A Relationship between Plant Growth and Increasing VA Mycorrhizal Inoculum Density

The relationship was examined between the density of vesicular-arbuscular (VA) mycorrhizal inoculum and the growth of Phleum pratense L. and Agropyron trachycaulum (Link) Malte. The most probable number method (MPN) was used with combinations of host, VA mycorrhizal inoculum and a series of dilution...

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Published inThe New phytologist Vol. 120; no. 2; pp. 227 - 234
Main Authors Clapperton, M. Jill, Reid, David M.
Format Journal Article
LanguageEnglish
Published Oxford, UK Cambridge University Press 01.02.1992
Blackwell Publishing Ltd
Blackwell
Subjects
Acid soils
Agrology
Agronomy. Soil science and plant productions
Agropyron trachycaulum
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Inoculum density
Mycorrhizal fungi
nutrient availability
Parasitism and symbiosis
partially sterilized soil
Phleum pratense
Plant growth
Plant physiology and development
Plant roots
Plants
Prairie soils
Soil fungi
Soil plant interactions
Symbiosis
VA mycorrhizas
Symbiosis
Monocotyledones
Inoculation
Nutrition
Phleum pratense
Gramineae
Growth
Angiospermae
Mycorrhiza
Spermatophyta
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Summary:The relationship was examined between the density of vesicular-arbuscular (VA) mycorrhizal inoculum and the growth of Phleum pratense L. and Agropyron trachycaulum (Link) Malte. The most probable number method (MPN) was used with combinations of host, VA mycorrhizal inoculum and a series of dilutions of field soil There was a positive correlation between the proportion of field soil and the amount of mycorrhizal colonization. The numbers of tillers and leaves, shoot and root dry weights, and root: shoot ratios were negatively affected by increasing proportions of field soil inoculum. The addition of fertilizer alleviated the effects of increasing proportions of field soil on plant growth and reduced the amount of colonisation by mycorrhizal fungi. The relationship between increasing proportions of field soil and plant growth was not species-specific. We conclude that there was an interaction between the inoculum density of VA mycorrhizal fungi and soil nutrient availability which affected plant growth
Bibliography:Present address to which correspondence should be sent: Agriculture Canada, Research Station, Box 3000, Main, Lethbridge, Alberta TIJ 4B1, Canada.
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0028-646X
1469-8137
DOI:10.1111/j.1469-8137.1992.tb05658.x