Oryza glaberrima is a crossbreed of Carolina Gold and two "Oryza sativa" breeding lines called IR64 (Indica) and IR65610-24-3-6-3-2-3, which raised the yield, shortened the stem, and added an aromatic quality to the rice. Oryza glaberrima Oryza glaberrima, commonly known as African rice, is one of the two domesticated rice species. It was first domesticated and grown in West Africa, and was brought to the Americas by enslaved West African rice farmers. It is now largely a subsistence crop, rarely sold in markets even in West Africa. While it has been partly replaced by higher-yielding Asian rice, and the number of varieties
Helitron (biology) Helitron (biology) Helitrons are one of the three groups of eukaryotic class 2 transposable elements (TEs) so far described. They are the eukaryotic rolling-circle transposable elements which are hypothesized to transpose by a rolling circle replication mechanism via a single-stranded DNA intermediate. They were first discovered in plants ("Arabidopsis thaliana" and "Oryza sativa") and in the nematode "Caenorhabditis elegans", and now they have been identified in a diverse range of species, from protists to mammals. Helitrons make up a substantial fraction of many genomes where non-autonomous elements frequently outnumber the putative autonomous partner. Helitrons seem to have a major role