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벼 저온발아성 관련 양적형질 유전자좌 (QTL) 분석

Quantitative Trait Loci for Low-Temperature Germinability in Rice

강경호|윤경민|권수진|안상낙|정오영|서정필|최해춘|황흥구|정응기
한국육종학회 (The Korean Society of Breeding Science)|2004.12|한국육종학회지 (KOREAN JOURNAL OF BREEDING SCIENCE)|제36권 제5호|pp. 365-370

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참고문헌

주제분류농학

초록

저온발아성과 저온출아성에서 상이한 차이를 보이는 밀양23호와 Stejaree45호를 양친으로 175 유전자재조합 계통(RILs)를 육성하였다. 이 집단을 이용, SSR marker에 의거한 분자유전자지도를 작성하고, 저온발아성과 저온출아성의 변이에 대한 양적형질 유전자좌(QTLs)를 분석하였으며. 그 결과를 요약하면 다음과 같다. 1. 저온발아성과 저온출아성은 정규분포에 가까운 연속변이 분포곡선을 보였으며, 두 형질에서 양친의 범위를 벗어나는 초월변이 계통이 다수 관찰되었다. 2. 93개의 DNA marker로 기본 유전자지도를 완성하였는데 전체 염색체 길이는 1,293 cM, marker간 평균 거리는 14.4 cM이었다. 3. 저온발아성에 관여하는 1개의 QTL, ltg11이 11번 염색체의 RM254-RM206 사이에서 탐색되었고, 이 QTL은 전체 표현형 변이의 12.5%를 설명하였다. 저온출아율에 관여하는 QTL은 탐지되지 않았다.

Abstract

This study was carried out to characterize quantitative trait loci (QTL) related with low temperature germination and emergence in rice. A recombinant inbred line (RILs) population was developed from a cross between a cold-susceptible Tongil-type rice variety, Milyang23, and a cold-tolerant japonica rice variety, Stejaree45 by single seed descent method. The 175 RILs (F8) were evaluated for low temperature germination (13oC) and emergence (15oC). Frequency distribution of RILs for low temperature germination and emergence showed nearly normal distribution suggesting the quantitative nature and analyzed for the polymorphism of SSR markers. A molecular linkage map consisting of 93 SSR markers was constructed to identify QTLs associated with QTL and emergence. The map coverage was 1,293 cM in length with an average interval of 14.4 cM between markers. One QTL for germination at low temperature flanked by two SSR markers RM254 and RM206 on chromosome 11 was detected and this QTL explained 12.5% of the total phenotypic variation. QTL for emergence at low-temperature was not detected. The markers linked to low temperature germination would be useful in selecting for lines with enhanced low temperature germination in a breeding program.

참고문헌 (18)

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  14. "QTL analysis of low temperature germinability in a weedy rice", 31(3), pp.276~279 (1999)
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관련 논문AI추천

벼 내랭성 관련 양적형질 유전자좌(QTL) 분석안상낙, 이종두, Darshan S. Brar, Eung-Gi Jeong, Hung-Goo Hwang, Jong-Rok Son, Jung-Pil Suh, Soo-Jin Kwon, Young-Chan Cho한국육종학회 · 한국육종학회지2006 · 제38권 제5호한아름2호/운광 RIL 집단을 이용한 벼 내냉성 QTL 탐색김태헌, 박동수, 송유천, 신동진, 오명규, 이종희, 이지윤, 조수민, 조준현한국육종학회 · 한국육종학회지2017 · 제49권 제4호벼 종간잡종 근동질계통 이용 저온발아성 및 까락 유전자 분석안상낙, 홍성미, Mi-hee Song, Seung-Joon Lee한국육종학회 · 한국육종학회지2006 · 제38권 제5호벼 담수발아 내성 관련 양적형질 유전자좌 탐색권순욱, 김용철, 장성규한국육종학회 · 한국육종학회지2022 · 제54권 제4호통일형 벼 이앙 후 유묘기 재배안정성 증진을 위한 저온생장성 관련 QTL 탐색강주원, 권순욱, 권영호, 박동수, 이샛별, 이소명, 이종희, 이지윤, 장성규, 조수민, 조준현한국육종학회 · 한국육종학회지2024 · 제56권 제3호‘참동진/영호진미’ 재조합집단을 이용한 수발아와 저온발아성 양적형질 유전자좌 분석박송희, 박재령, 박현수, 서정환, 이건미, 이길응, 이창민, 정오영, 지현소, 진민아한국육종학회 · 한국육종학회지2024 · 제56권 제2호

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