International Journal of Industrial Entomology and Biomaterials

Korean Society of Sericultural Science (한국잠사학회)
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Estimation of Hybrid Vigor of Some Egyptian Single Local Hybrids of Mulberry Silkworm, Bombyx mori L.

  • Received : 2012.03.15
  • Accepted : 2012.11.02
  • Published : 2012.12.31
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Abstract

Fifteen races resulted from silkworm breeding program at Sericulture Research Department (SRD) were used for hybridization. Fourteen hybrids were obtained and coded as; Giza C, D, R, S, T, U, A, V, W, P, H, L and Qanater 1, 2. The traits of cocoon weight, cocoon shell weight, pupal weight, cocoon shell ratio, silk productivity, fifth instar duration, total larval duration, number of cocoon per liter and pupation ratio were evaluated. Data were analyzed by using three formulae of heterosis over better, mid and check parent values. Hybrids of Giza V, C, N, Qanater 1 and 2 are promising and could be used in commercial cocoon production. Generally, there are some new hybrids can be exploited in commercial scale. Also, the local races can be evolved using the hybridization, inbreeding and selection program.

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References

  1. Anonymous (1993) Principles and techniques of silkworm breeding. United Nations 1.
  2. Eid MAA, El-Maasrawy SAS, Hosny A, Ghazy UMM (2002). Combining ability in Silkworm Bombyx mori L. XIXth Congress of the international Sericultural Commission 97-103.
  3. Eid MAA, El-Maasrawy SAS, Hosny A, Ghazy UMM (2005). Combining ability estimates in the silkworm, Bombyx mori for larval and cocoon traits. Sericologia 45(2), 127-132.
  4. Ghazy UMM (2008) Rearing first three instars of mulberry silkworm Bombyx mori L. under polythene cover. Bull. Ent. Soc. Egypt 85, 271-279.
  5. Ghazy UMM (2007) Manifestation of Hybrid Vigour in Different Crosses of the Silkworm, Bombyx mori L. (Proc. 2nd Inter. Conf. Ent. Soc. Egypt vol(1), 175-183.
  6. Ghazy UMM, Fouda MM (2006) Evaluation of four local simple hybrids of silkworm Bobmyx mori L. Bull Ent Soc Egypt 83, 191-199.
  7. Ghazy UMM, Saad IAI, Fouad TA (2009). Comparison between some local and imported bulgarian hybrids of silkworm Bombyx mori L. Bull Ent Soc Egypt 86, 101-107.
  8. Harada C (1956) On the relation between commercial characters and their F1 hybrids in Bombyx mori. Proc. Int. Genet. Symp 252-356.
  9. Rajalakshmi E, Chauhan TPS, Kamble CK (1998) Hybrid vigour among newly evolved bivoltine hybrids of silkworm Bombyx mori under Hill conditions. Indian J Agric Sci 68(9), 620-624.
  10. Raju PJ, Krishnamurthy NB (1993) Breeding of two bivoltines, MG 511 and MG 512, of silkworm Bombyx mori L. for higher viability and silk productivity. Sericologia 33, 577-587.
  11. Rao PS, Rekha M, Nishitha NV, Pallavi SN, Mahalingappa KC (2002) Hybrid vigour in polyvoltine X bivoltine (sex-limited cocoon colour) hybrid of silkworm Bombyx mori L. Int J Indust Entomol 4(1), 37-41.
  12. Singh R, Rao DR, Kariappa BK, Sanyal P, Premalatha V (2002a) Studies on parthenogenetic development, hybrid vigour and cocoon shape variability in bivoltine F1 hybrids of silkworm, Bombyx mori L. Int J Indust Entomol 5(1), 59-65.
  13. Singh T, Saratchandra B, Murthy GN (2002b) An analysis of heterosis in the silkworm, Bombyx mori L. Int J Indust Entomol 5(1), 23-32.
  14. Yokoyama T (1956): On the application of heterosis in Japanese sericulture. Proc Int Genet Symp 527-531.

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