Study on the Response of Alfalfa Germplasm for Resistance to Root Rot

Abstract

Abstract. The investigation was conducted at IASS "Obraztsov chiflik"-Rousse during the period 2009-2011. Bulgarian and foreign germplasm was the object of study. The objective of the present investigation was to isolate and identify the causes of root rot in alfalfa and to determine the reaction of local and foreign germplasm to the agent. Isolation of the pathogen was performed on KDA and Chapek nutritive medium. Positive results were reported in all germplasm observed. Attack was the lowest in annual plants.