Affiliation: | 1. Authors’ addresses: Department of Plant Virology, Biology Centre of the ASCR, v.v.i., Institute of Plant Molecular Biology, Brani?ovská 31, 370 05 ?eské Budějovice, Czech Republic;2. Breeding Firm Ing. Hana Jake?ová, CSc., Fulnecká 100, 742 47 Hladké?ivotice, Czech Republic (correspondence to J. Fránová. E‐mail: jana@umbr.cas.cz) |