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    The performance profile of Dioscorea rotundata cultivar Dorban genotypes in Ghana using GGE biplot analysis

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    U09ArtOtooPerformanceInthomDev.pdf (140.6Kb)
    Date
    2009-01
    Author
    Otoo, E.
    Asiedu, Robert
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Twenty-two genotypes of D. rotundata cultivar Dorban consisting of 19 botanically developed seeds and 3 vegetative checks were evaluated in 15 environments from 2000 to 2004 using CRD to assess the effect of genotype and genotype x environment interaction on the tuber yield of 22 white yam (D. rotundata L. cv. Dorban) genotypes via GGE (genotype plus genotype x environment) biplot ethodology. The GGE biplot procedure was used to determine the yield potential and stability of the genotypes. Significant differences (p<0.001) were observed in all cultivars with respect to genotype, environment and genotype by environment interactions. Biplot analysis identified three mega-environments corresponding to the three agroecologies - Fumesua (Forest) was the most representative and discriminating environment followed by Bodwease (Coastal Savannah) and Wenchi (Forest-Savannah Transition). Genotypes Gdo02, Gdo03, Gdo20 and Gdo01 including the three checks were identified as superior. GenotypeGdo016 was the worst genotype.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/2516
    IITA Subjects
    Yam; Genetic Improvement; Research Method
    Agrovoc Terms
    D. Rotundata; Genotypes; Genotype X Environment Interaction
    Regions
    Africa; West Africa
    Countries
    Ghana
    Journals
    Journal of Food, Agriculture & Environment
    Collections
    • Journal and Journal Articles4839
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