A High-Density Rice Genetic Linkage Map with 2275 Markers Using a Single F2 Population

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ID: 304689
1998
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Abstract
Abstract A 2275-marker genetic map of rice (Oryza sativa L.) covering 1521.6 cM in the Kosambi function has been constructed using 186 F2 plants from a single cross between the japonica variety Nipponbare and the indica variety Kasalath. The map provides the most detailed and informative genetic map of any plant. Centromere locations on 12 linkage groups were determined by dosage analysis of secondary and telotrisomics using >130 DNA markers located on respective chromosome arms. A limited influence on meiotic recombination inhibition by the centromere in the genetic map was discussed. The main sources of the markers in this map were expressed sequence tag (EST) clones from Nipponbare callus, root, and shoot libraries. We mapped 1455 loci using ESTs; 615 of these loci showed significant similarities to known genes, including single-copy genes, family genes, and isozyme genes. The high-resolution genetic map permitted us to characterize meiotic recombinations in the whole genome. Positive interference of meiotic recombination was detected both by the distribution of recombination number per each chromosome and by the distribution of double crossover interval lengths.
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Authors Yoshiaki Harushima, Masahiro Yano, Ayahiko Shomura, Mikiko Sato, Tomotoshi Shimano, Y Kuboki, Toshio Yamamoto, S. Y. Lin, Baltazar A. Antonio, Arnold Parco, Hiromi Kajiya‐Kanegae, Ning Huang, Kimiko Yamamoto, Yoshiaki Nagamura, Nori Kurata, G. S. Khush, Takuji Sasaki
Journal current genetics
Year 1998
DOI
10.1093/genetics/148.1.479
URL
https://doi.org/10.1093/genetics/148.1.479
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