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    Genotype X Environment interaction of mosaic disease, root yields and total carotene concentration of yellowfleshed cassava in Nigeria

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    S12ArtMaroyaGenotypeNothomDev.pdf (691.1Kb)
    Date
    2012
    Author
    Maroya, N.
    Kulakow, P.A.
    Dixon, A.
    Maziya-Dixon, B.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Twenty-one yellow-fleshed cassava genotypes were evaluated over two years in five major cassava growing agroecological zones in Nigeria. The trials were established in a randomized complete block design with four replications to assess genotype performance and Genotype × Environment interaction for cassava mosaic disease (CMD), fresh and dry root yield (FYLD; DYLD), root dry matter content (DMC), and total carotene concentration (TCC). Combined analysis of variance showed significant differences () among genotypes (G), environment (E), and Genotype × Environment interaction (GE) for all the traits tested. For reaction to CMD, the best genotypes showing stable resistance were TMS 07/0539 and TMS 07/0628. For root yield, the best genotypes were TMS 01/1368 and TMS 07/0553. Genotype TMS 07/0593 was the best for DMC and TCC across the 10 environments. Variation among genotypes accounted for most of the Total Sum of Squares for CMD (72.1%) and TCC (34.4%). Environmental variation accounted for most of the Total Sum of Squares for FYLD (42.8%), DYLD (39.6%), and DMC (29.2%). This study revealed that TMS 07/0593 has the highest and most stable TCC, DMC with the lowest CMD severity score and appeared to be the best genotype.
    https://dx.doi.org/10.1155/2012/434675
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/1572
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1155/2012/434675
    IITA Subjects
    Cassava; Genetic Improvement; Plant Genetic Resources; Plant Diseases
    Agrovoc Terms
    Genotype Environment Interaction; Mosaic Disease; Yellow-Fleshed Cassava; Root Yields; Environment
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    International Journal of Agronomy
    Collections
    • Journal and Journal Articles4835
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