THE GENETIC VARIATIONS of cultivated Asian rice have been mapped.
The map of 3,010 accessions, or the unique identifier given to a DNA, is the largest for a crop’s genome, the complete set of DNA—including all of its genes that contains all of the information needed to build and maintain a particular rice variety. The map is important in rice research because genomic variation is responsible for all the differences that make each rice variety different from another.
The genetic map will enable scientists to discover new gene variants and characterize known genes for important traits, such as the natural ability of a particular variety to resist diseases and withstand floods, drought, and salty water.
Molecular breeders could use the genetic markers to select rice plants that are more likely to carry a desired trait before they are planted in the field, the International Rice Research Institute (IRRI) said in a press statement.
About 780,000 rice accessions are available in gene banks worldwide. To enable the more efficient use of these accessions in future rice improvement, the Chinese Academy of Agricultural Sciences (CAAS), Beijing Genomics Institute (BGI-Shenzhen) and IRRI sequenced the 3,000- plus rice genomes.
“This information leads to faster and more accurate development of varieties suited to various agricultural environments, especially for unfavorable rice-growing areas where the poorest and most vulnerable farmers reside,” said Dr. Jacqueline Hughes, IRRI Deputy Director General for Research.
Diese Geschichte stammt aus der June 2018-Ausgabe von Agriculture.
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Diese Geschichte stammt aus der June 2018-Ausgabe von Agriculture.
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