second stage larvae from within eggmasses and males from the soil.
An incision from the end of matured female (perineal pattern) was separated.The providing slides from the sectioms of the end body of matured female , second-stage larvae and males were studied from the point of morphometric characteristics with the indentification keys of Jepson 1987. According to their morphological and morphometric characteristics , the recognized saecies in all infected samples , was Meloidogyne javanica , which is the dominant species of root-nematods in pistachio orchards of Sabzevar city.It was aiso prepared the distribution and pollution intensity map, based on Geographical recorded locations(GPS)
Key words: pistachio, Root-knot nematode , Meloidogyne javanica, Sabzevar.
ISLAMIC AZAD UNIVERSITY
“M.Sc.” THESIS plant pathology
study on Root-knot nematode and the determination of major species,disease severity and its distribution in pistachio gardens in Sabzevar area.