[Virus - aphid- host plant interaction in relation to barley yellow dwarf virus affecting cereals, and bean yellow mosaic viruses affecting faba bean in Syria]

acyrthosiphon aphis craccivora aphis fabae barley yellow dwarf virus bean common mosaic virus cereales cereals disease transmission elisa faba beans haba myzus siria syria syrie test elisa transmission des maladies vecteur de maladie vectores vectors virus enanismo amarillo de cebada virus jaunisse nanisante de l'orge