title: [High level of polymorphism and autotetraploid origin of rare endemic species of Fabaceae, Oxytropis chankaensis Jurtz., inferred from allozyme data].
abstract: Using starch electrophoresis, we examined 19 enzyme systems presumably controlled by 35 loci in the rare endemic tetraploid species Oxytropis chankaensis Jurtz. (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%, Ap = 3.06, Hob = 0.173.
authors.affiliation: Institute of Biology and Soil Science, Russian Academy of Sciences, Vladivostok, 690022 Russia. kholina@ibss.dvo.ru
authors.forename: A B
authors.initials: AB
authors.lastname: Kholina
authors.forename: O G
authors.initials: OG
authors.lastname: Koren'
authors.forename: Iu N
authors.initials: IuN
authors.lastname: Zhuravlev
mesh_terms: D000483:Alleles; D004592:Electrophoresis, Starch Gel; D004798:Enzymes / Q000235:genetics*; D007887:Fabaceae / Q000201:enzymology / Q000235:genetics*; D011110:Polymorphism, Genetic; D011123:Polyploidy
chemical_list: D004798:Enzymes