There are traces of artificial selection domestication in the wild rice genome.

A study conducted by researchers at the Institute of Genetic Development of the Chinese Academy of Sciences, in collaboration with researchers at the University of Copenhagen in Denmark and the University of California, Berkeley, found traces of artificial selection and domestication in the wild rice genome, which subtly confirmed the flow of large amounts of cultivated rice genes into wild rice populations.
results were published in the American Journal of Genomics Research.
researchers dug deep into the published large amount of wild rice and cultivated rice genome data.
whole genome analysis found that the existing wild rice population has a large number of genetic components from cultivated rice, and even some "wild rice" is the recent wild cultivation of rice.
and wild rice populations in different parts of Asia, there is a strong correlation between their genetic composition and the locally grown rice components.
researchers believe that this surprising evidence suggests that current wild rice should be treated as a "hybrid" rather than an independent species, linked by a wide range of gene streams and cultivated rice, which evolved together with cultivated rice.
findings also warn that more scientific conservation of wild rice resources is urgent.
wild rice population has been used to help researchers understand the origin of rice domestication because of its genetic diversity and geographical distribution.
based on wild rice evidence, the researchers have proposed different models of rice domestication.
this new discovery has changed previous understandings about wild rice, and will prompt a rethinking of the origin model of rice domestication based on wild rice.
it is understood that common wild rice (Oryza rufipogon) has long been considered a wild ancestor of rice cultivation in Asia, but also an important species resource in the process of rice improvement.
important genes in the process of major rice improvement, such as Yuan Longping's key "wild defeat" gene in the process of creating "three-system" hybrid rice, are from ordinary wild rice.
wild rice has also been proved to contain a large number of insect-resistant, disease-resistant genetic resources, so wild rice resources in the future to meet the challenges of stable rice yield and high yield is of great value.
, however, with the gradual expansion of modern agricultural arable land, the wild habitat of ordinary wild rice is constantly destroyed, coupled with genetic erosion from cultivated rice, wild rice resources are shrinking.
how to protect wild rice resources more effectively and extract some important genetic resources from wild rice resources has always been an important scientific problem.
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