Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế, đề tài: "Genetic inventory of European oak populations: consequences for breeding and gene conservation. | Ann Sci For 1996 53 783-793 Elsevier INRA 783 Original article Genetic inventory of European oak populations consequences for breeding and gene conservation s Herzog Abteilung fur Forstgenetik und Forstpflanzenzuchtung Georg-August-Universitãt BOsgenweg 2 37077 Gottingen Germany Received 6 September 1994 accepted 18 July 1995 Summary The objective of the present study was to characterize the genetic variation in pedunculate oak and sessile oak populations on the basis of isoenzyme markers and to perform a genetic inventory of European oak populations. The results are discussed with special respect to forest tree breeding and conservation of genetic resources. Previous results on oak genetics summarized in the present paper are also discussed. The results reveal a relatively high genetic variation among individuals in terms of actual heterozygosities compared to other plant species. In addition intrapopulational variation is large. Genetic differentiation among populations of each species is relatively small in general with certain exceptions. In contrast to earlier results which suggest smaller differentiation values for pen-dunculate oak as compared to sessile oak the present results indicate an opposite trend. The results presented herein suggest that forest tree breeding and silviculture of sessile and pedunculate oak need to take into account large genetic multiplicities. It seems improbable that we can find single stands representing the whole or nearly the whole genetic variation of the species. This would call for a management which is focused on the in situ maintenance of numerous and sufficiently large locally adapted stands. oak isoenzyme genetic variation gene conservation breeding Resume Inventaire génétique de populations de chênes européens consequences pour la selection et la conservation de la diversite. L objectif de la présente étude étaitde caractériser la variabilité génétique des chênes sessiles et pédonculés sur la base d une étude de .
