G‘O‘ZA DURAGAYLARINING QIMMATLI XO’JALIK BELGILARINI SELEKSION BEKKROSS YO’LI BILAN YAXSHILASH

IMPROVING THE VALUABLE ECONOMIC TRAITS OF COTTON HYBRIDS BY MEANS OF SELECTION BACKCROSSING

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Published: 2026-03-05
DOI: https://doi.org/10.66073/researchfocus.v5i2.2013
Keywords:
XLZ-52 variety, cotton bollworm, F1 hybrids, fibre yield, glyphosate resistance, backcrossing, economic traits, weight of 1000 cotton seeds

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Zaripov Xabib Salimovich
Paxta seleksiyasi, urug‘chiligi va yetishtirish agrotexnologiyalari ilmiy-tadqiqot instituti Navoiy viloyati ilmiy tajriba stansiyasii, direktori (O‘zbekiston Respublikasi Navoiy viloyati Karmana tumani Paxtaobod MFY taraqqiyot-1 ko‘chasi)
Namozov Doniyor Nozim o‘g‘li
Paxta seleksiyasi, urug‘chiligi va yetishtirish agrotexnologiyalari ITI (PSUYAITI) Navoiy viloyati ilmiy tajriba stansiyasi, qishloq xo’jaligi ekinlari seleksiyasi va urug’chiligi labоratoriya mudiri. (O‘zbekiston Respublikasi Navoiy viloyati Karmana tumani Paxtaobod MFY taraqqiyot-1 ko‘chasi)
Nazarmatov Abdumadjid Raximovich
Paxta seleksiyasi, urug‘chiligi va yetishtirish agrotexnologiyalari ilmiy-tadqiqot instituti Navoiy viloyati ilmiy tajriba stansiyasi direktorning ilmiy ishlar va innovatsiyalar bo‘yicha o‘rinbosari (O‘zbekiston Respublikasi Navoiy viloyati Karmana tumani Paxtaobod MFY taraqqiyot-1 ko‘chasi)

Abstract

In order to expand the possibilities of transferring the genes of resistance to the cotton bollworm and to glyphosate into local cotton varieties through the application of Bacillus thuringiensis (Bt) technology at the Navoi Scientific-Experimental Station, backcrossing work was carried out on the F1 hybrids obtained by crossing the Chinese cotton variety XLZ-52 with the new local cotton varieties S-01, Sharofat, SP-0655, SP-03, Sulton, S-6577, S-6601, S-8292, SP-0656, SP-04 and Bukhara-8. In order to transfer the double Bt genes of bollworm resistance (CRY1AC and CRY2AB) and the gene of herbicide resistance (4EPSPS) into local cotton varieties, the results of the backcrossing carried out on the F1 hybrids obtained by crossing the foreign cotton variety XinLuZao-52 with a total of 11 local varieties, the yield indicators and the effectiveness of the valuable economic traits were studied. The results showed that the XLZ-52 variety possesses a high combining ability in hybridization and can be used as a promising genetic resource in the production of high-quality fibre.

Article Details

Issue

Vol. 5 No. 2 (2026): Research Focus International Scientific Journal. Volume 5, Issue 2 (2026)

Section

06.00.00 – Agricultural sciences
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

IMPROVING THE VALUABLE ECONOMIC TRAITS OF COTTON HYBRIDS BY MEANS OF SELECTION BACKCROSSING. (2026). Research Focus International Scientific Journal, 5(2), 30-38. https://doi.org/10.66073/researchfocus.v5i2.2013

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