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Scientia Silvae Sinicae ›› 2019, Vol. 55 ›› Issue (2): 173-181.doi: 10.11707/j.1001-7488.20190218

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Effect of Mycorrhizae on the Growth of Fraxinus mandshurica Container Seedlings in Light Culture Media

Wang Siwen, Wei Xing, Li Hongyu, Wei Qingyu   

  1. School of Forestry Northeast Forestry University Harbin 150040
  • Received:2018-08-18 Revised:2018-12-08 Online:2019-02-25 Published:2019-03-20

Abstract: [Objective] Mycorrhizal fungi can promote plant growth,and improve plant resistance to stresses.Thus,mycorrhizae have greatly application potential in forestry.In this study,our aims are to:(1) explore the rational application of mycorrhizal fungi in the cultivation of Fraxinus mandshurica seedlings.(2) investigate the effects of single and mixed inoculations on the growth of F.mandshurica seedlings in light culture media.[Method] Six inoculations (Glomus mosseae,Glomus etunicatum,mixed inoculation of Glomus mosseae and Glomus etunicatum,humus from Larix gmelinii,F.mandshurica,and their mixed stands,respectively) were used to cultivate F.mandshurica seedlings on light culture media,with non-mycorrhizal seedlings as CK.Effects of inoculations on the root development and seedling growths of F.mandshurica cultivated in light culture media were investigated over the growth season.[Result] Results showed that the inoculations were able to promote the growth of F.mandshurica seedlings and improve the seedling qualities.Mixed inoculations had better effects than the single ones and the control.The seedling height under G.mosseae and G.etunicatu mixed treatment was 31.22% higher than the CK.Basal diameters and leaf areas of seedlings inoculated by humus from the mixed stands were 21.52% and 55.13% greater than the CK,respectively.Mycorrhizal inoculations were able to increase the biomass of the roots,stems and leaves of F.mandshurica seedlings cultivated in light culture media.Seedling biomass of the seedlings by the mixed inoculation of G.mosseae and G.etunicatu increased much more than that of seedlings with single inoculation (i.e.,G.mosseae and G.etunicatu,respectively).Mycorrhizal inoculation promoted root growth of F.mandshurica seedlings by increasing their root diameters,root superficial areas,root volumes,numbers of root apexes,cell diameters,vascular diameters and layers of cortex parenchyma.[Conclusion] Mycorrhizal inoculation obviously promoted the growth of F.mandshurica seedlings cultivated in light culture media.Compared with single inoculation,the mixed inoculation of G.mosseae and G.etunicatu and Larch and ash mixed stand humus showed better effects on the seedlings.

Key words: Fraxinus mandshurica, light culture medium, Glomus etunicatum, Glomus mosseae, mixed inoculation

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