title: Cytogenetic Characteristics of New Monosomic Stocks of Cotton (Gossypium hirsutum L.).
abstract: The use of aneuploid lines significantly increases the effectiveness of molecular-genetic analysis and the development of superior quality breeding lines via substitutions by alien chromosomes. To date, however, a complete set of aneuploid series for each cotton chromosome is not available. Here, we present the development of a monosomic stock collection of cotton (Gossypium hirsutum L.) from Uzbekistan, including the origin of 92 primary monosomics, meiotic metaphase-I analysis, study of tetrads of microspores, pollen fertility, and monosomic transmission rates for some monosomic lines. We report desynaptic effects of some monosomes detected both in parental and daughter monosomics, a positive role of interchanges in translocation heterozygous monosomics due to selective advantages of gametes with deficiency and a simultaneous interchange, pollen fertility variation, and strong differences in transmission rates. This monosomic cotton collection, developed using single genome background, will be useful for future breeding, genetic, cytogenetic, and molecular-genetic investigations of the cotton genome.
authors.affiliation: Cotton Genetics Laboratory, National University of Uzbekistan, Tashkent, Vuzgorodok 100174, Uzbekistan.
authors.forename: Marina F
authors.initials: MF
authors.lastname: Sanamyan
authors.forename: Julia E
authors.initials: JE
authors.lastname: Petlyakova
authors.forename: Elnora A
authors.initials: EA
authors.lastname: Sharipova
authors.forename: Ibrokhim Y
authors.initials: IY
authors.lastname: Abdurakhmonov