Allelic and genotypic variation of 13 European beech (Fagus sylvatica L.) - populations in Hesse, Germany
2001
Sander, T. | Rothe, G.M. (Johannes Gutenberg-Universitat, Mainz (Germany). Institut fur Allegemeine Botanik) | Weisgerber, H. | Janssen, A.
Allelic and genotypic variation at seven different enzyme loci of European beech (Fagus sylvatica L.) was investigated in 13 108-160-years-old stands growing in 9 different growing areas in Hesse in central Germany. At the loci Aat-C, Acp-D, Acp-F, Dia-B, Idh-A, Lap-A and Per-D 18 alleles and 34 genotypes were quantified. The rare allele B1 at locus Dia-B was observed in only 5 of 13 stands, the rare allele A1 at locus Lap-A was missing in one stand. The effective number of alleles (Ne) varied little from stand to stand, maximum Ne-values per gene locus were stand dependent. The genetic identity of the 13 stands was high, I = 99.27%. Values of subpopulation differentiation ranged from Dj = 0.025-0.073. The 13 stands can be clustered to five groups according to their genetic distances do-total; grouping is stand dependent but independent on the growing area in which the stands occur. Values of expected heterozygosity varied from HI = 5.82% at locus Dia-B to 70.92% at locus Lap-A. However, heterozygosities varied little from stand to stand (He = 36.98 to 41.58%). Of the 78 possible pairs of stands, 49 pairs (62.82%) showed different genotype frequencies at a total of 12 genotypes. Comparing genotype frequencies in one stand with those of the 12 remaining stands showed that 10 out of 13 stands (76.92%) differed in at least one genotype. Enlarging the number of investigated enzyme loci would probably allow to differentiate all stands
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