Mapping of QTLs for percentage of exserted stigma in rice

YingDe, Deng; Ying, Jie‐Zheng; Shi, Yuanyuan; Ceng-lin, Xiao; Zhang, Haiqing

doi:10.3724/sp.j.1238.2010.00373

Cited by 13 publications

(12 citation statements)

References 7 publications

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“…On chromosome 1, qSER-1a and qSER-1b are novel loci, in which region no other QTLs for SER were reported previously. On chromosome 3, qSER-3a was located in the QTL cluster of qES3 (Miyata et al 2007), PES-3 (Yue et al 2009), qSPE3 (Feng et al 2010) and qSSE3 (Li et al 2014a). qSER-3b was mapped in the region locating of qTSE-3b (Li et al 2014b) and qSER-3.2 (Xu et al 2019).…”

Section: Discussionmentioning

confidence: 99%

“…qSER-3b was mapped in the region locating of qTSE-3b (Li et al 2014b) and qSER-3.2 (Xu et al 2019). On chromosome 5, the region of qSER-5 covered those of qPEST-5 (Li et al 2001), qPES-5 (Deng et al 2010), qTSE-5a (Li et al 2014b), TSE (Zhou et al 2017a) and qSER-5.1 (Xu et al 2019). On chromosome 9, the qSER-9 region overlapped partly with the segment of qPES-9 from T821B, an introgression line from O. longistaminata (Li et al 2010).…”

Section: Discussionmentioning

confidence: 99%

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Substitution mapping of the major quantitative trait loci controlling stigma exsertion rate from Oryza glumaepatula

Tan

Zou

Zheng

et al. 2020

Preprint

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Background: Stigma exsertion rate (SER) is a key determinant for the outcrossing ability of male sterility lines (MSLs) in hybrid rice seed production. In the process of domestication, the outcrossing ability of cultivated rice varieties decreased, while that of wild Oryza species kept strong. Here, we detected the quantitative trait loci (QTLs) controlling SER using a set of single-segment substitution lines (SSSLs) derived from O. glumaepatula , a wild Oryza species. Results: Seven QTLs for SER were located on 5 chromosomes. qSER-1a and qSER-1b were located on chromosome 1. qSER-3a and qSER-3b were mapped on chromosome 3, and qSER-3b was further located at an estimated interval of 898.8kb by secondary substitution mapping. qSER-5 , qSER-9 and qSER-10 were identified on chromosomes 5, 9 and 10, respectively, and qSER-9 was delimited to an estimated region of 551.9kb by secondary substitution mapping. The additive effects of the 7 QTLs ranged from 10.6% to 14.8%, which were higher than those of most loci for SER reported previously. Conclusions: qSER-1a and qSER-1b are novel loci for SER on chromosome 1. All of the 7 QTLs have major effects on SER. The major QTLs of SER will help to develop MSLs with strong outcrossing ability.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Substitution mapping of the major quantitative trait loci controlling stigma exsertion rate from Oryza glumaepatula

Tan

Zou

Zheng

et al. 2020

Preprint

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“…We detected qSER3 and qSER8, two clearly dominant QTLs for stigma exsertion. qSER8 was mapped near qPES-8, which was detected as a QTL for stigma exsertion using a doubled haploid population derived from japonica and indica varieties (Deng et al 2010). Although qSER8 and qPES-8 were detected in different materials, they might be the same QTL.…”

Section: Relationship Between the Detected Qtls And Grain Shapementioning

confidence: 99%

Detection of dominant QTLs for stigma exsertion ratio in rice derived from <i>Oryza rufipogon</i> accession ‘W0120’

Bakti

Tanaka

2019

Breed. Sci.

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Stigma exsertion can enhance the outcrossing fertility in rice. Dominant genes for this trait are expected to be essential for the effective application of a novel outcrossing-based breeding system that uses male sterility in rice, which is normally autogamous. Because reduction of stigma exsertion is a domestication trait, we screened wild rice species as possible donors of genes or QTLs for stigma exsertion. We used in silico image-based screening and selected the Oryza rufipogon accession 'W0120'. A single F 1 individual derived from a cross between the japonica rice cultivar 'Akidawara' and 'W0120' was used to generate F 2 and BC 1 F 1 populations. QTL analysis performed using 114 F 2 individuals detected QTLs on chromosomes 2, 3, 4, 8, and 11. Only two major QTLs on chromosomes 3 and 8 showed higher degrees of dominance. On the other hand, there were no QTLs near GS3, which is well known as a gene for stigma exsertion. Validation of these QTLs using 188 BC 1 F 1 individuals provided clear evidence for their dominance. Genotypes of the markers nearest to the two QTLs were also related to grain length. We expect the genes responsible for these QTLs to be promising tools for improving outcrossing-based breeding in rice.

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“…, Deng et al. ). Among the QTLs identified, a major QTL repeatedly detected on chromosome 3 was confirmed to be the grain size gene GS3 that controls both stigma length and exsertion (Yamamoto et al.…”

mentioning

confidence: 99%

“…A male sterile line with high stigma exsertion is expected to trap more pollen, thus improving the seedsetting rate or hybrid seed production efficiency (Tian 1993, Lin et al 2006. Many studies have shown that stigma exsertion rate in rice is a complex quantitative trait and is governed by many QTLs (Li et al 2001, Yamamoto et al 2003, Yu et al 2006, Yue et al 2009, Deng et al 2010). Among the QTLs identified, a major QTL repeatedly detected on chromosome 3 was confirmed to be the grain size gene GS3 that controls both stigma length and exsertion (Yamamoto et al 2003, Miyata et al 2007, Takano-Kai et al 2011.…”

mentioning

confidence: 99%

Mapping of minor quantitative trait loci (QTLs) conferring fertility restoration of wild abortive cytoplasmic male sterility and QTLs conferring stigma exsertion in rice

Feng

et al. 2014

Plant Breeding

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Cytoplasmic male sterility (CMS) hybrid rice has made a great contribution to the increase of rice yield globally. To facilitate the development of high-quality pairs of the wild abortive (WA) male sterile and maintainer lines, the genetic basis of fertility restoration of WA-CMS and stigma exsertion was investigated in this study using a testcross population with the WA-CMS background. Seed-setting rate and stigma exsertion rate were used as the indicators of the two traits, respectively. Results showed that four minor QTL regions from 9311 were responsible for the variation of seed-setting rate, while a few minor QTLs and epistatic QTL pairs influenced stigma exsertion rate. These results would be of great use in the development of high-quality pairs of WA male sterile and maintainer lines in rice.

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Mapping of QTLs for percentage of exserted stigma in rice

Cited by 13 publications

References 7 publications

Substitution mapping of the major quantitative trait loci controlling stigma exsertion rate from Oryza glumaepatula

Substitution mapping of the major quantitative trait loci controlling stigma exsertion rate from Oryza glumaepatula

Detection of dominant QTLs for stigma exsertion ratio in rice derived from <i>Oryza rufipogon</i> accession ‘W0120’

Mapping of minor quantitative trait loci (QTLs) conferring fertility restoration of wild abortive cytoplasmic male sterility and QTLs conferring stigma exsertion in rice

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