Using starch electrophoresis, we examined 19 enzyme systems presumably controlled by 35 loci in the rare endemic tetraploid speciesOxytropis chankaensisJurtz. (Fabaceae). Electrophoretic patterns and their genetic interpretation are presented. The isozyme data suggest tetrasomic inheritance in O. chankaensis. Three or four alleles at a particular locus were found in a number of individual plants, which indicate the autotetraploid origin of this species. Seventeen loci were shown to be polymorphic. As reliable gene markers for population systems, we recommend highly active polymorphic systems showing good allozyme separation (Ce-2, Gpi-2, Gpt-2, Idh-2, Lap, Mdh-2, and Mdh-3). Parameters of allozyme variability proved to be very high for a rare species with a restricted range: P = 48.6%, A = 2, A p = 3.06, H ob = 0.173.
Russian Journal of Genetics – Springer Journals
Published: Oct 18, 2004
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