Identification of viruses affecting primroses (Primula L.) and virological evaluation of the Lithuanian hybrids

Abstract

This work presents data on investigation of virus diseases affecting primrose (Primula L.) in Lithuania and identification of the causal agents. The symptoms for virus diseases visual recognition were determined and described. Three viruses, Cucumber mosaic cucumovirus (CMV), Tobacco necrosis necrovirus (TNV), Tobacco rattle tobravirus (TRV), causing diseases in this crop were identified by the methods of test-plants and electron microscopy. According to Lithuanian State Program “Genefund” the virological evaluation of primrose hybrids created by Lithuanian breeders was carried out. Twenty five hybrids of primrose were surveyed their virological state evaluated and the causal agent CMV was identified. The most resistant to virus diseases primula hybrids were selected for propagation.