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Inoculation of containerized Pinus pinea L. seedlings with seven ectomycorrhizal fungi

AuthorsRincón, Ana ; Álvarez, Isabel F.; Pera, J.
KeywordsContainerized seedlings
Ectomycorrhizal fungi
Seedling nursery production
Spores inoculum
Vegetative inoculum
Issue Date2001
CitationMycorrhiza 11:265-271 (2001)
AbstractContainerized Pinus pinea L. seedlings are commonly used for reforestation in the Mediterranean area. While there is an increasing knowledge of the potential ectomycorrhizal fungi associated with Pinus pinea, few studies exist of inoculation techniques with selected ectomycorrhizal fungi. We tested seven ectomycorrhizal fungi for their effectiveness with containerized Pinus pinea seedlings. Hebeloma crustuliniforme, Laccaria laccata and Pisolithus tinctorius were applied as vegetative inocula while Melanogaster ambiguus, Pisolithus tinctorius, Rhizopogon luteolus, Rhizopogon roseolus and Scleroderma verrucosum were tested as spore inocula. The inoculum of each fungus was tested at several application rates. Among the fungi tested as vegetative inocula, the highest percentages of ectomycorrhizas were obtained with H. crustuliniforme at all rates tested. The ectomycorrhizas formed by L. laccata varied from 11% to 40% depending on the inoculum rate applied. Vegetative inoculum of Pisolithus tinctorius was only effective at the highest inoculum rates and gave mycorrhization percentages around 60%. Pisolithus tinctorius applied as a spore inoculum formed ectomycorrhizas at a frequency of about 50% at the effective inoculum rates. The rest of the fungi applied as spore inocula produced more than 50% of ectomycorrhizas at the effective spore concentrations. These included the highest percentages of ectomycorrhizas (>80%) obtained with both Rhizopogon species. Differences in growth due to inoculation with the different fungi were not detected and in some cases inoculation even reduced the total biomass accumulated by seedlings. All seedlings reached a size suitable for transplantation.
Description7 pages, figures, and tables statistics.
Publisher version (URL)http://dx.doi.org/10.1007/s00572100127
Appears in Collections:(IRN) Artículos
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