Comparison of esterase isoenzyme patterns in seeds of someAllium species and in cultivars ofAllium cepa L

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Abstract
Esterase isoenzyme patterns were studied in seeds of 6 cultivars ofAllium cepa L. and of14 species ofAllium, namelyAllium aflatunense B. Fedtsch.,A. altaicum (Pall.) Reyse,A. Cristophii Trautv.,A. fistulosum L.,A. jajlae Vved.,A. Karsianum Fom.,A. nutans L.,A. porrum L. cv. Gigant,A. praemixtum Vved.,A. pskemense Vved.,A. ramosum L.,A.rotundum L.,A. schoenoprasum L.,A. stipitatum Regel. The cultivars differ in their isoenzyme patterns, the cultivar Kaštická stands apart from all the other cultivars, probably due to the high alkalinity of its seed extract. The examined species, arranged according to their mutual similarity of isoenzyme patterns, form several groups corresponding to individual sections of the genus. Our results corroborate the recognizing of the sectionCepa and the subsectionPhyllodolon. The maintaining ofA. jajlae andA. rotundum as well described species fits better with our results, than degrading them to subspecies ofA. scorodoprason. Our results agree in main features with those obtained by the immunological method. Some few differences appear concerning individual species. It is evident that esterase isoenzyme patterns can be used in chemotaxonomy ofAllium on an infrageneric level, and, at least inA. cepa, also on an infraspecific level.