EXPERIMENTS ON HAPLOID PRODUCTION FROM TETRAPLOID TRITICALES BY THE HORDEUM-BULBOSUM SYSTEM AND ANTHER CULTURE

Attempts were made to produce doubled haploids in three types of tetraploid triticale. The Hordeum bulbosum system and anther culture were applied to triticale types with the genome constitutions (AB)(AB)RR and DDRR and to F1 hybrids of these two types. Triticale DDRR were selected lines from hybrids of Triticum tauschii and Secale cereale. Twenty-three different combinations of tetraploid triticale lines and Hordeum bulbosum were crossed. Six combinations resulted in low seed set, but the seeds stopped their development in an early stage and a rescue of the embryos by embryo culture was not possible. The experiments with anther culture resulted in some green plants. It could be shown that anther culture technique is applicable to tetraploid triticale. The experiments with anther culture resulted in some green plants. It could be shown that anther culture technique is applicable to tetraploid triticale.