Abstract
Summary Data from electrophoretic analysis of alcohol dehydrogenase-1 (ADH-1, EC 1.1.1.1) in seeds of five tetraploid triticale forms containing two complete rye genomes and one wheat complement which consists of chromosome pairs belonging to the A and B genomes of wheat, of their parental forms (hexaploid triticale, AABBRR, and tetraploid rye, Secale cereale , RRRR); Triticum aestivum , AABBDD; Triticum durum , AABB; Triticum monococcum , AA; and Aegilops speltoides , BB, have substantiated the conclusion that ADH-1 isozyme spectra in tetraploid triticale seeds can be used in proving the presence of ADH-1 structural genes of chromosomes 4A and/or 4B in their wheat genomes. Quantitative ratios between the staining intensities of ADH-1 isozymes in spectra of hexaploid and tetraploid triticales are in correspondence to the presumptionn that ADH-1 subunits coded by wheat chromosomes (4A and 4B) are produced in equal quantities which are two times higher than those of ADH4 subunits coded by rye chromosomes.
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