Hybridization between tetraploid allorye and hexaploid triticale
2000
Stoinova,J.
Low crossing affinity between alloplasmic rye forms and hexaploid triticale forms-0.91% on average was reported.The F1 hybrids were of very low fertility from 0.33 to 4.25 grains per spike.These characteristics were due to meiotic disturbances-univalents and trivalents in diakinesis and metaphase I as well as micronuclei at tetrad stage.A stabilized tetraploid triticale form characterized by good fertility-over 42 grains per spike was selected in the segregating generation.Such hybrids showed to hold 14 rye and 14 wheat chromosomes.The following wheat chromosomes were present:1B, 2B, 3B, 4A, 5A, 6A, 7B.
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