지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 30 - 38 (9page)
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초록· 키워드
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Grain weight (GW) is one of the most important targets for grain yield in rice breeding. In previous studies, twoquantitative trait loci (QTLs) for grain weight, tgw2 and gw8.1, were identified using progeny derived from crosses between thejaponica cultivar Hwaseong and Oryza grandiglumis, and between Hwaseong and O. rufipogon (IRGC 105491), respectively. The wildalleles increased GW at two loci. An F2 population (186 plants) was developed by crossing two near isogenic lines (NILs) harboringtgw2 and gw8.1 to test their interaction. Simple sequence repeat (SSR) markers tightly linked to the two QTLs were used to check thegenotype of the F2 population. Based on the genotype at the two loci, tgw2 and gw8.1, the F2 plants were classified into 9 groups witha combination of three genotypes at each of the two loci. Two-way ANOVA revealed no interaction between the 2 QTLs in the F2population. The 1,000 grain weight (TGW) of homozygous plants with wild alleles at the two loci was significantly higher than that ofplants with a single QTL in the F2 and F3 lines. These results indicate that two QTLs act additively, in distinct or complementarypathways, to control grain weight. Based on these results, it is desirable to pyramid the two QTLs into a single line, since thedouble-QTL line displayed further increase of TGW in the Hwaseong background.
목차
등록된 정보가 없습니다.
참고문헌 (24)
참고문헌 신청
Causse MA / 1994 / Saturated molecular map of the rice genome based on an interspecific backcross population / Genetics 138(4):1251~1174
Cui KH / 2003 / Molecular dissection of the genetic relationships of source-sink and transport tissue with yield traits in rice / Theor. Appl. Genet 106:649~658
Fan C / 2006 / GS3, a major QTL for grain length and weight and minor QTL for grain width and thickness in rice, encodes a putative transmembrane protein / Theor. Appl. Genet 112:1164~1171
Ishimaru K. / 2003 / Identification of a locus increasing rice yield and physiological analysis of its function / Plant Physiol 133:1083~1090
Jin FX / 2011 / Detection of epistatic interaction of two QTLs, gw8.1 and gw9.1, underlying grain weight using nearly isogenic lines / Breeding Sci 61:69~75
Cui KH / 2003 / Molecular dissection of the genetic relationships of source-sink and transport tissue with yield traits in rice / Theor. Appl. Genet 106:649~658
Fan C / 2006 / GS3, a major QTL for grain length and weight and minor QTL for grain width and thickness in rice, encodes a putative transmembrane protein / Theor. Appl. Genet 112:1164~1171
Ishimaru K. / 2003 / Identification of a locus increasing rice yield and physiological analysis of its function / Plant Physiol 133:1083~1090
Jin FX / 2011 / Detection of epistatic interaction of two QTLs, gw8.1 and gw9.1, underlying grain weight using nearly isogenic lines / Breeding Sci 61:69~75
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