Estimation of apical necrosis in Junglans regia L. walnuts harvested in Moldova

Abstract

Blight caused by Xanthomonas pv. Juglandis (Xaj) is a bacterial disease of Persian Juglans regia L. walnut. This article refers to an international bibliographic study on microbial risk caused by this bacterium. Recent studies indicate that the bacterium Xantbomonas arboricola pv, juglandis is the most frequently microorganism associated with apical necrosis and can produce initial infections in young nuts. This bacterium was isolated on fruit orchards from Austria, Bulgaria, France, Germany, Greece, Portugal, and Romania. Also, in this work there are characterized and other microorganisms such as Alternaria spp. and Fusarium spp. isolated from „apical necrosis”. Apical necrosis was estimated in walnuts Juglans regia L. harvested in Moldova.