THE MANIFESTATION OF CERTAIN TRAIT CHARACTERISTICS IN THE PHENOTYPE OF G. HIRSUTUM L
Keywords:
G. hirsutum L., varieties, lines, populations, morpho-agronomic traits, indicators, variability, correlation, genotype, phenotype, differentiation, data, comparative analysis.Abstract
This article analyzes the data collected as a result of scientific research conducted at the Institute of Genetics and Plant Experimental Biology of the Academy of Sciences of the Republic of Uzbekistan, aimed at identifying the manifestation of important morpho-agronomic trait indicators characteristic of upland cotton genotypes. As research materials, the varieties Kelajak, UzFA-707, UzFA-710, Mehnat, Yulduz, and AN-Boyovut-2, as well as the lines T-19, T-41, T-826, T-840, T-1278, T-1326, T-1336, T-1391, T-1470, T-1477, T-1777, and T-8588, were sown and cultivated in 2020 under the prevailing soil and climatic conditions of Tashkent region. In the resulting populations, average values were determined for traits such as plant height, number of sympodial branches, total and opened bolls per plant at the end of the vegetation period, number of locules per boll, seed cotton weight per boll, fiber yield, and fiber length. The manifestation of correlation relationships among these traits was also identified. The obtained data were analyzed both in terms of inter-genotypic variation and by comparison with the standard varieties Namangan-77 and C-6524. It was found that, during the research period, the average values of the analyzed traits varied among the cotton genotypes and in comparison with the standard varieties. Although none of the research materials demonstrated consistent superiority across all traits in a balanced manner, certain varieties and lines exhibited advantages over others in specific traits under investigation. During the research period, the variety Kelajak was identified as one of the most productive genotypes. At the conclusion of the article, based on the superior performance of the analyzed cotton genotypes compared to the standard and other samples in the studied traits, important conclusions and recommendations were provided regarding the use of these genotypes not only in production but also in scientific research.
