Karyological Observations in Musa beccarii var. hottana (Musaceae)

• 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:Department of Cell Biology and Genetics, Palacky University

抄録

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.

収録刊行物

• Acta Phytotaxonomica et Geobotanica

  Acta Phytotaxonomica et Geobotanica 58 (2_3), 112-118, 2007

  日本植物分類学会

キーワード

• Callimusa
• Chromosome number
• Flow cytometry
• Genome size
• Musa
• Musa beccarii var. hottana
• Nuclear DNA content
• Wild banana

詳細情報

• CRID: 1390001205269033344
• NII論文ID: 110006533812
• NII書誌ID: AA11586265
• DOI: 10.18942/apg.kj00004808386
• ISSN: 21897042
• ISSN: 13467565
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可