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밀양23호/Oryza glaberrima 조합 이입계통의 내건성 특성 평가

Evaluation of Introgression Lines for Drought Tolerance Derived from a Cross Between the Oryza Sativa Cultivar Milyang 23 and O. glaberrima

이현숙|김동민|안상낙|강주원|상세티
한국육종학회 (The Korean Society of Breeding Science)|2015.03|한국육종학회지 (KOREAN JOURNAL OF BREEDING SCIENCE)|제47권 제1호|pp. 20-28|DOI http://dx.doi.org/10.9787/KJBS.2015.47.1.020

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키워드

RiceDrought toleranceQTLIntrogression linesO. glaberrima
주제분류농학

초록

본 연구에서는 밀양23호의 배경에 O. glaberrima의 특정염색체단편을 가지는 55 이입계통의 내건성 관련 형질을 조사하여 변이를 검정하고 내건성이 향상된 4 계통을 선발하였다. 특히 IL55는 유묘기, 영양생장기 그리고 생식생장기에서 반복친인 밀양23호에 비해 조사된 내건성 형질에서 우수한 특성을 보였으며 내건성 관련 유전자의 분석 및 교배모본으로 이용될 수 있을 것이다. 이입계통들은 밀양23호의 유전적 배경에 각 계통마다 서로 다른 O. glaberrima 단편이 이입된 계통으로, 이 집단은 O. glaberrima에서 유래된 내재해성 및 작물학적으로 유용한 유전자의 탐색에 효율적인 도구가 될것이다.

Abstract

We generated 55 introgression lines via backcrosses using Milyang23 as the recurrent parent and Oryza glaberrimaas the donor. 141 SSR markers were used to genotype 55 introgression lines. The 55 introgression lines with Milyang23 wereevaluated for physiological traits; fresh shoot weight (FSW), fresh root weight (FRW) and dry shoot weight (DSW) under thecontrol and 30% PEG-treated condition. Three lines showing significant difference with Milyang23 were selected for furtheranalysis. Three lines had four, four and two O. glaberrima homozygous segments, respectively. IL9 performed better thanMilyang23 in all traits measured in the 30% PEG-treated condition. IL9 possessed four O. glaberrima introgressions onchromosomes 1, 2, 6 and 7. IL12 performed better than Milyang23 in FSW and FRW. IL55 contains two O. glaberrimaintrogressions on chromosomes 2 and 6. Three lines shared the O. glaberrima segment delimited by markers RM133-RM225 atchromosomes 6. This region corresponds to the QTL region for drought tolerance reported by other previous studies. AlthoughIL9 and IL12 showed improved drought tolerance at the seedling and vegetative stage, they performed poor under the droughtstress at the reproductive stage implying that the level of drought tolerance differs according to the growth stage in rice. IL55had significantly higher no. of the total grain than Milyang 23. This result seems to indicate that IL55 will be a good resourcefor drought tolerance breeding. The population would be useful in developing drought tolerant lines in the breeding program.

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관련 논문AI추천

한국 기상 조건에서 O. sativa와 O. glaberrima의 농업 특성 분석박송희, 박재령, 박현수, 서정환, 이건미, 이근표, 이수경, 이창민, 정오영, 진민아, Ebrima Jallow한국육종학회 · 한국육종학회지2024 · 제56권 제2호밀양23호/O. rufipogon 교잡 유래 근동질유전자 계통 이용 QTLs 분석안상낙, 양세준, 이영태, 정오영, 홍성미, Jung-Pil Suh, Ju-Won Kang, Nguyen-Thi Hang한국육종학회 · 한국육종학회지2006 · 제38권 제5호QTL Mapping of Agronomic Traits in an Advanced Backcross Population froma Cross between Oryza sativa L. cv. Milyang 23 and O. glaberrimaChang-Sik Oh, Dong-Min Kim, Ji-Min Oh, Jung-Pil Suh, Ju-Won Kang, Sang-Nag Ahn한국육종학회 · 한국육종학회지2008 · 제40권 제3호벼 종간잡종 유래 근동질 유전자계통 이용 종자중 관여 유전자 분석강주원, 안상낙, 윤여태, 양바오로한국육종학회 · 한국육종학회지2011 · 제43권 제4호QTL Mapping of Agronomic Traits Using an Introgression Line Population Derived from an Intersubspecific Cross in Rice박인규, 안상낙, Chang-Sik Oh, Dong-Min Kim한국육종학회 · 한국육종학회지2010 · 제42권 제5호Production and Evaluation of Agronomic Characters of Introgression Lines from the Cross of Hwaseongbyeo x O. minuta in Rice강경호, 김광호, 안상낙, 정오영, 최임수, Eung-Gee Jeong, Hung-Goo Hwang한국육종학회 · 한국육종학회지2002 · 제34권 제2호

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