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Articles by Ji Ting
Total Records ( 3 ) for Ji Ting
  Ji Ting , Yin Ling , Liu Min , Bao Wen-bin and Chen Guo-hong
  Analysing genetic diversity of Apis cerana cerana and Apis mellifera ligustica in China could provide a theoretical foundation for the research on the conservation and reasonable utilization of honey bee populations, but there have not public reports on this topic by using microsatellite markers until now. Genetic diversity of Changbaishan bee (Apis cerana cerana) and Pinghu royal jelly bee (Apis mellifera ligustica) in China were evaluated with 21 microstaellite loci, the genetic variability within breeds and genetic differentiation between breeds were estimated, the results showed that in 21 microstaellite loci, 171 alleles were found, the number of alleles per locus ranged from 3-13, the average expected heterozygosity and PIC of all loci were 0.7175 and 0.6755, respectively. Mean numbers of alleles of Changbaishan bee and Pinghu royal jelly bee were 1.86 and 6.27, the average of genetic differentiation measured as FST value, was 51.9% (p<0.001) and all loci contributed significantly (p<0.001) to this differentiation. It can also, be seen that the deficit of heterozygotes was very high (0.574) (p<0.001). Reynolds’ distance values between 2 populations were 0.734.
  Yin Ling , Ji Ting , Liu Min , Bao Wen-Bin and Chen Guo-Hong
  Genetic diversity and the relationship between genetic distance and geographical distance of 6 Apis cerana cerana populations in China were evaluated with 11 microstaellite loci, the results showed that the number of alleles per locus ranged from 7-21, the average expected heterozygosity and PIC of all loci were 0.7339 and 0.7082, respectively. Average number of alleles/locus was ranged from 2.3636 in Guangxi bee and Jiling bee to 6.4545 in Zhejiang bee. The overall expected heterozygosity of 6 Apis cerana cerana populations was 0.7339±0.0344, all populations showed relative large heterozygosity. In the whole population, the average of genetic differentiation among population was 32.4% (p<0.001). The geographical elements may own to the close relationship for particular population pairs, however, the equation FST/(1-FST) = -1.5904 + 1.0604 ln (d) and the result from Mantel’s test (p = 0.130) did not provide enough support for a significant correlation between the genetic and geographical pair wise distances.
  Ji Ting , Yin Ling , Liu Min , Bao Wen-Bin and Chen Guo-Hong
  Genetic diversity of Pinghu royal jelly bee (higher royal jelly producing bee) and Suwang No.1 bee (lower royal jelly producing bee) were evaluated with 23 microstaellite loci, the genetic variability within breeds and genetic differentiation between breeds were estimated, the results showed that in 23 microstaellite loci, 211 alleles were found, the number of alleles per locus ranged from 3-14, the average expected heterozygosity and PIC of all loci were 0.6894 and 0.6560, respectively. Mean numbers of alleles of Pinghu royal jelly bee and Suwang No.1 bee were 6.65 and 6.13, inbreeding index (FST), Reynolds' genetic distance and gene flow between two populations were 0.194, 0.2146 and 1.0447, respectively, these results indicated that the heterozygosity and the genetic diversity of 2 bee populations were very high.
 
 
 
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