Journal
BREEDING SCIENCE
Volume 63, Issue 2, Pages 218-226Publisher
JAPANESE SOC BREEDING
DOI: 10.1270/jsbbs.63.218
Keywords
radish; STS; linkage map; chromosome assignment; QTL
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Funding
- Grants-in-Aid for Scientific Research [23510236] Funding Source: KAKEN
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The radish displays great morphological variation but the genetic factors underlying this variability are mostly unknown. To identify quantitative trait loci (QTLs) controlling radish morphological traits, we cultivated 94 F-4 and F-5 recombinant inbred lines derived from a cross between the rat-tail radish and the Japanese radish cultivar 'Harufuku' inbred lines. Eight morphological traits (ovule and seed numbers per silique, plant shape, pubescence and root formation) were measured for investigation. We constructed a map composed of 322 markers with a total length of 673.6 cM. The linkage groups were assigned to the radish chromosomes using disomic rape-radish chromosome-addition lines. On the map, eight and 10 QTLs were identified in 2008 and 2009, respectively. The chromosome-linkage group correspondence, the sequence-specific markers and the QTLs detected here will provide useful information for further genetic studies and for selection during radish breeding programs.
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