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- W2000767617 abstract "Isozyme variability was examined in 13 geographically isolated populations of the endemic arctic hairy lousewort ( Pedicularis dasyantha ) in the Svalbard Archipelago, 80° N latitude, Norway. Of the 23 enzyme systems screened on five buffer systems 18 were interpretable. Of the 31 reliable loci, only 6‐phosphogluconate dehydrogenase ( 6‐Pgd ), was polymorphic. However, no heterozygotes were detected. Frequencies for allele 1 among the populations varied from 1.00 in the north to 0.00 in the south and 0.53 in the central “overlap” region. At the species level the mean number of alleles per locus ( A ) was 1.03. Percentage of polymorphic loci ( P ) was 3%. Expected heterozygosity ( H e ) was 0.016. At the population level the mean number of alleles per locus was 1.01, and 1.1% of the loci were polymorphic. H e was 0.004. These values are low compared to endemic, widespread, selling, and outcrossed species. Flower color morphs were distinct. They varied within and among the 13 populations. The frequency of color morphs coincided with allele frequencies of 6‐PGD: allele 1 was found in dark purple morphs, and allele 2 was found in light morphs. This species shows more isozyme genetic variability than the five other species reported in the genus but generally less variation than other species with limited regional distributions. Low‐level genetic variation in this diploid species may be a result of colonization events coupled with genetic drift, founder effects, and strong natural selection. Additional factors include the self‐compatible reproductive system and the long‐lived perennial habit." @default.
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- W2000767617 date "1996-11-01" @default.
- W2000767617 modified "2023-10-05" @default.
- W2000767617 title "Genetic variation in populations of the arctic perennial<i>Pedicularis dasyantha</i>(Scrophulariaceae), on Svalbard, Norway" @default.
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- W2000767617 doi "https://doi.org/10.1002/j.1537-2197.1996.tb13931.x" @default.
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