Changes Induced by Zinic Smelter Pollution in the Genetic Structure of Pine (Pinus sylvestris L.) Seedling Populations

1991

S. 184-187

2 Abb.,7 Tab.

Unselbständiges Werk

200051323

Silvae Genetica 1991 ; 40,Nr. 5-6, S. 184-187

Comparison of the genetic structure of a seedling population grown in an unpolluted area and in an area adjancent to a zinc smelter has demonstrated differences. When seedlings of Pinus sylvestris were grown in the polluted area both heterozygosity and degree of genetic polymorphism underwent a significant decrease (by 30% and 20%, respectively) compared to from the control in the unpolluted area. For studied enzymatic loci the seedling population grown on the polluted site failed to maintain Hardy-Weinberg equilibrium, exhibiting an excess of homozygotes compared to expected levels. The changes in genetic parameters point to directional selective processes in the studied seedlings groups.