New data on hybrid necrosis genes in Triticum dicoccum (Schrank) Schuebl

Necrotic genotypes of 148 emmer wheat samples were studied. The prevalence of the ne1ne1ne2ne2 genotype (82.9%) and the absence of the Ne2 gene were s hown. The frequency of the Ne1Ne1ne2ne2 genotype was 17.1%. No significant differences between emmer wheat genotypes from the Volga and Kama regions a nd those from Central and Southern Europe were found. The phylogenetic rela tedness of Indian and African emmer wheats was confirmed. An increase in th e Nel frequency in the course of the emmer wheat spread from the primary to secondary centers of origin was revealed. An introgression of the Ne1(s) g ene from Triticum durum to T. dicoccum was suggested.