| RRC ID |
57043
|
| Author |
Ishikawa H., Hirano T., Kiriyama C, Okuno,T., Jounai M., Takeuchi S., Sobue Y., Jitsukawa M., Sakurai K. and Kajiura Z.
|
| Title |
Studies of breeding large Anthreaea yamamai by backcross.
|
| Journal |
Journal of Silk Science and Technology of Japan
|
| Abstract |
Backcross of Japanese oak silkmoth Antheraea yamamai (A. yamamai) was undertaken to breed a strain with greater silk production capacity by hybridizing a strain showing a high fertilization rate (SUB-52) and a strain showing heavy cocoon weight (SUB-11). By repeating backcross from 2010 to 2018, we obtained and stored backcross strain (Bn; n represents the number of generations) from third generation (B3) to seventh generation (B7). Comparing SUB-52, SUB-11 and each Bn by statistic method showed that B6 was superior to other strains in terms of silk productivity. Although cocoon weight and cocoon shell weight in the latest backcross strain B7 was significantly higher than that of SUB-52, there was no significant difference between B7 and their recurrent parent SUB-11. We consider that B7 was getting closer to SUB-11 and appropriate backcross should be limited until B6. As for future research, we plan to improve the fertilization rate by using Bn for hybridization.
|
| Volume |
27
|
| Pages |
15-22
|
| Published |
2019-3-12
|
| DOI |
10.11417/silk.27.15
|
| Resource |
| Silkworms |
A. yamamai |
