벼멸구 저항성 여교잡 집단의 등숙특성 QTL 분석

• 영문명: QTL Analysis for Ripening Traits of BHP Resistant Backcross Inbred Lines in Rice
• 발행기관: 한국육종학회
• 저자명: 이종희(Jong Hee Lee) 여운상(Un Sang Yeo) 곽도연(Do Yeon Kwak) 박동수(Dong Soo Park) 오병근(Byeong Geun Oh) 구연충(Yeon Chung Ku) 김호영(Ho Yeong Kim) 손재근(Jae Keun Sohn)
• 간행물 정보: 『한국육종학회지』Vol.37 No.5, 295~299쪽, 전체 5쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2005.10.30

영문 초록

In order to identify the relationship between a brown planthopper (Nilaparvata lugens Stal) resistance gene Bph1 and ripening traits, we conducted the QTL analysis using 130 backcross inbred lines (BC5F5BIL) derived from a cross of the BPH susceptible Japonica cultivar, ‘Nagdongbyeo’ as the recurrent parent and Tongil-type resistant cultivar ‘Samgangbyeo’ as a donor parent. Although this population was obtained from 5 time of backcross, BPH resistant and susceptible lines differed significantly in grain filling ratio, head rice ratio of brown rice and number of spikelets per panicle. Five SSR markers on chromosome 12 detected in the introgressed chromosome segment of resistant donor, and two QTLs related with grain filling ratio (gfr12) and brown head rice ratio (bhr12) were detected in the marker between RM3813 and RM5609 explaining 23% and 21% of the total variance, respectively. Grain filling ratio and head rice ratio of brown rice were increased by ‘Samgangbyeo’ allele. This result suggests that high quality variety carrying the BPH resistance gene could be developed by combination of MAS and backcross in rice breeding.

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키워드

Brown planthopper (BPH) Grain filling ratio Head rice ratio QTLs Rice (Oryza sativa L.)