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Studies on dual mycorrhizas of Eucalyptus globulus and E.urophylla II.Inoculant efficacy on the growth

Chen, Y., Gong, M., Brundrett, M. and Dell, B. (1999) Studies on dual mycorrhizas of Eucalyptus globulus and E.urophylla II.Inoculant efficacy on the growth. Forest Research, 12 (6). pp. 591-598.

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The second part of the results based on a glasshouse experiment. The inoculant effectiveness of 4 VA mycorrhizal fungi and 1 ectomycorrhizal fungus alone or in combination on the growth of Eucalyptus globulus and E. urophylla saplings was reported. There were substantial differences on the growth among treatments (P < 0.005). Large responses of height growth and biomass stimulated by fungal inoculation were observed for both plants during 16-week growing in a sterilized Karrakatta yellow sand. Average heights of inoculated E. globulus and E. urophylla seedlings were respectively increased by up to 28.86% (Laccaria+Scutellospora, LS) and 86.65% (Laccaria+Glomus, LG), compared to those of uninoculated ones at 16 weeks after inoculation. Dry weights of sapling were up to 129.93% (tops) and 119.93% (roots) for E. globulus, 133.34% (tops) and 174.83% (roots) for E. urophylla respectively relative to controls. The growths of both plants were more significantly enhanced by dual inoculation with Laccaria and one of 4 VA mycorrhizal fungi than those inoculated individually. There were strong interactions between fungal colonization and plant growth, which reflected the inoculation efficacy. Ectomycorrhizal fungi had a major impact on root system form-substantially reducing the proportion of fine roots (specific root length), but this did not occur when only VAM fungi were present. The results also revealed that phosphorus level in soils greatly affected the growth of plants and interacted fungal efficacy as well.

Item Type: Journal Article
Murdoch Affiliation(s): School of Biological Sciences and Biotechnology
Publisher: Chinese Academy of Forestry
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