly improved L. brownii leaf chlorophyll content, superoxide dismutase, peroxidase and catalase content. The inoculation of lily malondialdehyde content was 30% lower than that in the control, while soluble protein and soluble sugar content increased by 25% and 46% respectively, indicating that AM fungi can reduce the damage of membrane lipid oxidation, decrease plant RNA degradation enzymes in the plant, enhance the capacity of the non-enzymatic defense system and increase water retention in plant cells. In addition, inoculation with AM fungi had significant positive effects on leaf net photosynthetic rate, transpiration rate and stomatal conductance.Inoculation with mixed fungi showed significantly higher effects on L. brownii growth and physiological characteristics than non-mixed treatments, while no significant differences were detected between the two strains individually. The study thus shows that G. mosseae and G. versiforme, and especially inoculation with mixes of the two, have the potential to enhance L. brownii growth and flowering.