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    Generation mean analysis of phosphorus-use efficiency in freely nodulating soybean crosses grown in low-phosphorus soil

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    U17ArtUzokweGenerationInthomDev.pdf (373.3Kb)
    Date
    2017
    Author
    Uzokwe, Veronica N.E.
    Asafo-Adjei, B.
    Fawole, B.
    Abaidoo, R.C.
    Odeh, I.
    Ojo, D.K.
    Dashiell, Kenton E.
    Sanginga, Nteranya
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Freely nodulating soybean genotypes vary in their phosphorus (P) uptake and P-use efficiency (PUE) in low-P soils. Understanding the genetic basis of these genotypes’ performance is essential for effective breeding. To study the inheritance of PUE, we conducted crosses using two high-PUE genotypes, two moderate-PUE genotypes and two inefficient-PUE genotypes, and obtained F1, F2, BC1 and BC2 populations. The inheritance of PUE was evaluated using a randomized complete block design. A generation mean analysis of phenotypic data showed that PUE was heritable, with complex inheritance patterns and the presence of additive, dominance and epistatic gene effects. Seed P, shoot P, root P, P-incorporation efficiency and PUE were largely quantitatively inherited traits. There were dominance, additive × additive and dominance × dominance gene effects on PUE, grain yield, shoot dry weight, 100-seed weight, root dry weight and shoot dry matter per unit P for populations grown under low-P conditions. Dominance effects were generally greater than additive effects on PUE-related indices. These PUE indices can be used to select P-efficient soybean genotypes from segregating populations.
    https://dx.doi.org/10.1111/pbr.12453
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/1598
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1111/pbr.12453
    Research Themes
    BIOTECH & PLANT BREEDING
    IITA Subjects
    Genetic Improvement; Grain Legumes; Plant Breeding; Plant Genetic Resources; Soybean
    Agrovoc Terms
    Soybeans; Genotypes; Freely Nodulating Soybean; Gene Effects; Generation Mean Analysis; Phosphorus-Use Efficiency
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Plant Breeding
    Collections
    • Journal and Journal Articles4835
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