Seed Source and Mycorrhizal Fungus Effects on Growth of Containerized Pinus contorta and Pinus ponderosa Seedlings

Authors: Cline, Michael L.; Patrick Reid, C. P.

Source: Forest Science, Volume 28, Number 2, 1 June 1982 , pp. 237-250(14)

Publisher: Society of American Foresters

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Abstract:

The growth performance of selected Pinus contorta and Pinus ponderosa seed sources in the greenhouse was differentially affected by inoculation with three different ectomycorrhizal fungi. Pinus contorta seedlings exhibited high levels of infection which were nonlinearly and positively correlated with total dry weight for Suillus granulatus and Pisolithus tinctorius fungal treatments. Ectomycorrhiza formation in these two fungal treatments was nonlinearly and negatively correlated with P. contorta root/shoot ratio. Pinus ponderosa seedlings possessed low levels of infection in all ectomycorrhizal fungus treatments and showed no correlation between infection and dry weight. The benefit seedlings received from ectomycorrhiza formation was controlled directly by the amount of infection rather than the host genotype. Host genotype had an indirect effect by influencing the amount of ectomycorrhizae formed. Forest Sci. 28:237-250.

Keywords: Pisolithus tinctorius; Suillus granulatus; Rhizopogon luteolus; seed sources

Document Type: Journal article

Affiliations: 1: Department of Forest and Wood Sciences, Colorado State University, Fort Collins, Colorado 80523

Publication date: 1982-06-01

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