바스마티 품종을 활용한 벼 종자 크기 관련 양적형질 유전자좌 분석

• 영문명: QTL Analysis Related to Grain Size Using the Population Derived from a Cross Between Hopum and Basmati
• 발행기관: 한국육종학회
• 저자명: 임다은 장성규 김백기 서정환 키쇼르 고희종 권순욱
• 간행물 정보: 『한국육종학회지』Vol.55 No.2, 118~125쪽, 전체 8쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2023.06.30

영문 초록

The grain size and shape have a significant impact on the grain quality and yield of rice. Additionally, due to the globalization ofthe rice market, there is a demand for rice varieties of various sizes. In this study, we analyzed quantitative trait loci (QTL) associated withgrain length (GL), grain width (GW), grain thickness (GT) and ratio of length-to-width (RLW) using 149 F2 plants obtained from a cross betweenHopum and Basmati 370. To construct a linkage map, we utilized 89 Fluidigm SNP markers, which covered a span of 1,116 cM of F2 population. Nine QTLs associated with four traits were identified on chromosomes 2, 3, 5, and 7. One major QTL on chromosome 3 accounted for43.2% of the phenotypic variation in GL. Additionally, QTLs named qGW2 and qGW5 on chromosomes 2 and 5 were detected for GW,explaining 10.4% and 18.6% of the phenotypic variation, respectively. Three QTLs for GT were found on chromosomes 2, 5, and 7, explaining9.9%, 12.9%, and 9.9% of phenotypic variation, respectively. These QTLs offer potential applications in breeding programs using Basmati370 to develop long and slender grain japonica varieties.

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키워드

rice grain size QTLs