Main Article Content
Due to the salinity of the soil and the short growing season in the Republic of Karakalpakstan, low-yielding, intensive, well-constructed cotton varieties are still poorly developed. To solve this problem, using different hybridization methods from the U.S. and Mexican cotton collections allows us to change the negative correlation between fastness, fiber yield, length, and yield for the better.In order to create high-quality and high-yielding varieties, based on the study of collection samples from the centers of origin of cotton, as well as from the United States and Mexico, they were involved in mixing them with regional and promising new varieties in Karakalpakstan. As a result, in the F3 plants with an intensive, optimal tuber design, there was an advantage over their parents in almost all combinations on the sign of early maturation, and it was possible to select early maturing genotypes. It was found that the sign of rapid maturation is also a polygenic sign and depends on the genotype of the sample involved in the crossbreeding.