2020
DOI: 10.1270/jsbbs.19144
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Analysis of quantitative trait loci for fertility restoration in seven F<sub>2</sub> populations derived from sorghum F<sub>1</sub> hybrids bred in Japan

Abstract: To clarify the genetic mechanisms of fertility restoration in sorghum F 1 hybrids produced in Japan ('Ryokuryu', 'Hazuki', 'Haretaka', 'Natsuibuki', 'Hanaaoba', 'Akidachi' and 'Kazetachi'), we analyzed QTLs for fertility restoration using seven F 2 populations derived from those hybrids. By QTL mapping with a series of SSR markers, we detected three major QTLs for fertility restoration. These data and the results of haplotype analysis of known fertility restorer (Rf) genes showed that qRf5, corresponding to th… Show more

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Cited by 5 publications
(15 citation statements)
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“…The Rf5 region contains genes encoding seven PRR proteins (Jordan et al, 2011). We designed the Rf5‐1 and Rf5‐2 DNA markers by comparing sequences and found that nine cultivars had Rf5 , including five restorer cultivars (‘JN503,’ ‘Daikoukaku,’ ‘JN43,’ ‘SDS7444,’ and ‘Senkinshiro’), consistent with the phenotypes in crossing experiments (Kiyosawa et al, 2020). In the NIAS core collection, Rf1 and Rf2 were rare (Table 4, Panel C).…”
Section: Resultsmentioning
confidence: 81%
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“…The Rf5 region contains genes encoding seven PRR proteins (Jordan et al, 2011). We designed the Rf5‐1 and Rf5‐2 DNA markers by comparing sequences and found that nine cultivars had Rf5 , including five restorer cultivars (‘JN503,’ ‘Daikoukaku,’ ‘JN43,’ ‘SDS7444,’ and ‘Senkinshiro’), consistent with the phenotypes in crossing experiments (Kiyosawa et al, 2020). In the NIAS core collection, Rf1 and Rf2 were rare (Table 4, Panel C).…”
Section: Resultsmentioning
confidence: 81%
“…The causal mutations in the restorer genes Rf1 ( Sobic.008G147400 ) and Rf2 ( Sobic.002G057050 ) for CMS have not yet been identified. Based on Rf phenotype in crossing experiments, phylogenetic trees, and sequence comparison of the Rf1 gene, we designed the DNA markers Rf1‐1 to Rf1‐6 to check for SNPs that may result in loss of function and found that six of the 34 cultivars had a presumably functional Rf1 gene (Table 3) including three previously reported restorer varieties (‘F6‐3A‐5,’ ‘JN107,’ and ‘JN43’; Kiyosawa et al, 2020). The Rf2 gene contained an insertion and an SNP that may result in the loss of function of the PPR protein.…”
Section: Resultsmentioning
confidence: 99%
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“…The breeders need to know the genotype of the original parental forms of sorghum by the presence of the main genes that control fertility to speed up breeding work. One of these is the Rf1 gene [4].…”
Section: Introductionmentioning
confidence: 99%