水曲柳轻基质容器苗菌根化生长效应

doi:10.11707/j.1001-7488.20190218

摘要/Abstract

摘要： [目的]菌根真菌可有效的促进植物生长，提高植物抗性，在林业上具有广泛的应用前景。探索菌根真菌在水曲柳育苗中的合理应用，阐明单一接菌和混合接菌对苗木生长的影响，有助于更好地利用菌种资源，高效优质培育水曲柳菌根化轻基质容器苗。[方法]选用6种菌源接种水曲柳轻基质苗，并以非接菌苗为对照。在生长结束后分析水曲柳轻基质菌根化苗木生长及根系发育差异。[结果]接菌可显著促进苗木生长，提高苗木质量。混合接菌比单一接菌更有助于提高苗木生物量。摩+幼混合接菌处理下苗高比对照高出31.22%；水曲柳落叶松混交林下腐殖质处理苗木地径、叶面积分别比对照高出21.52%、55.13%。混合接菌可以显著促进水曲柳轻基质苗根系发育，增大水曲柳根系直径、根系表面积、根系体积、根尖数量、细胞直径、维管束直径及皮层厚度。混合接菌时菌丝侵染率显著提高的同时，菌丝侵入皮层的层数也增加。[结论]接菌可显著促进水曲柳轻基质容器苗生长。与单一菌种相比，混合接菌对苗木生长及菌根发育具有更好的促进作用。摩+幼混合接菌及水落混交林下腐殖质接菌效果更优。

关键词: 水曲柳, 轻基质容器苗, 摩西球囊霉菌, 幼套球囊霉菌, 混合接菌

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

中图分类号:

S723.1

王思文, 卫星, 李虹谕, 韦庆钰. 水曲柳轻基质容器苗菌根化生长效应[J]. 林业科学, 2019, 55(2): 173-181.

Wang Siwen, Wei Xing, Li Hongyu, Wei Qingyu. Effect of Mycorrhizae on the Growth of Fraxinus mandshurica Container Seedlings in Light Culture Media[J]. Scientia Silvae Sinicae, 2019, 55(2): 173-181.

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