Japanese scientists find genes that make rice grains easy to fall off

Experts from the Institute of Agricultural Bioresources in Japan published a paper in the new issue of the journal Science. They said that they discovered a gene that makes rice grains easy to fall off and a "switch" that regulates the function of this gene. The researchers hybridized Indika, an easy-to-grain rice cultivar, with Nipponbare, a rice cultivar that was difficult to exfoliate, and cultivated more than 100 hybrids, and then compared the degree of difficulty in grain shedding and genetic differences. Relationship between. They found that a gene called "qSH1" causes rice to produce a separation membrane that causes the grains to fall off easily. At the same time, a transcription factor acts as a "switch" that regulates the function of this gene. The researchers implanted Indica's "qSH1" gene and this transcription factor into "Nipponbare," and the cultivated kernels also became detached easily. Indika rice is widely grown in India, Southeast Asia and other regions, but the seeds of this variety are easy to fall off and affect yield. The researchers believe that the use of hybrid or transgenic technology to control the "qSH1" gene and transcription factor in Indikar rice will hopefully increase the yield of this species of rice.

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