Volume 9, Issue 4 (10-2010)
Abstract
Many investigations have been carried out to produce ectomycorrhizas on the growth and nutrent absorption of plants. However, no investigations has been carried out on the effect of ectomycorrhizas on nutrient contents of pistachio Badamy, when mycorrhzal (M) and Non-mycorrhizal (NM) plants exposed to different amounts of Mg. To study the resistance role of ectomycorrhizal Pistachio plants exposed to excess Mg, mycorrhizal (M) and Non-mycorrhizal (NM) plants of pistachio var Badami were grown at axenic condition and were treated with different levels of Mg (MgSo4) prepared as a Hogland nutrient solution with 1/2 concentration. The colonization rates of the plants with Agaricus bisporus and mineral nutrient contents in roots and shoots were measured and statistically compared. The results showed the increasing of mycorrhizal colonization as Mg increased in the medium. Mycorrhizal plants had higher Mg, Ca, P, k, Fe, Na, Mn, Zn, Cu contents at high levels of Mg treatment. At low amounts of Mg, K, Fe, Mn, Cu contents of NM plants were higher than M plants.
