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A new mid-late maturing rice variety「Subo」with a good grain quality and for direct seeding
Man-Kee Baek,Woon-Chul Shin,Jong-Cheol Ko,Bo-Kyeong Kim,Jeong-Kwon Nam,Ki-Yeong Kim,Mun-Sik Shin,Ki-Yong Ha,Hyeon-Su Park,Hyeon-Jung Kang,So-Hyun Baek,Young-Jun Mo,Jae-Kwon Ko,Woo-Jae Kim,Young-Bok Le 한국육종학회 2013 한국육종학회 심포지엄 Vol.2013 No.07
‘Subo’ is a new japonica rice variety developed by a cross breeding between HR21124-B-59 and HR19567-B-70-3 having a good Phenotype with a multi-resistance and high yield elite line. The new variety developed for direct seeding by the rice breeding team in Rice Breeding and Cultivation Research Division, Department of Rice and Winter Cereal Crop, NICS, RDA in 2012. The heading date of this variety is August 13 and earlier than that of check variety, Nampyeongbyeo, by two days. ‘Subo’ has 72cm of culm length and 104 spikelets per panicle in direct seeding cultivation. This variety showed resistance to bacterial leaf blight and rice stripe virus and have germinating ability in sumerged soil conditions. The milled rice of this variety exhibits translucent and very clear non-glutinous endosperm. ‘Subo’ has much better palatability of cooked rice than that of Nampyeongbyeo. The whole grain rate of milled rice are 86.9% and milled rice recovery of are 74.6%. The yield of ‘Subo’ in direct seeding cultivation is 5.55MT/ha in milled rice. ‘Subo’ could be adaptable to the southern part plain area of Pyeongtaek and southwestern in Korea.
백만기(Man-Kee Baek),박현수(Hyun-Su Park),남정권(Jeong-Kwon Nam),조영찬(Young-Chan Cho),김기영(Ki-Young Kim),김정주(Jeong-Ju Kim),김우재(Woo-Jae Kim),신운철(Woon-Chul Shin),정지웅(Ji-Ung Jeung),김춘송(Choon-Song Kim),정종민(Jong-Min 한국육종학회 2019 한국육종학회지 Vol.51 No.4
‘Yechan’ is a high grain quality mid-late maturing rice cultivar with lodging tolerance and multiple disease resistance. It was a derived from a cross between ‘Hopum’ and ‘Iksan537’ (cultivar name ‘Haepum’). ‘Hopum’ is a high grain quality mid-late maturing rice cultivar with strong lodging tolerance and ‘Haepum’ is a high grain quality medium maturing rice cultivar with multiple disease resistance. To shorten the breeding period, another culture method was applied to the F1 plants. ‘Yechan’ was selected through the pedigree method, yield trials, and local adaptability tests, with a high selection pressure for grain quality, lodging, and disease resistance. The heading date of ‘Yechan’ was August 14, one day later than that of ‘Nampyeong’. ‘Yechan’ is a cultivar tolerant to lodging and it has short culms. It has multiple disease resistance against rice blast, rice stripe virus, and bacterial blight, including the K3a race, the most virulent race in Korea. The yield of ‘Yechan’ was similar to that of ‘Nampyeong’. ‘Yechan’ showed excellent grain appearance, superior taste when cooked, and enhanced milling performance; thus, we concluded that it could contribute to the improvement of Korean japonica rice cultivar quality. ‘Yechan’, a high grain quality mid-late maturing rice cultivar with lodging tolerance and multiple disease resistance, would be suitable for cultivation in the southern plain area in Korea and has been utilized in the breeding programs aimed at enhancing the grain quality and stability for the cultivation of Korean japonica rice (Registration No. 7647).
벼 단인자 계통과 우량 벼품종의 도열병 저항성 분석을 통한 안정 저항성 유전자 탐색
백만기(Man-Kee Baek),박현수(Hyun-Su Park),이창민(Chang-Min Lee),이효정(Hyo-Jeong Lee),정종민(Jong-Min Jeong),안억근(Eok-Keun Ahn),현웅조(Wong-Jo Hyun),이지윤(Ji-Yoon Lee),정오영(O-Young Jeong),정지웅(Ji-Ung Jeung),이점호(Jeom-Ho Lee) 한국육종학회 2021 한국육종학회지 Vol.53 No.3
Rice is the most important staple food in Korea. Rice blast, caused by Magnaporthe oryzae, is one of the most devastating diseasesin the rice-growing world and in Korea. Eighteen major blast resistance genes were screened in 33 leading Korean japonica varieties using44 DNA markers. The 33 leading japonica varieties are cultivated in 659,642 ha (90.4%), and a variety of Samkwang is cultivated widelyon a nation-wide scale. Four resistance genes, Pia, Pib, Pi19, and Pb1, were detected in 10-21 varieties, and the R-genes of Pii, Pish, Pita/Pita-2,Piz/Piz-t, Pi35, and Pi65(t), were present in 2-5 varieties. Five R-genes, Pit, Pi5, Pi9, pi21, and Pi40, were not detected in the Korean japonicarice varieties. A total of six varieties, two mid-late flowering varieties, Ilmi and Saeilmi, a medium flowering variety Gopum; and three earlyflowering varieties Jopyeong, Haedamssal, and Haedeul; were resistant to blast nursery screening over 12 years. A variety of Gopum harboredalleles for Piz/Piz-t, and three early flowering varieties, Jopyeong, Haedamssal, and Haedeul, had extensive loci of the multiple-gene familyPiz/Piz-t, Pi9, and Pi40 on chromosome 6. Two mid-late flowering varieties, Ilmi and Saeilmi, harbored the Pita-2 gene, and Gopum hadPita. In the japonica rice breeding program, an effective means for enhancing stable resistance to blast will be to introduce resistance genesPit, Pi5, Pi9, pi21 and Pi40 which were not identified in Korean japonica rice varieties, and resistance genes Pita/Pita-2, Piz-t/Piz-5, to 2-3R genes among and Pi20 that showed stable resistance in monogenic IRBL lines.
Development of salt-tolerant transgenic rice using OsCBF4 cDNA
So-Hyeon Baek,Eun-Mi Lee,Man-Kee Baek,Woo-Jae Kim,Jong-Ho Park,Ki-Yong Ha,Hyun-Soon Kim,Young-Chan Cho,Jeom-Ho Lee 한국육종학회 2014 한국육종학회 심포지엄 Vol.2014 No.07
This study was conducted to isolate a salt tolerant gene and to develop salt tolerant rice for reclaimed-saline areas through genetic transformation. A rice c/DRE binding factor 4(OsCBF4) cDNA was isolated from rice using RT-PCR. The full-length cDNA of the CBF4 gene consists of 1,429 nucleotides and 274 amino acid residues. In order to develop salt tolerant rice, transgenic rice plants containing the OsCBF4 gene were obtained via Agrobacterium-mediated transformation. The stable incorporation of the OsCBF4 gene into rice genome was confirmed by PCR and Southern analysis. The stable expression of introduced gene was also validated by RT-PCR analysis in T2 plants. Biological assay of T3 progeny of the transgenic plants in Yoshida solution containing 120mM Nacl for 2weeks, confirmed that the OsCBF4 confers salt tolerance to transgenic rice plants. OsCBF4 transgene in the transgenic line CBF4-10 was markedly expressed up to over three-fold in the leaf by 120 mM NaCl treatment. Real-time PCR analysis revealed that the levels of the transgene expression were markedly increased under salt treatment. The transgenic line CBF4-10 which showed highest ability to recover from the saline stress could be used as a potential source for salt tolerance in rice breeding programs
[PB-0015] QTL analysis and mapping of qBBR11, related to field resistant to bacterial blight in rice
Jae-Ryoung Park(Jae-Ryoung Park),Jeonghwan Seo(Jeonghwan Seo),Chang-Min Lee(Chang-Min Lee),Hyeonso Ji(Hyeonso Ji),Man-Kee Baek(Man-Kee Baek),O-Yeong Jeong(O-Yeong Jeong),Hyun-Su Park(Hyun-Su Park) 한국육종학회 2022 한국육종학회 공동학술발표집 Vol.2022 No.-