Allozyme Analysis of Genetic Diversity and Differentiation in European and Asiatic Walnut (Juglans Regia L.) Populations. Fornari, B., Cannata, F., Spadad, M., & Malvolti, M. E. Forest Genetics, 6(2):115–127, 1999.
abstract   bibtex   
Genetic structure of 12 anthropised European and 3 natural and naturalised Asiatic populations of walnut (Juglans regia L.) was investigated by means of starch gel electrophoresis for 15 enzyme systems. Population genetic parameters and statistics show overall levels of genetic diversity and differentiation lower in Juglans regia than in other widespread plant species, outlining a significant amount of genetic erosion suffered by this species, mainly in Europe. The levels of differentiation among European and Asiatic populations, higher than those among European populations, support the thesis of a native origin of European walnut in postglacial times. The closeness to the HW equilibrium and the high levels of heterozygosity and intrapopulation differentiation, found in all the populations, show the capability of the species to avoid self-pollination and inbreeding. The occurrence of some different alleles among European and Asiatic populations provides an interesting item for programs of recovering and conservation of the genetic variability in this endangered widespread species.
@article{fornariAllozymeAnalysisGenetic1999,
  title = {Allozyme Analysis of Genetic Diversity and Differentiation in {{European}} and {{Asiatic}} Walnut ({{Juglans}} Regia {{L}}.) Populations},
  author = {Fornari, B. and Cannata, F. and Spadad, M. and Malvolti, M. E.},
  year = {1999},
  volume = {6},
  pages = {115--127},
  abstract = {Genetic structure of 12 anthropised European and 3 natural and naturalised Asiatic populations of walnut (Juglans regia L.) was investigated by means of starch gel electrophoresis for 15 enzyme systems. Population genetic parameters and statistics show overall levels of genetic diversity and differentiation lower in Juglans regia than in other widespread plant species, outlining a significant amount of genetic erosion suffered by this species, mainly in Europe. The levels of differentiation among European and Asiatic populations, higher than those among European populations, support the thesis of a native origin of European walnut in postglacial times. The closeness to the HW equilibrium and the high levels of heterozygosity and intrapopulation differentiation, found in all the populations, show the capability of the species to avoid self-pollination and inbreeding. The occurrence of some different alleles among European and Asiatic populations provides an interesting item for programs of recovering and conservation of the genetic variability in this endangered widespread species.},
  journal = {Forest Genetics},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13576844,conservation,genetic-differentiation,genetic-diversity,isozymes,juglans-regia,widespread-plant-species},
  lccn = {INRMM-MiD:c-13576844},
  number = {2}
}

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