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Genetics Research International
Volume 2011 (2011), Article ID 273642, 12 pages
http://dx.doi.org/10.4061/2011/273642
Research Article

Cytogenetic Characteristics of New Monosomic Stocks of Cotton (Gossypium hirsutum L.)

1Cotton Genetics Laboratory, National University of Uzbekistan, Tashkent, Vuzgorodok 100174, Uzbekistan
2Center of Genomic Technologies, Institute of Genetics and Plant Experimental Biology, Academy of Sciences of Uzbekistan, Yuqori Yuz, Qibray Region, Tashkent 111226, Uzbekistan

Received 28 July 2010; Revised 11 October 2010; Accepted 24 January 2011

Academic Editor: Rhona H. Borts

Copyright © 2011 Marina F. Sanamyan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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.