Occurrence of Spontaneous Triploidy in Manihot esculenta Crantz

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The spontaneous occurrence of a triploid is reported in <I>Manihot esculenta</I> Crantz collected in Sapé-PB, Brazil. Mitotic analysis showed a stable chromosome number of 2n=54, with chromosome size and morphology very similar to the diploid species. The chromosome behavior in meiosis was irregular in the metaphase-anaphase I, with occurrence of uni, bi and trivalents. The average number of univalents per cell was 7.2. In the tetrad stage, a higher number of micronuclei were found, resulting in almost 100% of abnormal tetrads and pollen sterility. Triploid was also characterized by having larger and fewer stomata than diploid species.

収録刊行物

  • Cytologia : international journal of cytology  

    Cytologia : international journal of cytology 64(2), 137-140, 1999-06 

    Japan Mendel Society, International Society of Cytology

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各種コード

  • NII論文ID(NAID)
    10002795482
  • NII書誌ID(NCID)
    AA00622764
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00114545
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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