Mapping of Quantitative Trait Loci Controlling Cold Tolerance in an Oryza sativa x O. rufipogon BC1F7 Population
2
조회
0
다운로드
0
인용
0
참고문헌
초록
Abstract
This study was conducted to identify the genomic regions associated with cold tolerance in rice. An RIL population consisting of 120 lines was developed from a cross between the japonica cultivar, Hwayeongbyeo and the wild rice, Oryza rufipoon Griff. Acc.01944. The population was genotyped with 124 SSR markers, providing an average interval size of 15 cM, and evaluated for 6 traits related to cold tolerance in the cold-water irrigate plot (17oC). The RILs were also grown in the control plot to measure the effects of the cold water treatment on heading date and culm length. The RILs showed delayed heading and reduced culm length in the cold-water irrigated plot and the differences in heading date and culm length between two plots were statistically significant. A total of 19 QTLs associated with cold tolerance were identified using single point and interval analysis. The number of QTLs per trait ranged from one to five. Phenotypic variation associated with each QTL ranged from 5.5 to 44.8%. For five (26.3%) of the QTLs identified in this study, the O. rufipogon-derived allele contributed a desirable agronomic effect, and favorable wild alleles were detected for panicle exsertion, days to heading, and culm length associated with the cold water treatment. When compared with previous studies involving interspecific crosses, it can be concluded that O. rufipogon is useful as a source of valuable alleles for rice improvement and that many of the introgressed regions contain genes that have a favorable impact on phenotype in different genetic backgrounds.
참고문헌 (24)
- "QTLs conferring cold tolerance at the booting stage of rice using recombinant inbred lines from a japonica x indica cross", 106, pp.1084~1090
- "QTL clusters reflect character associations in wild and cultivated rice", 104, pp.1217~1228 (2002)
- "Saturated molecular map of the rice genome based on an interspecific backcross population", 138, pp.1251~1274
- "Development of a microsatellite map providing genome-wide coverage in rice", 95, pp.553~567 (1997)
- "Estimation of critical temperature for traits related to cold tolerance in rice", 32, pp.363~368 (2000)
- "Identification of QTLs for domestication-related and agronomic traits in an Oryza sativa x O" (2004), rufipogon BC1F7 population
- "Development of introgression lines of Oryza rufipogon in the background of japonica rice", 20 (2003)
- "Genetic basis of low-temperature-sensitive sterility in indica-japonica hybrids of rice as determined by RFLP analysis", 95, pp.1092~1097 (1997)
- "Development and mapping of 2240 new SSR markers for rice", 9, pp.199~207 (2002)
- "Effects of dwarfing genes from Dee-Geo-Woo-Gen and other varieties on cool temperature tolerance at booting stage in rice", pp.241~254
- "Cold-temperature sensitive mutants at the booting stage of rice", pp.53~57
- "Electonic address: greengenes. cit.cornell.edu port 70; directory ＂Software for genetics", QGene＂., 1997, ~
- "Lowering of eating quality induced by sterility due to cool weather damage in Hokkaido rice varieties", pp.242~247
- "Diallel analysis of cool tolerance at the booting stage in rice varieties from Hokkaido", pp.557~566
- "Development of microsatellite markers and characterization of simple sequence length polymorphism (SSLP) in rice", 252, pp.597~607 (1996)
- "Chromosomal location of quantitative trait loci for cool tolerance at the booting stage in rice variety Norin-PL8", 45(-saito y), pp.337~340 (1995)
- "Mapping quantitative trait loci controlling cool-temperature tolerance at booting stage in temperate japonica rice", 51, pp.191~197 (2001)
- "Mapping and genome organization of microsatellite sequences in rice", 100, pp.697~712 (2000)
- "Mapping quantitative trait loci for yield components and morphological traits in an advanced backcross population between Oryza rufipogon and the Oryza sativa cultivar Jefferson", 107, pp.479~493 (2003)
- "Identification of trait-improving quantitative trait loci alleles from a wild rice relative, Oryza rufipogon", 150, pp.899~909 (1998), Genetics
- "Identification of genetic factors controlling domestication-related traits of rice using an F2 population of a cross between Oryza sativa and O", 98, pp.243~251 (1999)
- "Diversity in the Oryza genus", 6, pp.139~146
- "Physiological and morphological adaptability of rice varieties to climate", pp.67~83
- "Identification of quantitative trait loci controlling heading date in rice using a high-density linkage map", 95, pp.1025~1032 (1997)