Mapping Quantitative Trait Loci for Heading Date and Awn Length Using an Advanced Backcross Line from a Cross between Oryza sativa and O. minuta

Linh, Le-Hung; Jin, Fengxue; Kang, Kyung-Ho; Lee, Young-Tae; Kwon, Soo-Jin; Ahn, Sang-Nag

doi:10.1270/jsbbs.56.341

Cited by 10 publications

(18 citation statements)

References 28 publications

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“…Beneficial alleles from wild rice have been reported in previous QTL studies (Jin et al 2005;Linh et al 2006;Tian et al 2006;Thomson et al 2003;Xiao et al 1998).…”

Section: Discussionmentioning

confidence: 59%

“…Based on conventional linkage analysis, four awnness genes, An1, An2, An,3 and A4 were identified on chromosomes 4, 5, 3, and 8, respectively (Sato et al 1996). With the development of molecular markers, some genes/QTLs related to awn were mapped using a variety of interspecific populations (Cai and Morishim et al 2002;Kurakazu et al 2001;Lee et al 2005;Linh et al 2006;Onishi et al 2007; Thomson et al 2003).…”

Section: Introductionmentioning

confidence: 99%

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Mapping quantitative trait loci for awnness and yield component traits in isogenic lines derived from an Oryza sativa / O. rufipogon cross

Jin

Kim

et al. 2009

J. Crop Sci. Biotechnol.

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An advanced backcross line, HR9118, was produced from a single plant of BC2F3 families derived from a cross between Oryza rufipogon Griff. (IRGC 105491) as a donor parent and the O. sativa subsp. japonica cv. Hwaseongbyeo as a recurrent parent. Although HR9118 resembled Hwaseongbyeo, several traits were different from those of Hwasoengbyeo, including days to heading, plant height, and awn. These differences between Hwasongbyeo and HR9118 could be attributed to introgressed O. rufipogon chromosome segments into HR9118. Introgression analysis using 460 SSR markers revealed that three O. rufipogon-specific chromosome segments were detected in HR9118 genome. F2:3 populations derived from the cross between Hwaseongbyo and HR9118, consisting of 340 F2 plants and 137 F3 lines, were used to map and characterize QTLs for 12 traits. QTL analysis identified a total of 17 QTLs in the F2:3 populations. Of these, seven QTLs were shared by the F2 and F3 populations, whereas the other ten QTLs were identified only in the F3 population. In seven (41.2%) QTLs identified in this study, the O. rufipogon-derived alleles contributed desirable agronomic effects despite the overall undesirable characteristics of the wild phenotype. Each of three O. rufipogon introgressed segments contained multiple QTLs, indicating linkage and/or pleotropic effects. A cluster of eight QTLs was detected on chromosome 8 including a major QTL for awn. Substitution mapping using F2 population indicated that awn8 was located within an interval between two SSR makers RM23326 and RM23356 which are 590 kb apart. SSR markers tightly linked to QTLs for yield components detected in this study will facilitate cloning of the gene underlying this QTL as well as marker-assisted selection for variation in grain weight in an applied breeding program.

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“…Beneficial alleles from wild rice have been reported in previous QTL studies (Jin et al 2005;Linh et al 2006;Tian et al 2006;Thomson et al 2003;Xiao et al 1998).…”

Section: Discussionmentioning

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Mapping quantitative trait loci for awnness and yield component traits in isogenic lines derived from an Oryza sativa / O. rufipogon cross

Jin

Kim

et al. 2009

J. Crop Sci. Biotechnol.

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“…RM81A is linked with grain yield per plant, 1000-grain weight, and plant height (Cui et al, 2004), RM253 is associated with percent head rice, amylase content, alkali spreading score, protein content, grain length, heading date, awn length, days to maturity and grain length/width ratio (Xiao et al, 1996;Linh et al, 2006), with RM244 associated with fertility restorer genes (Jing et al, 2000), RM232 associated with 1000-grain weight, panicles per plant, panicle length, grains per panicle, and grain yield per plant (Tan et al, 2007), and RM234 associated with days to heading, days to maturity and maximum root length (Thomson et al, 2003;Miyata et al, 2007). There existed significant correlations (P < 0.01) between P content in brown rice and 11 traits (protein content, rice width, panicle length, filled grains per panicle, blighted grains per panicle, seed setting rate, plant height, tillers per plant, days to heading, grain width, and thickness) and between K content in brown rice and 8 traits (amylose contents, alkali spreading score, gel consistency, protein content, plant height, tillers per plant, grain thickness, and panicle length) (Zeng et al, 2005).…”

Section: Size Of Alleles For Ssr Markers Associated With Elemental Comentioning

confidence: 99%

Correlation between allele sizes of microsatellites and phenotypic variations in rice landraces

Zeng

Zhang

ShuMing

et al. 2009

Front. Agric. China

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Yunnan is one of the largest centers of genetic diversity in the world. Allele size of microsatellites associated with phenotypic traits of rice landraces in Yunnan, Southwest China, was investigated based on 20 SSR markers and 23 phenotypic traits, as well as eight mineral elements in brown rice within the core collection of 629 accessions; and there was a significant correlation for 182 (r = 0.083 * -0.438 ** ) of 620 pairs among these markers and traits, as well as elements. Surprisingly, there was a significant correlation for 94 of 180 pairs between the allele size of microsatellites and grain traits, and 48 of 160 pairs between allele size of microsatellites and panicle traits. In these rice landraces, 309 alleles were detected, with an average of 15.5 alleles per marker, ranging from 5 (RM60) to 40 (RM257). There was a significant correlation between the allele size of 20 SSR markers and some phenotypic traits, such as the significant correlation of 17 (r = -0.085 * -0.438 ** ) pairs between the allele size of RM224 and 23 phenotypic traits, as well as eight elements. The allele size of microsatellites was more associated with grain or panicle traits than that of plant traits or element contents in brown rice. Grain length/width ratio and 1-2 internode length, as indica-japonica classification traits, in which two traits were closely associated with the allele size of 14 SSR markers ranging from 0.089 * to -0.438 ** . Therefore, allele size of SSRs was associated with phenotypic traits (especially in grain traits), as well as elemental contents in brown rice.

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“…2002). QTLs related with days to heading and awn length have already been mapped using one of the introgression lines, WH29001 (Linh et al. 2006).…”

mentioning

confidence: 99%

“…The procedures of population development are described as in the previous papers (Kang et al. 2002, Linh et al. 2006).…”

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confidence: 99%

Introgression of a quantitative trait locus for spikelets per panicle from Oryza minuta to the O. sativa cultivar Hwaseongbyeo

et al. 2008

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A new QTL for spikelets per panicle (SPP) was detected on the long arm of chromosome 7 in an F 2 population derived from a cross between the japonica cultivar Hwaseongbyeo and WH29001. WH29001, an advanced backcross line was developed by introgressing chromosomal segments from an accession of O. minuta (2n = 48, BBCC, Acc. no. 101141) into the O. sativa subsp. japonica cv. Hwaseongbyeo. The O. minuta allele increased SPP in the Hwaseongbyeo background despite the fact that O. minuta was the small panicle parent. Using F 3 and F 4 progenies, spp7 was validated and mapped to a 2.3 Mb region in the interval between the SSR markers RM445 and RM21615 based on the japonica genome sequence. A yield trial using F 4 lines indicated that the lines carrying an O. minuta chromosome segment across the entire spp7 target region out-yielded its sister lines containing Hwaseongbyeo chromosome in the target region and Hwaseongbyeo by 14.3% and 15.9%, respectively. Increase in SPP in WH29001 was mainly because of the increase in primary branches per panicle. The locus, spp7 is of particular interest because of its independence from undesirable height and flowering time. SSR markers tightly linked to the spp7 will facilitate cloning of the gene underlying this QTL as well as marker-assisted selection for variation in SPP in an applied breeding program.

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Mapping Quantitative Trait Loci for Heading Date and Awn Length Using an Advanced Backcross Line from a Cross between Oryza sativa and O. minuta

Cited by 10 publications

References 28 publications

Mapping quantitative trait loci for awnness and yield component traits in isogenic lines derived from an Oryza sativa / O. rufipogon cross

Mapping quantitative trait loci for awnness and yield component traits in isogenic lines derived from an Oryza sativa / O. rufipogon cross

Correlation between allele sizes of microsatellites and phenotypic variations in rice landraces

Introgression of a quantitative trait locus for spikelets per panicle from Oryza minuta to the O. sativa cultivar Hwaseongbyeo

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