DOI QR코드

DOI QR Code

Evaluation and Identification of Promising Bivoltine Double Hybrids of the Silkworm Bombyx mori L. for Tropics Through Large Scale In-House Testing

  • Received : 2011.08.11
  • Accepted : 2011.11.22
  • Published : 2011.12.31

Abstract

An attempt was made to assess the potentiality of bivoltine double hybrids under simulated conditions of farmers to identify the suitable bivoltine double hybrid combination. Four bivoltine double hybrids developed at Central Sericultural Research and Training Institute (CSRTI), Mysore along with popular single hybrid, $CSR2{\times}CSR4$ as control was assessed for economic traits. The rearing results showed significant improvement of 20-24% in fecundity of the double hybrids studied over single hybrid. Among the double hybrids, $[D7{\times}S5]{\times}[D13{\times}S1]$ recorded significantly higher survival (89.58 %), cocoon yield (76.328 kg/ 50,000 eggs), cocoon price (Rs. 180.87/kg) and lower cocoon leaf ratio of 1: 21.80. The performance of the reeling traits were also found significantly superior in $[D7{\times}S5]{\times}[D13{\times}S1]$ with higher filament length (1100 m), reelability (88%), raw silk (18.55%) and neatness (92 points) compared to $CSR2{\times}CSR4$ and other double hybrids evaluated. Besides, the cocoons of $[D7{\times}S5]{\times}[D13{\times}S1]$ exhibit uniformity in size with a standard deviation of < 8. Overall data indicated the superiority of $[D7{\times}S5]{\times}[D13{\times}S1]$ compared to the other hybrids evaluated and it has profound influence in expressing the full potentiality in the field.

Keywords

References

  1. Basavaraja HK, Nirmal Kumar S, Suresh Kumar N, Mal Reddy N, Kshama Giridhar, Ahsan MM, Datta RK (1995) New productive bivoltine hybrids. Indian Silk 34, 5-9.
  2. Dayananda (2010) Studies on the performance and economic appraisal of new hybrids of the silkworm Bombyx mori L. through validation and demonstration. Ph. D Thesis, Mysore University, Mysore, India.
  3. Joge PG, Pallavi SN, Noseema Begum A, Mahalingappa KC, Mallikarjuna, Dandin SB (2003) Evaluation of double hybrids of silkworm Bombyx mori L. in the field; in Advances in Tropical sericulture. Dandin SB, Mishra RK, Gupta VP, Reddy YS (eds), pp. 102-104, NASSI, Bangalore.
  4. Krishnaswamy S (1990) what ails our bivoltine silk production Programme? Indian Silk 29 (1), 6-14.
  5. Mahalingappa KC, Pallavi SN, Naseema Begum A, Joge PG, Malikarjuna, Sabitha N (2003) Studies on egg yield in double hybrids of bivoltine silkworm Bombyx mori L.; in Advances in Tropical sericulture. Dandin SB, Mishra RK, Gupta VP, Reddy YS (eds), pp. 93-95, NASSI, Bangalore.
  6. Mal Reddy N, Basavaraja HK, Suresh Kumar N, Nirmal Kumar S, Kalpana GV (2003) Breeding of Bivoltine double hybrid (CSR6 ${\times}$ CSR26) ${\times}$ (CSR2 ${\times}$ CSR27) of Silkworm, Bombyx mori L. for commercial exploitation; in Advances in Tropical sericulture. Dandin SB, Mishra RK, Gupta VP, Reddy YS (eds), pp. 58-62, NASSI, Bangalore.
  7. Mano Y (1994) Comprehensive report on silkworm breeding. Central Silk Board, Bangalore, India, p.180.
  8. Mano Y, Nirmal Kumar S, Basavaraja HK, Mal Reddy N, Datta RK (1994) A new method to select promising silkworm breeds/ combinations. Indian Silk 31, 53.
  9. Nagaraju J, Raje Urs, Datta RK (1996) Cross breeding and heterosis in Silkworm, Bombyx mori L. Sericologia 36, 1-26.
  10. Nirmal Kumar S, Ramesh Babu M, Basavaraja HK, Mal Reddy N, Datta RK (1998) Double hybrids for improved silk production in Silkworm Bombyx mori L.; in Silkworm Breeding. Sreerama Reddy G (ed), pp. 209-217, Oxford and IBH Publication, New Delhi, India.
  11. Pallavi SN, Naseema Begum A, Ashwath SK, Mahalingappa KC, Joge PG (2003) Evaluation of single parents and foundation crosses of bivoltine silkworm Bombyx mori L.; in Advances in Tropical sericulture. Dandin SB, Mishra RK, Gupta VP, Reddy YS (eds), p. 27, NASSI, Bangalore.
  12. Singh RK, Chaudhury BD (1977) Biometrical methodsn in quantitative genetic analysis. Kalyani Publications, New Delhi, India
  13. Suresh Kumar N, Basavaraja HK, Kalpana GV, Joge PG, Mal Reddy N, Nanjegowda B, Dandin SB (2010) Development of sustainable bivoltine double hybrid of the silkworm, Bombyx mori L. for tropics. Indian J Seric 49, 76-80.

Cited by

  1. Effect of oral supplementation with polyamines on testicular development and egg production in Bombyx mori (Lepidoptera: Bombycidae) vol.51, pp.4, 2016, https://doi.org/10.1007/s13355-016-0428-1