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Monosomics of Cotton¹

From 1946 to 1975, 166 monosomic plants of Gossypium hirsutum L. were placed in the monosome testing program at Beasley Laboratory. The 85 that have been identified have been deficient in one of the following chromosomes: 1, 2, 4, and 6 from the A subgenome; 16, 17, and 18 from the D subgenome. These monosomes came from irradiation treatments, translocations, tertiary monosomes, duplication-deficiencies, cytological combinations, trisomics, other aneuploids desynaptics, other Gossypium species, cultivars, and breeding stocks.

Key Words: Gossypium hirsutum L. • Allotetraploid • Subgenome • Irradiation • Transiocation • Duplication-deficiency • Cytological combination • Trisomic • Aneuploid • Desynaptic • Cultivars • Breeding stocks

² Assistant professor, professor emeritus, professor, and research associate, respectively, Texas Agric. Exp. Stn., Dep. of Soil and Crop Sciences, Texas A & M Univ., College Station, TX 77843.

Received for publication December 20, 1979.