BioProject

Rice is one of the most important food crops in the world and feeds more people than any other crop. Rice belongs to the genus Oryza which includes approximately 24 species of which 2 are cultivated and 22 are wild. They are widely distributed, growing in different habitats and different soil types. They show differences in plant growth, yield, pest and disease resistance, stress tolerance and water requirement. Rice grain comes in different sizes (short, medium or long grain) and colors (brown, black, purple, or red).

Genus Oryza has 10 recognized genome types: AA, BB, CC, BBCC, CCDD, EE, HHKK, HHJJ, FF, and GG. There is a five fold difference in genome size among the species. Part of this can be explained by ploidy with diploid species having 2n = 24 chromosomes and tetraploid species having 2n = 48 chromosomes. More...

Rice is one of the most important food crops in the world and feeds more people than any other crop. Rice belongs to the genus Oryza which includes approximately 24 species of which 2 are cultivated and 22 are wild. They are widely distributed, growing in different habitats and different soil types. They show differences in plant growth, yield, pest and disease resistance, stress tolerance and water requirement. Rice grain comes in different sizes (short, medium or long grain) and colors (brown, black, purple, or red).

Genus Oryza has 10 recognized genome types: AA, BB, CC, BBCC, CCDD, EE, HHKK, HHJJ, FF, and GG. There is a five fold difference in genome size among the species. Part of this can be explained by ploidy with diploid species having 2n = 24 chromosomes and tetraploid species having 2n = 48 chromosomes.

Oryza Map Alignment Project (OMAP) is a genomics project funded by NSF. The long term goal of the project is to understand the Oryza genome, to understand the evolution, physiology, and biochemistry of the genus Oryza and to thus enhance positional cloning efforts in rice. The project intends to construct BAC libraries for 12 representatives and with this resource to 1) construct physical maps representing all 10 Oryza genomes; 2) align the physical maps with the sequenced map of O. japonica and O. indica; and 3) construct detailed physical maps of rice chromosomes 1, 3 and 10 from all 10 wild genomes. The Oryza species being used are O. rufipogon (AA), O. nivara (AA), O. glaberrima (AA), O. punctata (BB), O. minuta (BBCC), O. officinalis (CC), O. alta (CCDD), O. australiensis (EE), O. brachyantha (FF), O. granulata (GG), O. ridleyi (HHJJ), and O. coarctata (HHKK). Less...