ISSN:
1573-5036
Keywords:
Acaulospora sp. Endomycorrhiza
;
Soil fertility
;
Gigaspora sp.
;
Glomus spp.
;
Humulus lupulus
;
Mentha piperita
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary In a continuing search for field sources of endomycorrhizal fungi that tolerate high levels of available phosphorus in soil, samples were obtained from long-established liberally fertilized hops (Humulus lupulus L.) and peppermint (Mentha piperita L.) fields. In hops fields, where extractable P (Bray) levels ranged from 21–196 ppm, spores of twoAcaulospora spp. and sixGlomus spp. were isolated. From peppermint fields with P levels of 44 to 244 ppm, spores of oneAcaulospora sp., fourGlomus spp. and oneGigaspora sp. were obtained. Vesicular-arbuscular mycorrhizal (VAM) fungi were found colonizing most roots to some extent, despite the very high fertility of several sites. Although percentages of colonization in hops tended to be low, ranging from 0 to 9.3%, colonizations in peppermint roots were considerably higher averaging 26.5% between the sampled fields, notwithstanding P levels as high as 244 ppm. Curiously, considerable external VAM hyphae were found adherent to or entangling roots in many cases, even where percentage of root length with internal VAM structures was low. The functional benefit, neutrality, or detriment to plants of such high-P tolerant species remains to be determined.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02206891
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