Analysis Of Morphobiological Characteristics In Certain Varieties Of Cotton

Аннотация

In the development of early-maturing, high fiber-yielding, long-fiber, high-yield, and disease- and pest- resistant cotton varieties, as well as in the identification of hybrids, it is essential to focus on studying their morphobiological and agronomic characteristics. In this regard, the effective use of hybridization methods in research is required. Keywords: Cotton, early-maturing, variety, hybrid, morphological, cotton weight per boll, weight of 1000 seeds. Introduction: After the independence of our country, Mexican cotton to verticillium wilt is inherited in its significant attention has been given to the selection of hybrid offspring. As a result of his research, early- agricultural crops. maturing cotton varieties with high yield and fiber Currently, all focus is directed toward the creation of quality, as well as resistance to wilt, were developed. early-maturing, high-yielding, high-quality fiber, When creating Tashkent varieties, the Mexicanum disease- and pest-resistant cotton varieties. As a result, subspecies, which had brown-colored fibers, was used while maintaining high productivity, the areas allocated for hybridization. In the offspring of these hybrids, for cotton cultivation have been reduced, and plans are biotypes with white fibers were identified. It was also in place to plant other crops. established that the Mexicanum subspecies of cotton is In cotton genetics and breeding, it is crucial to utilize not only resistant to wilt, but also has high yield, forms that differ from each other based on their origin, drought resistance, high fiber output, and fiber quality productivity, and other valuable agronomic traits. This [7]. approach has been confirmed in the scientific research The analysis showed that in the C-6524 variety of of many scholars. cotton, 57-89% of the weight of cotton per boll is S. Mirakhmedov identified that the resistance of wild determined by genes, and 11-43% is influenced by American Journal Of Agriculture And Horticulture Innovations 24 https://theusajournals.com/index.php/ajahi American Journal Of Agriculture And Horticulture Innovations (ISSN: 2771-2559) external factors [6]. are not only high-yielding, early-maturing, and In the experiment, by using topcross hybridization, the resistant to diseases, pests, and adverse environmental inheritance of major agronomic traits in F1 hybrids factors, but also exhibit high fiber yield. Furthermore, from both the parental lines and varieties, as well as the the fiber quality, including micronaire value, must meet general and specific combining abilities of the parental the requirements of the textile industry. lines, were observed to differ from each other. REFERENCES The analysis of the dispersion of the inheritance of 1. Amanturniev A.B., Boboev Y.A., Kim R.G., valuable traits, such as the number of bolls, the period Khojamberganov N.M. Inheritance of major from germination to maturity, the cotton weight per agronomic traits in medium-fibered cotton boll, fiber yield, fiber length, and plant height in the F1 varieties and hybrids. // Cotton and Grain hybrids, was conducted. The results of this analysis Cultivation. 1997, No. 3, pp. 12-14. were clearly identified [1]. 2. Amanturniev Sh.B. Effectiveness of inter-hybrid According to the analysis of the results, in the second crosses in the formation of breeding material generation, many agronomic traits deviated from the combining a complex of agronomically valuable indicators of the parent forms, thus expanding the traits in fine-fiber cotton: PhD Thesis in Agricultural selection potential [2]. Sciences. – Tashkent, 1998. – 19 p. In research conducted by Akhmedov J.Kh. and 3. Akhmedov J.Kh., Mirzarasulov M. Evaluation of Mirzarasulov M., it was found that in the F2 hybrid phenotypic correlations between some population, cotton yield was associated with boll agronomically valuable traits in distant F2 hybrids. weight, number of bolls per plant, fiber yield, and fiber // Uzbekistan Agrarian Science Bulletin. 2003, No. length. It was determined that the yield was related to 1(11), pp. 42-44. the number of bolls per plant and boll weight. This 4. Nosirova M.D. Scientific justification for the finding emphasizes the need to intensify breeding cultivation methods of post-harvest mung beans research aimed at creating varieties with high boll (Asian bean - Phaseolus aureus P.) under irrigated aggregation and large boll size. However, since the conditions of Tajikistan. // PhD Thesis in correlation between yield and fiber output and length Agricultural Sciences. – Dushanbe, 2011. – p. 40. was low, it was demonstrated that these traits 5. Senoyedov V.P., Azizov V.G. Fusarium wilt infection inherited independently in the F2 hybrids [3]. levels in the G. hirsutum L. cotton species. // Cotton At the same time, it was established that fine-fibered and Grain Cultivation. 1997, No. 3, pp. 32-34. cotton is slower to mature, yields less, has rounder 6. Siddikov A., Egamberdiev A., Sodiqo