GENETIC-ANALYSIS OF ANTHER CULTURE RESPONSE IN WHEAT CARRYING ALIEN TRANSLOCATIONS

A bread wheat cultivar, 'Saratovskaya 29', (S29), its nearly isogenic lines carrying alien translocations [Lr9 from Aegilops umbellulata (Eg 29) and Lr19 from Agropyron elongatum (Ps29)] and two F-1 hybrids betw een three nearly isogenic lines of S29 that differed by the Lr19 + Rht 1, Pro1 + Pro2 and Ppd1 + Ppd2 gene complexes, namely the S29 (Lr19 Rht1)/S29 (Ppd1 + Ppd2) F-1 and the S29 (Pro1 + Pro2)/S29 (Lr19 + Rht1 ) F-1, were studied for their culture response with the following resu lts. (1) Translocations with Lr9 and Lr19 decreased embryo frequency a nd green plant regeneration. (2) Both F, hybrids showed a decrease in embryo frequency. One of the F-1 hybrids, S29 (Lr19 + Rht1)/S29 (Ppd1 + Ppd2) showed a decrease, with respect to S29 for green plant regener ation; the other F-1, S29 (Pro1 + Pro2)/S29 (Lr19 + Rht1), equalled S2 9 for green plant regeneration. (3) The gene complex of the F-1 hybrid S29 (Pro1 + Pro2)/S29 (Lr19 + Rht1) was better than that of the F-1 h ybrid S29 (Li19+Rht1)/S29 (Ppd1 + Ppd2) for embryo induction and green plant regeneration. This effect was possibly induced by interactions between the Pro1 + Pro2 and Lr19 + Rht1 genes or was the result of dir ect actions of the Pro1 + Pro2 genes.