Prevalence of AM Fungal association in Some Weeds Growing in University Botanical Garden

Abstract

Screening of AM fungal association on fifty five weeds belonging to nineteen families were studied by selecting university Botanical garden. It was observed that all weeds were established with AM Fungal association. However per cent root colonization and spore number do not correlated with each other. AM fungal spores represented seven species of four genera, of which Glomus was most predominated one, which is followed by Acaulospora and Scutellospora species. Very meager number of spores of sclerocystis species was found in all the selected ten sites. Abiotic factors were found to be influenced in the distribution of fungal spores. The increase in pH and decrease in phosphate results increase in spore population. Families such as Chenopodiaceae, Cyperaceae, Amaranthaceae, Polygonaceae and Zygophyllaceae were found with mycorrhization with lower percentage, though these families were disputed by early workers. In conclusion, the importance of AM fungal association with weeds community has been discussed.