Map Based Estimation of the Origin of Japanese Flowering Cherry Cultivar, <i>Cerasuse</i> ｘ <i>yedoensis</i> ‘Somei-yoshino’ Fujino with an Assignment for Each Chromosome

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  • Tsuruta Momi
    Faculty of Applied Biological Sciences, Gifu University
  • Wang Cheng
    The United Graduate School of Agricultural Science, Gifu University
  • Kato Shuri
    Tama Forest Science Garden, Forestry and Forest Products Research Institute
  • Mukai Yuzuru
    Faculty of Applied Biological Sciences, Gifu University

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  • 連鎖地図を利用した染色体ごとの解析による ‘染井吉野’ の起源推定の試み
  • レンサ チズ オ リヨウ シタ センショクタイ ゴト ノ カイセキ ニ ヨル'ソメイヨシノ'ノ キゲン スイテイ ノ ココロミ

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<p>Cerasus ｘ yedoensis ‘Somei-yoshino’ Fujino, one of the most popular flowering cherry cultivars in Japan, is considered a hybrid of Cerasus spachiana and Cerasus speciosa. In the present study, 27 microsatellite marker loci on the genetic linkage map of ‘Somei-yoshino’ were genotyped in the wild populations of C. spachiana and C. speciosa. Based on the allele frequencies in the wild population, two alleles of ‘Somei-yoshino’ were assigned to each of them. Of the 54 alleles analyzed, 44.4 and 33.3％ were assigned to C. spachiana and C. speciosa, respectively. The remaining 22.2％ were unidentified because of their equal frequencies or rare observations in both species. In addition, some chromosomes consisted of two regions derived from C. spachiana and C. speciosa, respectively. These results suggested that some ‘Somei-yoshino’ chromosomes were formed by the crossing-over of hybrid ancestors. Thus, we concluded that ‘Somei-yoshino’ may not have originated from a simple hybrid such as a first filial generation, but from a more complicated crossing between C. spachiana and C. speciosa.</p>

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