The identification of molecular markers linked to leaf curl virus (CLCuV) disease resistance in cotton has the potential to improve both the efficiency and the efficacy of selection in cotton breeding programs. Genetic analysis suggested that CLCuV resistance is controlled by a single dominant gene. In this study, an interspecific F2 population derived from a cross of Gossypium barbadense and G...

Gossypium tomentosum is a wild allotetraploid species with the (AD)5 genome. It is characterized by many useful traits including finer fiber fineness, drought tolerance, and Fusarium and Verticillium resistance. We constructed the first bacterial artificial chromosome library for Gossypium tomentosum. With high quality and broad coverage, this library includes 200,832 clones, with an average in...

Effective use of Gossypium hirsutum L. lines in cotton genetic improvement programs depends on the extent of genetic variation for desirable alleles and the accurate characterization of the variability among germplasm accessions. Marker assisted selection has provided the potential for efficient development of disease and pest resistant plants. Association mapping is used to identify chromosoma...

Plant mitochondrial and chloroplast genes that underwent horizontal transfer have been identified by parasite and grafting systems, respectively. Here, we directly observed 3 horizontal gene transfer (HGT) events in the 45 second axillary shoots of grafted cotton plants (Gossypium barbadense and Gossypium hirsutum) after extirpating the first axillary bud. The second axillary shoots showed phen...

By J. ARTHUR HARRIS, headj Department of Botany, University of Minnesota, and collaborator, Bureau of Plant Industry, U. S. Department of Agriculture; CLARA T. HOFFMAN, field assistant, Office of Alkali and Drought-Resistant Plant InvestigationSy Bureau of Plant Industry, U. S. Department of Agriculture (1923-24); and WALTER F. HOFFMAN", assistant agricultural biochemist, Division of Agricultur...