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‘Chindeul', a new japonica rice cultivar developed from a cross between HR22538-GHB-36-4 having brown planthopper (BPH) resistance and Iksan471 having a good eating-quality and high yield, was developed by the rice breeding team of Department of Rice and Winter Cereal Crop, NICS, RDA in 2012. This variety has about 124 days growth duration from transplanting to harvesting in west-southern coast, Honam and Youngnam plain of Korea. It has 83 cm culm length and tolerance to lodging. In reaction to biotic and abiotic stresses, it shows resistance to bacterial blight pathogen races from K1 to K3, stripe virus and brown planthopper. The milled rice of ‘Chindeul' exhibits translucent, relatively clear non-glutinous endosperm and medium short grain. It has lower protein content of 5.9% and good palatability of cooked rice compared with Nampyeongbyeo. The milled rice yield performance of this variety is about 5.61 MT/ha in local adaptability test for three years. ‘Chindeul' would be useful genetic resources for multi-resistance breeding program against disease and insect. [ABSTRACT FROM AUTHOR]

‘Sodami' is a new high quality japonica rice variety developed from a cross between ‘Iksan469' and ‘Unbong31' by the rice breeding team of Rice Breeding and Cultivation Research Division, Department of Rice & Winter Cereal Crop, NICS, RDA. This variety is suitable for low level nitrogen fertilizer (LNF, 6kg/10 a) cultivation at ordinary season. The heading date of ‘Sodami' was August 16th, the same that of ‘Nampyeong' at ordinary season cultivation. Culm length of ‘Sodami' was about 81 cm and this variety had 12 tillers per hill and 134 spikelets per panicle. Ripened grain rate of this variety was approximately 86.8%. The spikelet fertility of ‘Sodami' was similar to that of ‘Sobi' and higher than that of ‘Nampyeong' by 26% when exposed to cold stress. ‘Sodami' is resistant to bacterial blight and rice stripe virus but susceptible to blast disease and planthoppers. The milled rice of ‘Sodami' exhibits translucent, clear non-glutinous endosperm and medium short grain. It shows lower protein content than that of ‘Nampyeong' and ‘Sobi'. The milled rice yield of this variety was slightly higher than that of ‘Sobi' by 3% as about 5.2 MT/ha in LNF cultivation at ordinary season but it was not significantly different and much higher by 9% as about 6.0 MT/ha than that of ‘Nampyeong' in ordinary season cultivation in local adaptability test for three years. ‘Sodami' could be adaptable to plain areas of south of Chungcheongnamdo and southwest coastal district of Korea. [ABSTRACT FROM AUTHOR]

Oryza sativa ‘Sinbo’ is a cultivar of japonica rice with good eating quality as well as resistance to rice dwarf virus (RDV) and bacterial blight disease (BB). It was developed in 2013 by the rice breeding team of Yeongdeok Branch, National Institute of Crop Science, RDA, Korea. This cultivar was derived from a cross between ‘Yeongdeog34‘, a cultivar with good eating quality, and ‘Saekyehwa’, a cultivar of a good plant type, in summer of 2002. A promising line (YR24264-25-3-2) selected using the pedigree breeding method was designated as ‘Yeongdeog55’ in 2010. After carrying out the local adaptability test at nine locations from 2011 to 2013, ‘Yeongdeog55’ was published under the name of ‘Sinbo’ in 2013. ‘Sinbo’ is a medium-late maturing cultivar with a short culm length of 70 cm. This cultivar is resistant to K1, K2, and K3 races of bacterial blight as well as to dwarf virus, and it is moderately resistant to leaf blast disease. The results of the panel test indicated that ‘Sinbo’ has translucent and clear milled rice kernel without white core and belly rice as well as good eating quality. The yield potential of ‘Sinbo’ was approximately 5.67 MT/ha at the ordinary fertilizer level in the local adaptability test (LAT). This cultivar could be adaptable to the middle plain, south plain, Yeongnam plain, east costal area, and south mid-mountainous area of South Korea. (Registration No. 5643) [ABSTRACT FROM AUTHOR]

A rice variety ‘Dabo‘ is a japonica rice (Oryza sativa L.) with good eating quality, lodging tolerance, and resistance to rice stripe virus (RSV) and blight bacterial disease(BB). It is developed by the rice breeding team of Yeongdeog Substation, National Institute Crop Science, RDA in 2012. This variety derived from a cross between ‘Yeongdeog31' with good plant type and ‘Milyang165' with good eating quality conducted in 2001/2002 winter season. A promising line, YR23160-31-2-1-5-B-3, selected by pedigree breeding method was designated as the name of ‘Yeongdeog53' in 2009. After the local adaptability test was carried out at seven locations from 2010 to 2012, ‘Yeongdeog53' was released as the name of ‘Dabo’ in 2012. ‘Dabo’ is short culm length as 69 cm and medium-growth duration. This variety is resistant to races, K1, K2, and K3 of bacterial blight and stripe virus and moderately resistant to leaf blast disease. ‘Dabo’ has translucent and clear milled rice kernel without white core and belly rice, and good eating quality as a result of panel test. The yield potential of ‘Dabo’ in milled rice is about 5.90 MT/ha at ordinary fertilizer level of local adaptability test. This cultivar would be adaptable to south plain, east-south costal area, and south mid-mountainous area. [ABSTRACT FROM AUTHOR]

‘Huimangchan' is a new japonica rice variety developed and registered by the rice breeding team of Department of Rice and Winter Cereal Crop, NICS, RDA in 2011. This variety was derived from the three-way cross of ‘Milyang165', ‘Shindongjin' and ‘YR19105-Acp222'. This variety has about 126 days of growth duration from transplanting to harvesting in Honam and Youngnam plain of Korea. It is about 91 cm in culm length and tolerance to lodging. In reaction to biotic stresses, it shows moderate resistance to blast, resistance to bacterial blight pathogen races from K1 to K3, and rice stripe virus, but susceptible to other major diseases and insect pests. The milled rice of ‘Huimangchan' has high quality, midium short grain. The milled rice yield of this variety is about 6.18 T/ha in local adaptability test for three years. ‘Huymangchan' would be adaptable to Middle plain, Honam plain and Youngnam plain area of Korea. [ABSTRACT FROM AUTHOR]

'Anmi' is a new BPH (Brown planthopper) resistant japonica rice cultivar possessing the Bph18 gene derived from wild rice, Oryza australiensis and high yield potential with good grain quality. ‘Anmi' was derived from a cross ‘Junam' and ‘IR65482-7-216-1-2' by a molecular marker assisted backcross breeding. The introgression line ‘IR65482-7-216-1-2', the source of the Bph18 gene, was used as the donor parent for BPH resistance and ‘Junam', a BPH-susceptible elite japonica cultivar with good grain quality, was used as the recurrent parent. ‘Anmi' was developed by three times backcross the F1 plants with ‘Junam'. The heading date of ‘Anmi' is August 15 in central plain area, which is 5 days later than that of ‘Hwaseong'. It has 77 cm in culm length, 21 cm in panicle length. The number of spikelets per panicle is more than that of ‘Hwaseong' and 1,000 grain-weight of brown rice is 22.1 g which is less than 22.7 g of ‘Hwaseong'. Milled rice kernel of ‘Anmi' is clear in appearance, low in amylase content and excellent in palatability of cooked rice. ‘Anmi' shows resistance to BPH, leaf blast disease, bacterial blight, rice stripe disease but susceptible to other virus disease and insect pest. The milled rice yield performance of ‘Anmi' is about 5.76 MT/ha in local adaptability test for three years. This cultivar is ad aptable to central plain area of Korea. [ABSTRACT FROM AUTHOR]

'Seomyeong' is a new japonica rice variety developed and registered by the rice breeding team of Department of Rice and Winter Cereal Crop, NICS, RDA, in 2009. This variety was derived from the cross between 'Gyehwa21' having a good grain quality and ‘Milyang165' having a high yield and lodging resistance. This variety had about 121 days growth duration from transplanting to harvesting in Honam and Yeongnam plain of Korea. It has about 70 cm in culm length and tolerance to lodging. In reaction to biotic and abiotic stresses, it shows resistance to brown spot and rice stripe virus and moderately resistant to leaf blast. But it is susceptible to bacterial blight and insect pests. The milled rice of 'Seomyeong' shows translucent with non-glutinous endosperm and medium short grain. It shows 19.3% amylase and 7.2% protein content. The milled rice yield of 'Seomyeong' is about 5.6 MT/ha under the ordinary transplanting cultivation in Korean climate conditions. 'Seomyeong' would be adaptable to south-western costal area in Korea. [ABSTRACT FROM AUTHOR]

‘Suan' is a new high quality japonica rice variety developed from a cross between HR20017-B-19-3-1 and Iksan467 in 2003 by the rice breeding team of Rice Breeding and Cultivation Research Division, Department of Rice & Winter Cereal Crop, National Institute of Crop Science, RDA. in 2010. ‘Suan' has about 132 days growth duration from direct seeding to harvesting in the southern plain including Chungcheong province. The heading date of ‘Suan' is August 10, faster than that of ‘Nampyeongbyeo’ by 6 days at ordinary season cultivation. Culm length of ‘Suan' is about 79 cm and tiller number per hill is similar to ‘Nampyeongbyeo’ and spikelet number per panicle is fewer than ‘Nampyeongbyeo’. Ripened grain rate of this variety is approximately 94.6 %, higher than ‘Nampyeongbyeo’ and ‘Suan' showed higher spikelet fertility than ‘Nampyeongbyeo’ by 12 % when exposed to cold stress. ‘Suan' has medium size of brown rice and is resistant to leaf blast, bacterial blight and stripe virus disease but susceptible to insect pests. The milled kernel of ‘Suan' is translucent with non-glutinous endosperm. Protein content of ‘Suan' is about 6.5%, amylose content and palatability of cooked rice is similar to ‘Nampyeongbyeo’. The milled rice yield is about 5.47 MT/ha, 9% higher under wet-direct seeding, 5.56 MT/ha, 9% higher under dry-direct seeding than ‘Juanbyeo’ and 5.80 MT/ha, 4% higher under the standard fertilizer level of the ordinary transplanting cultivation when compared with ‘Nampyeongbyeo’. ‘Suan' would be adaptable for ordinary transplanting and direct seeding in the plain areas of south of Chungnam and southwest coastal district of Korea. [ABSTRACT FROM AUTHOR]