벼흰잎마름병 저항성 유전자 집적 고품질 중만생 벼 ‘신진백’

• 영문명: Bacterial Blight Resistance Genes Pyramided in Mid-Late Maturing Rice Cultivar ‘Sinjinbaek’ with High Grain Quality
• 발행기관: 한국육종학회
• 저자명: 박현수(Hyun-Su Park) 김기영(Ki-Young Kim) 백만기(Man-Kee Baek) 조영찬(Young-Chan Cho) 김보경(Bo-Kyeong Kim) 남정권(Jeong-Kwon Nam) 신운철(Woon-Chul Shin) 김우재(Woo-Jae Kim) 고종철(Jong-Cheol Ko) 김정주(Jeong-Ju Kim) 정종민(Jong-Min Jeong) 정지웅(Ji-Ung Jeung) 이건미(Keon-Mi Lee) 박슬기(Seul-Gi Park) 이창민(Chang-Min Lee) 김춘송(Choon-Song Kim) 서정필(Jung-Pil Suh) 이점호(Jeom-Ho Lee)
• 간행물 정보: 『한국육종학회지』Vol.51 No.3, 263~276쪽, 전체 14쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2019.09.30

영문 초록

‘Sinjinbaek’ is a bacterial blight (BB)-resistant, mid-late maturing rice cultivar with high grain quality. To diversify the resistance genes and enhance the resistance of Korean rice cultivars against BB, ‘Sinjinbaek’ was developed from a cross between ‘Iksan493’ (cultivar name ‘Jinbaek’) and the F1 cross between ‘Hopum’ and ‘HR24670-9-2-1’ (‘HR24670’). ‘Jinbaek’ is a BB-resistant cultivar with two BB resistance genes, Xa3 and xa5. ‘Hopum’ is a high grain quality cultivar with the Xa3 resistance gene. ‘HR24670’ is a near-isogenic line that carries the Xa21 gene, a resistance gene inherited from a wild rice species O. longistaminata, in the genetic background of japonica elite rice line ‘Suweon345’. ‘Sinjinbaek’ was selected through the pedigree method, yield trials, and local adaptability tests. Using bioassay for BB races and DNA markers for resistance genes, three resistance genes, Xa3, xa5, and Xa21, were pyramided in the ‘Sinjinbaek’ cultivar. ‘Sinjinbaek’ exhibited high-level and broad-spectrum resistance against BB, including the K3a race, the most virulent race in Korea. ‘Sinjinbaek’ is a mid-late maturing rice cultivar tolerant to lodging. It has multiple disease resistance against BB, rice blast, and stripe virus. The yield of ‘Sinjinbaek’ was similar to that of ‘Nampyeong’. ‘Sinjinbaek’ showed excellent grain appearance, good taste of cooked rice, and enhanced milling performance, and we concluded that it could contribute to improving the quality of BB-resistant cultivars. ‘Sinjinbaek’ was successfully introgressed with the Xa21 gene without the linkage drag negatively affecting its agronomic characteristics. ‘Sinjinbaek’ improved the resistance of Korean rice cultivars against BB by introgression of a new resistance gene, Xa21, as well as by pyramiding three resistance genes, Xa3, xa5, and Xa21. ‘Sinjinbaek’ would be suitable for the cultivation in BB-prone areas since it has been used in breeding programs for enhancing plants’ resistance to BB (Registration No. 7273).

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키워드

Sinjinbaek Rice Bacterial blight Resistance gene Xa21 Pyramiding