The Comparative Study on the Performance of Iranian and Chinese Silkworms, Bombyx mori L, Hybrids in Khorasan Razavi Province

Subject Areas : Journal of Animal Biology

Masoud Alipanah ¹ , Abdolazim Nasiri ² , Atefeh Seyeddokht ³ , Shahla Nematolahian ⁴ , Zabiholah Abedian ⁵ , Farid Sarjamei ⁶

1 - Department of Plant Production, University of Torbath Heydarieh, Torbath Heydarieh, Iran
2 - Khorasan Razavi Sericulture Development Center, Torbat Heydarieh, Iran
3 - Assistant professor, Animal Science Research Department, Khorasan Razavi Agricultural and Natural Resources Research and Education Center, AREEO, Mashhad, Iran
4 - Iran Silk Research Center, Rasht, Gilan Province, Iran
5 - Noghangostar Torbat co, Torbat Heydarieh, Razavi Khorasan Province, Iran
6 - Noghangostar Torbat co, Torbat Heydarieh, Razavi Khorasan Province, Iran

Received: 2022-12-15 Accepted : 2023-02-14 Published : 2023-11-22

Keywords: Cocoon shell, Cocoon, Sericulture, Chinese hybrid, pupa,

Abstract :

Silkworm rearing has been intermingled with the life and culture of the Khorasan Razavi people for a long time. This study was conducted to determine robust hybrids for economically important traits in mulberry silkworm Bombyx mori under numerous climatic conditions. To identify the most suitable hybrid for Khorasan Razavi climatic conditions, 14 imported hybrids were compared with four Iranian local hybrids. In the spring of 2021, rearing was carried out under uniformed laboratory condition by adopting standard method. The experiment was laid out in Completely Randomized Design (CRD) with four replications and 200 larvae per replication using procedure of GLM in SAS 9.2 in the Torbat Heydarieh sericulture center (Torbat Heydarieh, Iran). These eighteen hybrids were evaluated for their performance in eight metric traits viz., larval losses, percentage of pupae, percentage of cocoons (good, medium, weak and double), weight of cocoons (good, medium, weak and double), number per liter, weight of one liter, weight of cocoon cortex, percentage of cocoon cortex and percentage of raw silk. The results showed that Chines hybrid Q×B had higher cocoon weight with 339.57 gr (P <0.05). Also, L2×R had higher shell cocoon perecent with 24.36%  (P <0.05) and L2×OR showed higher average mean of cocoon wight with 1.72 gr (P <0.05). The result of the present study indicated that six hybrids viz., 872 × 871, B × Q, BB × QA, HB × JA, JA × HB, and M × S exhibited better performance in imported Chinese hybrids, and three Iranians hybrids viz., 103 × 104, 151 × 154, 154 × 151 had better performance in Torbat Heydariyeh region of Khorasan Razavi province.

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