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    AMMI analysis of rainfed lowland rice (Oryza sativa) trials in Nigeria

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    S98ArtAbamuAmmiInthomNodev.pdf (189.1Kb)
    Date
    1998
    Author
    Abamu, F.J.
    Alluri, K.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    The additive main effects and multiplicative interaction (AMMI) model is used to analyse the grain yield data of 13 rice genotypes grown in 12 rainfed lowland rice environments. The trials were organized by the International Network for Genetic Evaluation of Rice in Africa (INGER‐Africa) and conducted in Nigeria. Main effects due to environments (E), genotypes (G) and G × E interaction were found to be significant (P = 0.001). Cross validation analysis suggested that an AMMI model with one interaction principal component axis (IPCA) was most useful predictively, whereas Gollobs' test declared two components, IPCA1 and IPCA2, statistically significant (P = 0.01). The IPCAl, however, accounted for most (47.8%) of the G × E sum of squares. Correlation and regression analysis, and relative scatter of genotype and environment points on the AMMI biplot suggest that the interaction partitioned in IPCA1 resulted from differences in the days to flowering among the genotypes. The paper discusses these in relation to the occurrence of Fe toxicity at the test sites and varietal tolerance to the stress.
    https://doi.org/10.1111/j.1439-0523.1998.tb01961.x
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4007
    Digital Object Identifier (DOI)
    https://doi.org/10.1111/j.1439-0523.1998.tb01961.x
    IITA Subjects
    Genetic Improvement; Plant Health; Grain Legumes
    Agrovoc Terms
    Oryza Sativa; G × E Interaction; Varietal Testing
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
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