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    An improved method for examining meiotic chromosomes in Musa L.

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    S02ArtAdelekeImprovedInthomNodev.pdf (74.35Kb)
    Date
    2002
    Author
    Adeleke, M.
    Pillay, M.
    Okoli, B.E.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Meiotic studies in Musa L. have been hampered by: 1) time-consuming efforts required to find the correct stages of cell division; 2) rigidity of the microsporocyte cell wall that makes preparation of smears difficult; and 3) poor staining of prophase chromosomes. This study describes an improved technique to examine meiosis in Musa. The procedure involves dissection of microsporocytes from the anthers, centrifugation to obtain large number of microsporocytes, enzymatic digestion of cell walls and treatment of cells with acetic-alcohol that results in spontaneous bursting of the protoplasts and release of chromosomes. Previous meiotic studies in Musa used acetocarmine that stained only highly condensed metaphase and anaphase chromosomes easily but not the relaxed prophase stages. In this study, we found that silver nitrate, Giemsa and Leishmans’ stain were also effective for staining Musa chromosomes. Silver staining was most effective for the less contracted prophase chromosomes. By providing an improved procedure to examine all the meiotic stages in Musa, this technique will be useful to develop pachytenekaryotypes, characterize new hybrids and identify nuclear restitution mechanisms that are important in breeding schemes.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/3778
    IITA Subjects
    Banana; Genetic Improvement; Plantain; Plant Ecology; Plant Health; Plant Diseases
    Agrovoc Terms
    Bananas; Plantains; Meiosis; Cytogenetics; Improved Technique
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
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