Premium
Variation between Soybean Cultivars in Vesicular‐Arbuscular Mycorrhiza Fungi Colonization 1
Author(s) -
Heckman J. R.,
Angle J. S.
Publication year - 1987
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1987.00021962007900030004x
Subject(s) - colonization , cultivar , biology , mycorrhiza , agronomy , arbuscular mycorrhiza , glycine , horticulture , symbiosis , botany , bacteria , amino acid , genetics , microbiology and biotechnology , biochemistry
The potential exists for soybean [ Glycine max (L.) Merr.] cultivars to be differentially colonized by indigenous soil populations of vesicular‐arbuscular mycorrhiza (VAM) fungi. A pot experiment (Typic Palendults) was conducted in a greenhouse to assay the colonization of various soybean cultivars by VAM fungi. Relative colonization of 15 soybean cultivars at two P levels was determined. Individual root systems were compared for the percentage of roots colonized by VAM fungi using an acid fuchsin‐lactic acid staining procedure. Colonization was shown to vary significantly with cultivar. The cultivar colonized by the highest percentage was the nonnodulating isoline of Clark rj 1 rj 1 with 80% of root segments examined being colonized. ‘Williams 82’ exhibited the lowest percentage (57%) of colonization by VAM fungi. The addition of P to the soil reduced the percentage of colonized roots from 68 to 64%, and there was no cultivar ✕ P interaction.