Multiple resistance of spinach (Spinacia oleracea L.) to cucumber mosaic and beet mild yellowing viruses

Abstract

Summary The spinach cultivar “Larina” proved to be highly resistant to 4 isolates of CMV and their equal mixture (= M). Additionally a moderate level of quantitative resistance of this cultivar to BMYV was confirmed serologically by use of ELISA. Deduced from significant differences of resistance levels within the cultivars “Larina” and “Matador” associated with single isolates of CMV, 2 groups of virus isolates were classified preliminarily distinguished by their virulence. The spinach isolate SoPe 28/79, a mung bean isolate Mungo 9 and M belonged to the most virulent group differentiated by the cultivar “Matador”.