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| Liu,Yan-Qun; Qin,Li; li,Yu-Ping; Wang,Huan; Xia,Run-Xi; Qi,Yong-Hong; li,Xi-Sheng; Lu,Cheng; Xiang,Zhong-Huai. |
| The genetic diversity and genetic structure of three Chinese silkworm species Bombyx mori L., Antheraea pernyi Guérin-Meneville and Samia cynthia ricini Donovan were comparatively assessed based on RAPD markers. At the species level, A. pernyi and B. mori showed high levels of genetic diversity, whereas S. cynthia ricini showed low level of genetic diversity. However, at the strain level, A. pernyi had relatively highest genetic diversity and B. mori had lowest genetic diversity. Analysis of molecular variance (AMOVA) suggested that 60% and 72% of genetic variation resided within strains in A. pernyi and S. cynthia ricini, respectively, whereas only 16% of genetic variation occurred within strains in B. mori. In UPGMA dendrogram, individuals of A. pernyi... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: RAPD; Genetic variation; AMOVA; Dendrogram. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600019 |
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| Li,Yu-Ping; Song,Wu; Shi,Sheng-Lin; Liu,Yan-Qun; Pan,Min-Hui; Dai,Fang-Yin; Lu,Cheng; Xiang,Zhong-Huai. |
| Bombyx mori and Bombyx mandarina are morphologically and physiologically similar. In this study, we compared the nucleotide variations in the complete mitochondrial (mt) genomes between the domesticated silkmoth, B. mori, and its wild ancestors, Chinese B. mandarina (ChBm) and Japanese B. mandarina (JaBm). The sequence divergence and transition mutation ratio between B. mori and ChBm are significantly smaller than those observed between B. mori and JaBm. The preference of transition by DNA strands between B. mori and ChBm is consistent with that between B. mori and JaBm, however, the regional variation in nucleotide substitution rate shows a different feature. These results suggest that the ChBm mt genome is not undergoing the same evolutionary process as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nucleotide substitution pattern; Mitochondrial genome; Bombyx mori; Chinese Bombyx mandarina; Japanese Bombyx mandarina. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000100031 |
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