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    Hybrid performance and inbredhybrid relationship of early maturing tropical maize under drought and wellwatered conditions

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    S13ArtOyekunleHybridInthomNodev.pdf (100.1Kb)
    Date
    2013-10
    Author
    Oyekunle, M.
    Badu-Apraku, B.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Drought tolerant maize (Zea mays L.) hybrids are crucial to sustainability of maize production in West and Central Africa (WCA). Two studies were conducted at three locations in Nigeria for 2 yr to (i) assess performance of 156 early-maturing maize inbreds and three hybrid types and (ii) determine heterosis among the lines and relationship between lines per se and hybrid performance. The inbreds and their hybrids were evaluated separately under drought and well-watered conditions. Genotype, environment and genotype × environment interactions were significant for grain yield under the research conditions. Grain yield of inbreds ranged from 0.06 t ha–1 for TZEI 123 to 1.92 t ha–1 for TZEI 17 under drought. While differences in grain yield among hybrid types (single, three-way and double-cross hybrids) were not significant under drought, significant differences were detected among hybrid types under optimal conditions. GGE biplot analysis identified three inbreds, TZEI 18, TZEI 56, and TZEI 1 and hybrids TZEI 129 × TZEI 16, (TZEI 17 × TZEI 16) × TZEI 157 and (TZEI 16 × TZEI 157) × TZEI 129 as ideal across research conditions. Midparent heterosis (MPH) and high-parent heterosis (HPH) for grain yield were higher in the well-watered conditions than under drought. Positive and significant correlations existed between MPH, HPH and yield under both research conditions. Drought tolerant hybrids with stable and high yield are available for promotion for adoption by farmers in WCA.
    https://dx.doi.org/10.1556/CRC.2013.0052
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/1265
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1556/CRC.2013.0052
    IITA Subjects
    Maize
    Agrovoc Terms
    Maize
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Cereal Research Communications
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    • Journal and Journal Articles4835
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