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The origins of Rice Varieties
Written by Cherry   
Friday, 13 May 2011

A research study was co-authored by Prof. Michael Purugganan of New York University. Graduated from the University of the Philippines with a BS degree in 1985, earned his Master's at Columbia University in 1986, and received his Ph.D from the University of Georgia in 1993. His work can be viewed at the Center for Genomics and Systems Biology. He is also a Professor of Biology and Dorothy Schiff Professor of Genomics at New York University.

The study indicates that all of the world's domesticated rice assortment may have instigated from a single place in China thousands of years ago. Earlier, it had been thought that domesticated rice may have come from India. Based from May 2 press release from New York University, by the aid of large-scale gene re-sequencing, Purugganan and his team of researchers namely researchers from New York University's Center for Genomics and Systems Biology for which he works as Associate Director and its Department of Biology; Washington University in St. Louis' Department of Biology; Stanford University’s Department of Genetics; and Purdue University’s Department of Agronomy.

Traced the origin of domesticated rice way back 9,000 years ago to Yangtze Valley, China. The varieties of either japonica or indica are the tens of thousands of kinds of rice available in the world today wherein the two major subspecies of Asian rice, Oryza sativa.

According to a report, the multiple-origin model has gained cash in current years as biologists have observed considerable genetic differences between indica and japonica, and several studies examined the evolutionary relationships among rice varieties. Domesticated rice that we may have once thought originated in India but actually has its initial stages in China. Because the rice was brought in from China to India by merchants and migrant farmers, it is possible that it has been hybridized extensively with local wild rice. Purugganan stated that crops are plant species that have grown in a edifying context to offer food and other products for the people. Crop species are interesting subjects for evolutionary study, since they are model of species that have undergone rapid diversification under intense selection pressures. They also authorize us to know the active interface between genetics, evolution, and human culture. [via gmanews.tv]

 
 


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