TAILIEUCHUNG - Báo cáo sinh học: "Biodiversity of pig breeds from China and Europe estimated from pooled DNA samples: differences in microsatellite variation between two areas of domestication"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học thế giới đề tài: Biodiversity of pig breeds from China and Europe estimated from pooled DNA samples: differences in microsatellite variation between two areas of domestication | Genet. Sel. Evol. 40 2008 103-128 INRA EDP Sciences 2008 DOI gse 2007039 Available online at Original article Biodiversity of pig breeds from China and Europe estimated from pooled DNA samples differences in microsatellite variation between two areas of domestication Hendrik-Jan MEGENS1 Richard . Crooijmans1 Magali San Cristobal2 Xiao Hui3 Ning Li3 Martien . GROENEN1 1 Wageningen University Animal Breeding and Genomics Centre PO Box 338 6700AH Wageningen The Netherlands 2 INRA UMR444 Laboratoire de génétique cellulaire 31326 Castanet Tolosan France 3 China Agricultural University National Laboratories for Agrobiotechnology Yuanmingyuan West Road 2 Haidian District 100094 Beijing . China Received 24 July 2006 accepted 18 July 2007 Abstract - Microsatellite diversity in European and Chinese pigs was assessed using a pooled sampling method on 52 European and 46 Chinese pig populations. A Neighbor Joining analysis on genetic distances revealed that European breeds were grouped together and showed little evidence for geographic structure although a southern European and English group could tentatively be assigned. Populations from international breeds formed breed specific clusters. The Chinese breeds formed a second major group with the Sino-European synthetic Tia Meslan in-between the two large clusters. Within Chinese breeds in contrast to the European pigs a large degree of geographic structure was noted in line with previous classification schemes for Chinese pigs that were based on morphology and geography. The Northern Chinese breeds were most similar to the European breeds. Although some overlap exists Chinese breeds showed a higher average degree of heterozygosity and genetic distance compared to European ones. Between breed diversity was even more pronounced and was the highest in the Central Chinese pigs reflecting the geographically central position in China. Comparing correlations between genetic distance and .

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