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. 2021 Jul 1;41(7):43.
doi: 10.1007/s11032-021-01236-x. eCollection 2021 Jul.

QTL mapping of yield-related traits in sesame

Hongxian Mei  1 , Yanyang Liu  1 , Chengqi Cui  1 , Chengda Hu  2 , Fuxin Xie  3 , Lei Zheng  4 , Zhenwei Du  1 , Ke Wu  1 , Xiaolin Jiang  1 , Yongzhan Zheng  1 , Qingrong Ma  2
Affiliations

QTL mapping of yield-related traits in sesame

Hongxian Mei et al. Mol Breed. .

Abstract

Improving yield is one of the most important targets of sesame breeding. Identifying quantitative trait loci (QTLs) of yield-related traits is a prerequisite for marker-assisted selection (MAS) and QTL/gene cloning. In this study, a BC1 population was developed and genotyped with the specific-locus amplified fragment (SLAF) sequencing technology, and a high-density genetic map was constructed. The map consisted of 13 linkage groups, contained 3528 SLAF markers, and covered a total of 1312.52 cM genetic distance, with an average distance of 0.37 cM between adjacent markers. Based on the map, 46 significant QTLs were identified for seven yield-related traits across three environments. These QTLs distributed on 11 linkage groups, each explaining 2.34-71.41% of the phenotypic variation. Of the QTLs, 23 were stable QTLs that were detected in more than one environment, and 20 were major QTLs that explained more than 10% of the corresponding phenotypic variation in at least one environment. Favorable alleles of 38 QTLs originated from the locally adapted variety, Yuzhi 4; the exotic germplasm line, BS, contributed favorable alleles to only 8 QTLs. The results should provide useful information for future molecular breeding and functional gene cloning.

Supplementary information: The online version contains supplementary material available at 10.1007/s11032-021-01236-x.

Keywords: Genetic map; QTL; Sesamum indicum L.; Yield-related traits.

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Conflict of interest statement

Conflict of interestThe authors declare no competing interests.

Figures

Fig. 1
Fig. 1
Number of SLAF markers in each segregation pattern. The x-axis indicates eight segregation patterns grouped by genotype encoding rule and the y-axis represents number of SLAF markers
Fig. 2
Fig. 2
Relationships of 13 LGs of the genetic map and 16 pseudo-chromosomes of Zhongzhi No. 13 genome version 1.0
Fig. 3
Fig. 3
Genomic distribution of QTLs for sesame yield-related traits. The black bar on each LG column indicates a SLAF marker. QTLs identified in more than one environment are shown in red, and those detected in only one environment are shown in blue. Major QTLs (with PVE ≥ 10% in at least one environment) are shown in bold
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References

    1. Ashri A. Sesame breeding. In: Janick J, editor. Plant breeding reviews. New York: Wiley; 1998. pp. 179–228.
    1. Ashri A (2007) Sesame (Sesamum indicum L.) In: Singh RJ (ed) Genetic resources, chromosome engineering and crops improvement: oilseed crops, Vol. 4. CRC, Boca Raton, pp 231–289
    1. Bedigian D, Harlan JR. Evidence for cultivation of sesame in the ancient world. Econ Bot. 1986;40:137–154. doi: 10.1007/BF02859136. - DOI
    1. Biabani AR, Pakniyat H. Evaluation of seed yield-related characters in sesame (Sesamum indicum L.) using factor and path analysis. Pakistan J Biol Sci. 2008;11:1157–1160. doi: 10.3923/pjbs.2008.1157.1160. - DOI - PubMed
    1. Burt AJ, Grainger CM, Smid MP, Shelp BJ, Lee EA. Allele mining of exotic maize germplasm to enhance macular carotenoids. Crop Sci. 2011;51:991–1004. doi: 10.2135/cropsci2010.06.0335. - DOI

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