Karyological Observations in Musa beccarii var. hottana (Musaceae)

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概要

• 論文の詳細を見る

• The center of diversity of the genus Musa (Musaceae) is in Southeast Asia, a region not studied in detail and where new species and varieties continue to be reported. Recently, a new variety, Musa beccarii var. hottana was described. To improve its characterization, the chromosome number and genome size of varieties hottana and beccarii were analyzed. Variety hottana had a diploid number of 2n=18, the same as var. beccarii. This is an interesting finding, as other species of Musa section Callimusa, in which M. beccarii has traditionally been included, have 2n=20. Nuclear DNA amounts (2C) of var. beccarii and var. hottana were estimated to be 1.562pg and 1.645pg, respectively. These are the largest genome sizes reported so far in Musa. The difference in genome size between the two varieties (〜5%) is highly significant and diagnostic, implying that DNA flow cytometry may be used to discriminate between them and to identify the endangered var. hottana. The analysis of the genome structure of M. beccarii may contribute to an understanding of the processes at the DNA and chromosomal levels that accompanied the evolution in the genus Musa.

• 2007-11-30

著者

• HAKKINEN MARKKU

  Botanic Garden, University of Helsinki

• SUCHUANKOVA PAVLA

  Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany

• DOLEZELOVA MARIE

  Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany

• HRIBOVA EVA

  Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany

• DOLEZEL JAROSLAV

  Laboratory of Molecular Cytogenetics and Cytometry, Institute of Experimental Botany

• Dolezel Jaroslav

  Laboratory Of Molecular Cytogenetics And Cytometry Institute Of Experimental Botany:department Of Ce

• Hribova Eva

  Laboratory Of Molecular Cytogenetics And Cytometry Institute Of Experimental Botany

• Hakkinen Markku

  Botanic Garden University Of Helsinki

• Dolezelova Marie

  Laboratory Of Molecular Cytogenetics And Cytometry Institute Of Experimental Botany

• Suchuankova Pavla

  Laboratory Of Molecular Cytogenetics And Cytometry Institute Of Experimental Botany

関連論文

• Karyological Observations in Musa beccarii var. hottana (Musaceae)
• Musa barioensis, a New Musa Species (Musaceae) from Northern Borneo
• Musa beccarii (Musaceae) Varieties in Sabah, Northern Borneo
• Musa kamengensis (Musaceae), a New Species from Arunachal Pradesh, India

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