Oryza属の細胞遺伝学的研究. XIV. 四倍性Oryza種と二倍性Leersia種との属間雑種 Cytogenetical studies on the genus Oryza. XIV. Intergeneric hybridizations between tetraploid Oryza species and diploid Leersia species

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Intergeneric hybrids involving <i>Oryza punctata</i> (2n=48, BBCC) with <i>Leersia tisseranti</i> (2n=24), <i>O. punctata</i> with <i>L. perrieri</i> (2n=24), <i>O. latifolia</i> (2n=48, CCDD) with <i>L. tisseranti</i> and <i>O. latifolia</i> with <i>L. perrieri</i> were produced at frequencies varying from 0.11% to 0.23% of the pollinated spikelets. Plant morphologies of the hybrids strongly resembled the tetraploid <i>Oryza</i> species. Five hybrids obtained from the four cross-combinations had the expected chromosome number of 2n=36 (trihaploid) in the somatic cells. The average meiotic chromosome pairings per cell were 0.23<sub>II</sub> +35.58<sub>I</sub> + 0.14<sub>1/2I</sub> (dividing univalent) for <i>O. punctata</i> × <i>L. tisseranti</i>; 0.11 <sub>II</sub>+35.51<sub>I</sub>+0.22<sub>1/2I</sub> for <i>O. punctata</i> × <i>L. perrieri</i>; 0.17<sub>II</sub>+35.63<sub>I</sub>+0.11 <sub>1/2I</sub> for <i>O. latifolia</i> × <i>L. tisseranti</i>; and 0.25<sub>II</sub>+35.49<sub>I</sub>+0.15<sub>1/2I</sub> for <i>O. latifolia</i> × <i>L. perrieri</i>. From these results, it seems that most of the bivalents observed at MI with a low frequency had originated from the auto-syndetic association of the chromosomes of <i>O. punctata </i>or <i>O. latifolia</i>. The results described above suggest that there is no genomic relationship between the parental species in each cross combination.<br>

収録刊行物

  • The Japanese journal of genetics  

    The Japanese journal of genetics 70(1), 47-55, 1995-02-25 

    Genetics Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002506853
  • NII書誌ID(NCID)
    AA00690924
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    0021504X
  • NDL 記事登録ID
    3602613
  • NDL 刊行物分類
    RA27;RB43
  • NDL 雑誌分類
    ZR1(科学技術--生物学)
  • NDL 請求記号
    Z18-23
  • データ提供元
    CJP書誌  NDL  IR  J-STAGE 
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