Abstract
AbstractThe diploid hybrid Hordeum californicum×Secale vavilovii and the tetraploid hybrid H. parodii× S. anatolicum, were obtained through embryo rescue techniques at relative frequencies of 0.70 and 5.3 % of pollinated florets, respectively. Means of 11.741+ 1.1311 per cell at metaphase I of meiosis were obtained in the diploid hybrid and 14.741+ 6.3l11+ 0.22111+ 0.02IV in the tetraploid hybrid with a maximum of 6.01+ 4.011 and 9.011+2.0111+ 1.0IV respectively. In the diploid hybrid there was preponderance of intragenomic pairing (86.7 %). Increased pairing in the tetraploid hybrid was attributed to autosyndesis among Hordeum chromosomes.
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