[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: A B Kholina, O G Koren', Iu N Zhuravlev
• Journal: Genetika (Genetika) Vol. 40 Issue 4 Pg. 497-505 (Apr 2004) ISSN: 0016-6758 [Print] Russia (Federation)
• Vernacular Title: Vysokiĭ uroven' polimorfiszma i avtotetrapolidnoe proiskhozhednie redkogo éndemicheskogo vida ostrolodochnika khankaĭskogo Oxytropis chankaensis Jurtz. (Fabaceae): dannye allozimnogo analiza.
• PMID: 15174283 (Publication Type: English Abstract, Journal Article)

Chemical References

• Enzymes

Topics

• Alleles
• Electrophoresis, Starch Gel
• Enzymes (genetics)
• Fabaceae (enzymology, genetics)
• Polymorphism, Genetic
• Polyploidy