A COMPARISON OF 2 HAPLODIPLOIDIZATION MET HODS IN BREAD WHEAT - ANTHER CULTURE AND INTERSPECIFIC HYBRIDIZATION IN MAIZE

The production in green plants per ear, from 60 F1 plants correspondin g to 5 crosses and 109 F3 plants corresponding to 6 crosses (table I), appeared similar for in vitro androgenesis and hybridization between wheat and maize. However, these 2 haplodiploidization processes were r ather different. the production of embryos per ear was higher with and rogenesis, but the regeneration was better with interspecific hybridiz ation (fig 1, table I). There was a marked genotypic effect for the 2 methods, but the results obtained with androgenesis and crosses betwee n wheat and maize were not correlated. some genotypes which had poor r esults with one of the methods provided good results with the other me thod, which is of interest for the introduction of haplodiploidization in breeding schemes. The work required to obtain a doubled-haploid li ne was equivalent for the 2 methods.