A preliminary research of genetic linkage map construction and QTL analysis for growthrelated traits in yellow catfish (Pelteobagrus fulvidraco)
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    Abstract:

    Genetic linkage maps of yellow catfish (Pelteobagrus fulvidraco) were constructed using SSR, SRAP and TRAP markers and a pseudotestcross mapping strategy. A segregating population including 100 progenies was sampled within the first filial generation obtained by artificial fertilization between a male parent and a female parent from wild and breeding populations respectively. Totally, 13 SSR, 89 SRAP and 26 TRAP markers were used to construct a genetic map. Female map included 16 linkage groups, covering a total of 585.5 cM in length. Male map included 15 linkage groups, covering a total of 752.3 cM in length. Combined map included 5 linkage groups, covering a total of 231.3 cM in length. This map was used to scan the QTL related to growth traits of yellow catfish. One head length QTLs were identified in female map located in LG7, LOD value is 3.2 and accounted for 13 % of phenotypic variation. A body width and a body length QTLs were identified in male map both located in LG1, LOD value is 2.4 and 2.1 respectively, and accounted for 12% and 11% of phenotypic variation respectively. Three QTLs could be considered to apply in markerassisted selection for growthrelated traits breeding of yellow catfish.

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GE Xueliang, YIN Hongbin, BI Bing, SUN Zhongwu. A preliminary research of genetic linkage map construction and QTL analysis for growthrelated traits in yellow catfish (Pelteobagrus fulvidraco)[J]. Journal of Fisheries of China,2010,34(2):185~193

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History
  • Received:August 05,2009
  • Revised:November 09,2009
  • Adopted:November 30,2009
  • Online: February 08,2010
  • Published: February 15,2010
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