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    Spontaneous somatic tetraploids in cassava

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    Date
    1992
    Author
    Hahn, S.K.
    Bai, V.K.
    Asiedu, Robert
    Type
    Journal Article
    Metadata
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    Abstract/Description
    One suspected mutant with the broad, thick and dark green leaves characteristic of tetraploid cassava was found from each of the cassava clones TMS 91934 and TMS 89/00037-17 planted out in the field. Cytological examination confirmed them as tetraploids with chromosomes number 2n=4x=72. The mutants seen to be derived from natural solid mutation of axillary or adventitious buds through somatic chromosomes doubling of the initial cells of the buds as a result of abnormal mitotic division. Somatic doubling seems to take place rather frequently in cassava compared to the other plant species. The tetraploid mutants inferior in vigour to their diploid mother clones but would be valuable as parents for improvement of cassava at tetraploid level as a complement to sexual polyploidization.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/5323
    IITA Subjects
    Cassava
    Agrovoc Terms
    Cassava; Polyploidy; Chromosomes
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
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