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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2008.1
- 수록면
- 257 - 263 (7page)
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초록· 키워드
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Improvement of the macro- and micro-elements density of rice (Oryza sativa L.) is gradually
becoming a new breeding objective. In this study, the genomic regions associated with potassium, calcium,
magnesium and iron content in rice grain were identified and characterized by using a doubled haploid (DH)
population. Fifty-six simple sequence repeat (SSR) and one hundred and twelve sequence tagged site (STS)
markers were selected to construct the genetic linkage map of the DH population with a full length of
1808.3cM scanning 12 rice chromosomes. Quantitative trait loci (QTLs) were detected, and QTL effects and
QTL interactions were calculated for five traits related to macro- and micro-elements in the DH population
from a cross between ‘Samgang’ (Tongil) and ‘Nagdong’ (Japonica). Twelve QTLs were located on five
chromosomes, consisting of two QTLs for potassium, three QTLs for calcium, two QTLs for magnesium, one
QTL for iron content and four QTLs for the ratio of magnesium to potassium (Mg/K). Among them, qca1.1
was detected on chromosome 1 with an LOD value of 8.58 for calcium content. It explained 27% of
phenotype variations with increasing effects from ‘Samgang’ allele. Furthermore, fifteen epistatic combinations
with significant interactions were observed on ten chromosomes for five traits, which totally accounted for
4.19% to 12.72% of phenotype variations. The screening of relatively accurate QTLs will contribute to increase
the efficiency of marker-assisted selection (MAS), and to accelerate the establishment of near-isogenic lines
(NILs) and QTL pyramiding.
목차
등록된 정보가 없습니다.
참고문헌 (16)
참고문헌 신청
Connolly E. L. / 2002 / Expression of the IRT1 metal transporter is controlled by metals at the levels of transcript and protein accumulation / Plant Cell 14 : 1347 ~ 1357
Ghandilyan A. / 2006 / Progress in the genetic understanding of plant iron and zinc nutrition / Physiol Planta 126 : 407 ~ 417
Graham R. / 1999 / Breeding for micronutrient density in edible portions of staple food crops: conventional approaches / Field Crops Res 60 : 57 ~ 80
Gregorio G. B. / 2000 / Breeding for trace mineral density in rice / Food Nutr Bull 21 : 382 ~ 386
Hall J. L. / 2003 / Transition metal transporters in plants / J Exp Bot 54 : 2601 ~ 2613
Ghandilyan A. / 2006 / Progress in the genetic understanding of plant iron and zinc nutrition / Physiol Planta 126 : 407 ~ 417
Graham R. / 1999 / Breeding for micronutrient density in edible portions of staple food crops: conventional approaches / Field Crops Res 60 : 57 ~ 80
Gregorio G. B. / 2000 / Breeding for trace mineral density in rice / Food Nutr Bull 21 : 382 ~ 386
Hall J. L. / 2003 / Transition metal transporters in plants / J Exp Bot 54 : 2601 ~ 2613
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