GENETIC-CONTROL OF ISOZYMES IN SCOTS PINE (PINUS-SYLVESTRIS L) FROM ZAURALE

Genetic control of 14 enzyme systems was studied in seeds of Scots pin e from a Zaural'e natural population. Electrophoretic separation for a llele products of 24 loci was obtained. Loci Acp, Adh-1, Adh-2, Fe, Gd h, Got-2, Got-3, Lap-2, Mdh-2, Mdh-3, Pgi-2, Pgm-1 Skdh-1, Skdh-2, 6-P gd-1, 6-Pgd-2, and Fdh were polymorphic, whereas loci ldh, Pgi-1, and Pgi-2, were monomorphic. At loci Cat, Got-1, Lap-1, and Mdh-1, rare al leles were detected. A modifier gene for malate dehydrogenase (Mdh-m) was found. Forty-five out of 49 heterozygotes showed segregation ratio s conforming to those expected for Mendelian loci 1:1). The results ob tained were compared to published data on genetic control of the above isozyme systems in Scots pine from other parts of the range.