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이종희(Jong-Hee Lee),조준현(Jun-Hyeon Cho),이지윤(Ji-Yoon Lee),손영보(Young-Bo Sohn),한상익(Sang-Ik Han),신동진(Dongjin Shin),송유천(You-Chun Song),박동수(Dong-Soo Park),여운상(Un-Sang Yeo),오명규(Myeong- Gyu Oh),허연재(Yeon-Jae Hur) 한국육종학회 2016 한국육종학회지 Vol.48 No.3
The amylose contents of rice determine eating quality which is one of the major traits in rice breeding program. To identify the low-amylose gene of the japonica rice cultivar Baegjinju, genetic analysis was conducted using 200 F2 population derived from a cross between the japonica cultivars, Saeilmi and Baegjinju. Individual F2 plants were classified as wild type (translucent grain) and mutant type (dull grain) based on the grain appearance of brown rice. Two hundred F2 plants were segregated into 155 wild type plants and 45 mutant type plants, which fit the 3:1 ratio (x2 = 0.667, df = 1, p = 0.414) and this result indicated the low-amylose gene of Baegjinju is a single recessive gene which controls the amylose contents. Linkage analysis was conducted to localize the low-amylose gene of Baegjinju and fine mapped within an 800-kb interval between 17.5 to 18.8Mb on short arm of chromosome 10. Co-segregated SSR marker, RM25648 was developed and it could be useful for marker-assisted selection and determination of the genetic resource related with amylose contents in rice breeding.
저글루테린 및 저아밀로스 중생종 기능성 벼 ‘건양2호’
이종희(Jong-Hee Lee),이지윤(Ji-Yoon Lee),송유천(You-Chun Song),여운상(Un-Sang Yeo),박노봉(No-Bong Park),김춘송(Choon-Song Kim),손영보(Young-Bo Sohn),박동수(Dong-Soo Park),한상익(Sang-Ik Han),김상열(Sang-Yeol Kim),김우재(Woo-Jae Kim) 한국육종학회 2015 한국육종학회지 Vol.47 No.4
In chronic renal failure, to reduce the burden on the kidneys, it is necessary to provide patients with therapy based on a low-protein diet. To cope with this situation, low and easy to-digest protein rice variety is helpful. ‘Geongyang2’, low glutelins rice cultivar, was developed by the National Institute of Crop Science (NICS), RDA, Miryang, Korea in 2012. ‘Geongyang2’was derived from a cross between ‘Junambyeo’and‘Chugoku 173’ as a source of low glutelin and amylose. The pedigree of ‘Geongyang2’was YR24174-B-B-B-B-46 and designated as the ‘Milyang262’ in 2009. The local adaptability test of ‘Milyang262’ was carried out at six locations from 2010 to 2012. ‘Geongyang2’ is a mid-maturing ecotype with 65cm in culm length and the number of spikelet/panicle and 1,000 grain weight of brown rice were slightly lower compared to those of ‘Nampyeongbyeo’. ‘Geongyang2’ is resistant to bacterial blight and virus disease while susceptible to major insect and pest. The glutelin and amylose contents of ‘Geongyang2’ were 63.1% and 11.5%, respectively. The milled rice yield of ‘Gyeongyang2’ is 4.61MT/ha at the ordinary transplanting of the local adaptability test. This cultivar would be adaptable to the plain paddy field of middle, honam and yeongnam province of Korea under ordinary cropping system.
완전미율이 우수한 조생종 벼 중간모본 “중모1019호”
이종희(Jong-Hee Lee),여운상(Un-Sang Yeo),김춘송(Choon-Song Kim),이지윤(Ji-Yoon Lee),송유천(You-Chun Song),박노봉(No-Bong Park),오성환(Seong-Hwan Oh),김상열(Sang-Yeol Kim),정국현(Kuk-Hyun Jung),김우재(Woo-Jae Kim),손영보(Young-Bo Sohn 한국육종학회 2016 한국육종학회지 Vol.48 No.3
Jungmo1019 early maturing rice variety was developed by the rice breeding team of the Department of Southern Crop, NICS, RDA in 2011. This cultivar was derived from the cross Hwayeongbyeo//Hitomebore/Nampyeongbyeo made in 2005 and the production of doubled haploid rice plant from anther culture in F1 generation. Testing in the replicated yield trial in 2008, a promising line YR25312Acp62 was selected and it was designated as the Milyang246. The early traus plauting local adaptability test of Milyang246 was carried out at three location in 2011 and it was named as Jungmo1019 showing a high head rice ratio and early -maturity eco-type. Number of spikelet/panicle and 1,000 grain weight of brown rice was slightly lower than those of Jopyeongbyeo. This variety is resistant to bacterial blight, rice stripe virus disease but susceptible to major insect and pests. The milled rice yield of Jungmo1019 is 4.52MT per ha at the early transplanting of the local adaptability test. This line should serve as a useful source for improving head rice ratio at early transplanting cultivation in southern plain area.