Abstract

‘Jopyeong’ is a new japonica rice variety developed from a cross between cold tolerant ‘HR16683-46-3-1’ and ricestripe virus and bacterial blight resistant ‘HR18129-B-16-1-4’ by the rice breeding team of Department of Rice and Winter CerealCrop, NICS, RDA in 2010. This cultivar has about 114 days of growth duration from transplanting to harvesting in northernplain, northern and southern mid-mountainous area of Korea. This cultivar is about 67 cm in culm length and tolerant to lodging.‘Jopyeong’ was multiple resistance to rice stripe virus, bacterial blight and blast. The milled rice of ‘Jopyeong’ exhibits translucent,relatively clear non-glutinous endosperm and medium short grain. Compared to ‘Odaebyeo’, it has similar amylose content(19.9%), palatability of cooked rice and high protein content (6.5%). The milled rice yield performance of this cultivar was about5.67 MT/ha in local adaptability test. ‘Jopyeong’ would be adaptable for ordinary transplanting in northern plain, mid-mountainousand southern mountainous area of Korea.

• Keywords: Rice, Jopyeong, Early maturity, Good quality, Rice stripe virus resistance