93-11 × 밀양352 약배양 집단을 이용한 벼 출수기 QTL분석

• Published in: Korean journal of breeding Vol. 52; no. 4; pp. 332 - 341
• Main Author: 이소명(So-Myeong Lee), 강주원(Ju-Won Kang), 조준현(Jun-Hyeon Cho), 이지윤(Ji-Yoon Lee), 신동진(Dongjin Shin), 권영호(Young-Ho Kwon), 차진경(Jin-Kyung Cha), 이샛별(Sais-Beul Lee), 고종민(Jong-Min Ko), 이종희(Jong-Hee Lee)
• Format: Journal Article
• Language: Korean
• Published: 한국육종학회 30.12.2020; The Korean Breeding Society
• Subjects: 농학; QTL; genetic analysis; rice; doubled haploid; days to heading
• ISSN: 0250-3360; 2287-5174
• DOI: 10.9787/KJBS.2020.52.4.332

Rice doubled haploid (DH) lines derived from crosses of the indica cultivar 93-11 and japonica line Milyang352 were used in genetic mapping and QTL analysis studies of days to heading (DTH), an important trait that controls rice yield and biomass. QTL mapping was conducted using the inclusive composite interval mapping method. We used 234 single-nucleotide polymorphic markers in the whole-genome region, including 100 KASP markers and 134 Fluidigm markers, to construct a genetic map. DH populations were raised in Milyang, Korea, over three different periods. Two major DTH QTLs, qDTH3-1 and qDTH7, were detected under natural conditions in Milyang, and explained 14.88%~24.56% and 24.20%~37.39% of the phenotypic variation, respectively, in 93-11 ×Milyang352 DH populations. During three different rice cultivation periods, qDTH3-1 and qDTH7 were repeatedly detected with significant logarithm of the odds scores and phenotypic variability explained. The findings of this study will make a valuable contribution to breeding high-yielding and early-maturing rice in Korea. KCI Citation Count: 0