Genetic variation and interspecific hybridization among natural populations of zoysiagrasses detected by RFLP analyses of chloroplast and nuclear DNA

この論文にアクセスする

この論文をさがす

著者

抄録

Genetic variations among 17 accessions of zoysiagrasses collected from natural populations in Japan were investigated by RFLP analyses of chloroplast DNA (cpDNA) and nuclear DNA. These accessions were classified into five species based on morphological characteristics: <i>Zoysia japonica, Z. matrella, Z. tenuifolia, Z. sinica,</i> and <i>Z. macrostachya.</i> On the basis of eight kinds of RFLPs in cpDNAs detected across accessions, six chloroplast genome types (types A-F) were identified. Although type-A cpDNA was shared by five accessions of <i>japonica</i> and four accessions of <i>matrella</i>, derivative cpDNAs of type A, which each arose by a mutation, were identified in one accession of <i>japonica</i> (type B) and in two accessions of <i>matrella</i> (type C). One accession of <i>japonica</i> which showed spikelets similar to those of shapes <i>macrostachya</i>, contained type-F cpDNA as did <i>sinica</i> and <i>macrostachya</i>. The two accessions of <i>tenuifolia</i> each showed a specific cpDNA type, i.e. types D and E.<br> Genetic relationships among the 17 accessions were investigated by the RFLP analyses of nuclear DNA with 20 genomic and gene probes. A dendrogram constructed with genetic distances calculated from the RFLP patterns indicated four major groups among them. Six accessions of <i>japonica</i> comprised one group, whereas the one accession of <i>japonica</i> possessing the type-F cpDNA was clustered with <i>macrostachya</i> and <i>sinica</i>. Four accessions of <i>matrella</i> with type A cpDNA constituted another group in the dendrogram, showing a closer relationship to the <i>japonica</i> accessions than to the other two accessions of <i>matrella</i>. The remaining two accessions of <i>matrella</i> and <i>tenuifolia</i> accessions were grouped together. These data indicate that zoysiagrasses distributed in Japan harbor highly genetic variations, and that interspecific hybridization has occurred in natural populations.<br>

収録刊行物

  • Genes & genetic systems

    Genes & genetic systems 72(4), 173-179, 1997-08

    The Genetics Society of Japan

参考文献:  25件中 1-25件 を表示

被引用文献:  8件中 1-8件 を表示

各種コード

  • NII論文ID(NAID)
    10003761135
  • NII書誌ID(NCID)
    AA11077421
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13417568
  • NDL 記事登録ID
    4326600
  • NDL 雑誌分類
    ZR1(科学技術--生物学)
  • NDL 請求記号
    Z53-W539
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
ページトップへ