Vesicular-Arbuscular Mycorrhizae Formed on Maize and Tuliptree by Endogone fasciculata

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Abstract
An examination of the type material of E. fasciculata. gave rise to doubt that the chlamydospores and zygospores included belong to the same sp., and the chlamydosporic sporocarps were designated as the lectotype for the sp. Maize and tuliptrees inoculated with E. fasciculata developed vesicular-arbuscular mycorrhizae. Sporocarps formed on or near maize roots. Vesicles in roots and spores borne free in the soil or in sporocarps were all regarded as chlamydospores. Gallaud''s Arum type of mycorrhiza developed on maize plants. On tuliptrees, mycorrhizae similar to Gallaud''s Paris type formed. Vesicles produced by E. fasciculata mechanically damaged the cortex of maize roots. However, maize inoculated with E. fasciculata and grown in soil low in P produced more dry weight than uninoculated maize. Mycorrhizal maize removed more P and K from soil than nonmycorrhizal maize. Tuliptrees grown in moderately fertile soil and inoculated with E. fasciculata made good growth. Uninoculated tuliptrees grown in this soil were stunted.

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