This article analyzes the productivity of cocoons and such main process parameters as the dry weight of cocoon output raw silk, the output of silk products from the dry cocoons, the cocoons unwinding properties, the total length of cocoon filament, continuous length of cocoon filament and cocoon metric number of the thread of simple and complex hybrids, created by scientists of Scientific research Institute of sericulture. The studies studied simple hybrids Musaffo Tola 1, Musaffo Tola 2, foreign hybrid Jing song Hoayou, as well as complex hybrids Uzbekistan 5 and Uzbekistan 6. As a result of studies on productive indicators, the complex hybrid Uzbekistan 6 in the spring season of 2018 showed a high mass of cocoons in comparison with others, 1.89 g, and in the next 2.35 g. in other hybrids, this indicator turned out to be relatively low. In terms of the mass of the cocoon shell, a simple hybrid Musaffo Tola 2 was identified in 2019. In addition, according to technological indicators, a simple hybrid Musaffo Tola 1 showed a high overall length, namely 1691 m. the unwinding of the thread in this hybrid is also greater than in other hybrids-91.1-92.6%. Engineering Science and Materials: Technology of cotton and textile industry 2 Textile Journal of Uzbekistan №2/2019 Complex hybrids Uzbekistan 5 and Uzbekistan 6 (1200-1508 m) distinguished themselves by the length of the continuously unwinding thread.
1. www.worldatlas.com internet ma`lumoti. 2. Nasirillayev U.N., Lejenko S.S., Dvoynikova T.N., Mustafoyeva G.Yu., Azizov B.S. Tut ipak qurtining yirik pillali zotlar ishtirokidagi sanoat duragaylari//Тo`plam: O`zbekiston ipakchilik rivojlanishining ilmiy asoslari. – Тoshkent: Fan, 2001 y. -34-38 - b. 3. Nasirillayev B.U., Umarov Sh.R., Jumaniyozov M.Sh., Giyosova K.S. Ipak qurtining yangi “Liniya 27” va “Liniya 28” tizimlarining hayotchanlik va mahsuldorlik hususiyatlari. //Zooveterinariya. Тоshkent, 2016. - №4 (101). – 40-b. 4. Nasirillaev B.U. New highly productive hybrids of mulberry silkworm (Bombyx mori L.) of industrial purpose with high technological characteristics of cocoon. // International Journal of Applied Research. Volume 3, Issue 2. India, 2017. –p.:72-75. 5. Emilia Maria Furdui, Liviu Al. Mărghitaş, Daniel Dezmirean, Cristina Manuela Mihai, Furdui E. M. Comparative study of biological characteristics of larvae, crude and dried cocoon in 7 races of silkworm Bombyx mori L., Raised in Transylvania Area. //Scientific Papers: Animal Science and Biotechnologies, 2010, 43 (1) 6. Ümran Şahan, Arda Sözcü, Merve Gündüz. The correlations between larval weight, cocoon weight, shell weight, shell ratio, pupal weight in four lines of silkworm, Bombyx mori L. // 8th BACSA international conference “Climate changes and chemicals – the new sericulture challenges”. Sheki, Azerbaijan, April 2nd – 7th 2017. -Р.61. 7. Axmedov N.A. Ipak qurti ekologiyasi va boqish agrotexnikasi. //“Voris”. -Toshkent, 2014. 21-52b. 8. Axmedov N.A., Navruzov S. Ipak qurti urug’chiligi. //“Cho’lpon”. - Toshkent, 2014. 36-79-b. 9. Chavaney G. Sericulture and silkworms today. //International symposium «Topical problems of world sericulture». Abstracts. Harkow, 1992. - P. 138-140. 10. Ullal S.R., Narasimhanns M.N. Handbook of prectical sericulture //Central silk Board, Bombey, 1981. - P. 118-119. 11. Chen, F.; David, P. and Vollrath. F. (2012). Structure and Physical Properties of Silkworm Cocoons. //Journal of Royal Society Interface, pp. 1-10. 12. Dandin,S.B.; Basavaraja, H. K. and Suresh Kumar, N. (2005), silkworm Breeds and Hybrids at Galore. //Published by Central Sericultural Research and Training Institute , Mysore, India, pp. 1. 13. Dandin S. B.; Jayaswal, J. and Giridhar, K. (2000), Handbook of Sericulture Technologies. //Published by Central Silk Board, Bangalore, India. pp.114-137 14. Dandin, S.B.; Srinivasbabu, G. K.; Chandrakanth, K.S. and Mathur, V. B. (2005), New Modified Card Board Mountages for Quality Cocoon Production. //The 20 Congress of Sericulture Commission, France, pp. 229-233. 15. Huang, C.R. (1983), Influence of Reative Humidity and Air Currents in the Mounting Room on the Cocoon Quality of Bombyx Mori in China. //Canye Kexue, 9: pp.90-92.
"Productivity indicators and technological parameters of cocoons of simple and complex hybrids, bred in different environmental conditions,"
Textile Journal of Uzbekistan: Vol. 6
, Article 10.
Available at: https://uzjournals.edu.uz/titli/vol6/iss2/10