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...Czech journal of genetics and plant breeding review https doi org cjgpb interspecific hybridization from historical retrospective through work mendel to current crops david kopecky antonio martin petr smykal institute experimental botany academy sciences olomouc republic instituto de agricultura sostenible ias csic cordoba spain department faculty palacky university corresponding author upol cz citation d a p retrospecti ve j genet breed abstract there is relatively long history traced back ancient time both theoretical as well practical perspectives at first considered an evolutionary dead end it was soon recognized have im portant role in speciation beside his on pea g also conducted using several species including hieracium knowledge shows that the frequent occurrence wide nature often connected with polyploidy has played domestication numerous are allopolyploids sometimes complex hybrid origin this been used extending even intergeneric crosses which benefit heterosis transgressive ...