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    Morphological variation in Musa germplasm

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    U74ProcOkigboMultidisciplinaryNothomNodev.pdf (1.238Mb)
    Date
    1997
    Author
    Ortiz, R.
    Type
    Journal Article
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    Abstract/Description
    Musa cultivars (bananas and plantains) are important crops in the humid tropics of Africa, America and Asia. This paper reports the extent of morphological variation of the Musa germplasm maintained in the gene-bank of the International Institute of Tropical Agriculture in southeastern Nigeria. Qualitative and quantitative descriptors were used to evaluate AA, BB, AB, AAA, AAB, AAAA, AAAB and AABB bananas, AAA and ABB cooking bananas, AAA beer bananas and AAB plantains and a few wild species. Univariate and principal component (PCA) analyses were performed to identify the most important descriptors to characterize and classify Musa germplasm collections. The most important qualitative morphological descriptors were persistence of male bud and hermaphrodite flowers, pigmentation in pseudostem, foliage, petiole and male flower, pseudostem blotching and waxiness, and leaf orientation. Furthermore, the most important quantitative morphological descriptors included pseudostem girth, height of tallest sucker, number of fruits and fruit sizes. These quantitative descriptors have a high heritability (>0.8), high repeatibility (>2.0) and low coefficient of variation (9–15%) with the exception of the height of the tallest sucker. The implications of the germplasm grouping revealed by PCA are briefly discussed in relation to the evolution of the triploid cultivars. This paper also proposes a new scientific nomenclature for the triploid Musa cultivars.
    https://doi.org/10.1023/A:1008606411971
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4985
    Digital Object Identifier (DOI)
    https://doi.org/10.1023/A:1008606411971
    IITA Subjects
    Plantain; Banana; Plant Genetic Resources
    Agrovoc Terms
    Bananas; Heritability; Plantains; Germplasm
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4839
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