INHERITANCE OF ISOENZYMES IN EUROPEAN BEECH (FAGUS-SYLVATICA L)

Segregation of isoenzymes was studied among 34 full-sib families of Fa gus sylvatica L. by means of gel electrophoresis. Of the 16 enzyme sys tems analyzed, two showed substantial tissue-specific expression of is oenzymes. The remaining 14 enzyme systems are controlled genetically b y at least 20 polymorphic gene loci, three of which were inferred from additional population studies. The inheritance of the complex system of 6PGDH is studied in detail. A 20-locus nomenclature is suggested, i ncluding 78 codominant alleles. Analyses of two-locus combinations did not reveal linkage between any of the tested gene loci.