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Molecular mapping of a quantitative trait locus qSTV 11 Z harbouring rice stripe virus resistance gene, Stv‐b
Author(s) -
Lee SaisBeul,
Hur YeonJae,
Lee JongHee,
Kwon Tackmin,
Shin Dongjin,
Kim TaeHeon,
Han SangIk,
Cho JunHyeon,
Yoon YoungNam,
Kiswara Gilang,
Song YouChun,
Yeo UnSang,
Kwon YoungUp,
Kim KyungMin,
Park DongSoo
Publication year - 2017
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12419
Subject(s) - quantitative trait locus , biology , indel , genetics , locus (genetics) , population , gene , chromosome , gene mapping , candidate gene , single nucleotide polymorphism , genotype , demography , sociology
Rice stripe virus ( RSV ) predominantly affects rice. In this study, we attempted to localize the quantitative trait locus ( QTL ) conferring RSV resistance in the ‘Zenith’ variety, which is known to harbour Stv‐a and Stv‐b . The resistant variety Zenith was crossed with the susceptible variety ‘Ilpum’ to generate a mapping population comprising 180 F 2:3 lines for QTL analysis. Contrary to previous findings, we could not detect Stv‐a ‐specific QTL s on chromosome 6. Stv‐b ‐specific QTL was detected on the long arm of chromosome 11; it was designated qSTV 11 z . Six F 4:5 lines were selected from the F 3:4 population and fine‐mapped using insertion/deletion (InDel) markers. qSTV 11 z was mapped to a 520‐kb region between the InDel markers Sid2 and Indel8. This region included Os SOT 1 (candidate gene for STV 11 ) and other previously reported RSV resistance QTL s. The Os SOT 1 sequence in Ilpum and Zenith was identical to that of the susceptible variety ‘Koshihikari’, indicating that Os SOT 1 is not the candidate gene of qSTV 11 z . The localization of qSTV 11 z should provide useful information for marker‐assisted selection and determination of genetic resources in rice breeding.