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     Lineage: Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; Spermatophyta; Magnoliophyta; Liliopsida; Poales; Poaceae; PACMAD clade; Panicoideae; Andropogonodae; Andropogoneae; Sorghinae; Sorghum; Sorghum bicolor

Sorghum is a diverse genus of C4 monocot plants. Some members are formidable weeds. The domesticated members are grains that are grown for use as human food, animal feed, and industrial feedstocks. It is the fifth most important cereal crop in the world and third in the United States. Many members of the genus are interfertile. In 1996 approximately half of the sorghum production was in equatorial Africa - the location of domestication. Support for sorghum genomics and genetics expanded with the realization that sorghum, with a size of approximately 760 Mb, would be 1) an attractive bridge genome between rice and the large-genome crops such as maize (~2500 Mb) and sugarcane (2550 to 4200 Mb) and 2) the most logical next grass genome in the effort to build a sequence-based "grass genome template". There are three efforts toward these goals. First, generate an EST collection as complete as possible. The work is a collabrative effort between University of Georgia, Texas A & M University, USDA/ARS, and Drs. Sumio Sugano and Yutaka Suzuki of the Tokyo University, College of Medicine. Second, generate both a genetic map with locus density {both particulate Mendelian loci and QTL loci} as great as possible and a physical map. Third, utilize standard DNA techniques to document the genome collinearity between sorghum, rice, Arabidopsis and corn. Both S. bicolor and S. propinquum have been the organisms utilized for these efforts because these are sufficiently close as to enable fertile progeny following interspecific crosses. An expected serendipitous product of this effort will be the tagging, or even reduction to a particulate Mendelian locus, of some QTL loci.

Eleven genetic maps are available in Map Viewer. Detailed information for the maps is available in the BioProject database. The details of the conversion from linkage group nomenclature of each map to the cytologic nomenclature is available.

The genome sequence was determined for cultivar BTx623 by JGI. Assembly and annotation of the material submitted to GenBank was done by the JGI Annotation Team and the Sorghum Consortium.

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