Article

Evaluation of morpho-biological indicators of the winter wheat RIL population resistant to yellow rust

N K NorbekovCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanN N KhusenovCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanI S NormamatovCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanU A BoykobilovCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanA Kh MakamovCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanM M KholmuradovaCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanR I MukhammadalievCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanM A JuraevScientific Research Institute of Rainfed Agriculture, M Omonov Street 1, Gallaorol City 130 400, Jizzakh Region, UzbekistanV S KamburovaCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanN R RakhmatovaCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanSh. I. MamanazarovCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanY A MuhammadovCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanI E BozorovCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanB K RakhmanovCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, UzbekistanZ T BurievCenter of Genomics and Bioinformatics, Academy of Sciences of the Republic of Uzbekistan, University Street 2, Tashkent 111 215, Tashkent Region, Uzbekistan

Plant Science Todayjournal2026en

ABI

Abstract

Yellow rust (Puccinia striiformis f. sp. tritici) is a critical threat to wheat production in Uzbekistan, often resulting in significant yield losses. Developing resilient varieties through recombinant inbred line (RIL) populations is essential to stabilise regional food security. This study evaluated the morpho-biological and agronomic performance of an F8 RIL population (n = 100) derived from a cross between the resistant donor KR12-9010 and the high-yielding recurrent parent Jaykhun. The experiment was conducted during 2024–2025 at the Centre of Genomics and Bioinformatics, Tashkent (41°20' N, 69°18' E), using a randomised complete block design (RCBD) with three replicates. Plants were grown under an artificial infectious background created using a 1:300 ratio of P. striiformis urediniospores powder. Key observations included tillering, plant height, spike length, grain count per spike and grain weight per spike. Statistical analyses, including K-means clustering and analysis of variance (ANOVA), identified 43 “RIL_max” lines that were significantly superior to the recurrent parent Jaykhun. Notably, 26 elite lines surpassed the recipient in all evaluated traits and matched or exceeded the donor line KR12-9010, even under high disease pressure. These lines demonstrated successful introgression of resistance along with improved yield components. These findings provide advanced germplasm for wheat breeding programmes, offering a practical solution for sustainable production in rust-affected areas.

Topics

Wheat and Barley Genetics and Pathology Agricultural Productivity and Crop Improvement Rice Cultivation and Yield Improvement

Identifiers

DOI: 10.14719/pst.12228

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