RELATIONSHIP BETWEEN POPULATION STRUCTURE AND RESPIRATION ACTIVITY IN APHELENCHUS AVENAE

Abstract

Four populations of Aphelenchus avenae were estabilished on Rhizoctonia solani cultures for six months. The compatibility with R. solani, Verticillium dalbiae, Fusarium solani, F. oxysporum f. sp. lycopersici, Phytophtora parasitica and P, capsici was determined to detect variability among populations. Marked varialions of respiration rates, and inhibition by potassium cyanide and salycilhydroxamic acid were found among the four populations tested due to their different population structures. pH and antimicyn A did not significantly affect the respiration activity of the A. avenae populations.