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    Effect of day length on the development of tubers in yams (Dioscorea spp.)

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    Journal Article (2.246Mb)
    Date
    2002
    Author
    Shiwachi, H.
    Ayankanmi, T.G.
    Asiedu, Robert
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Sixty-day-old plants of white Guinea yam (Dioscorea rotundata), water yam (D. alata) and yellow Guinea yam (D. cayenensis) were exposed to 10 h day lengths (short days) for 15 and 30 days. Short-day treatment applied at the early growth stage of yams promoted the enlargment of tubers, but the responses varied among species and cultivars. The photoperiodic sensitivities of D. rotundata and D. alata were lower than for D. cayenensis. Early-maturing cultivars were lower in photoperiodic sensitivity than the late ones. Short day length is a major factor in the enlargement and maturation of yam tubers. It appears that day length treatments could be used to distinguish between early-and late-maturing cultivars of yams.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4597
    Non-IITA Authors ORCID
    Robert Asieduhttps://orcid.org/0000-0001-8943-2376
    IITA Subjects
    Plant Breeding; Plant Production; Yam
    Agrovoc Terms
    Dioscorea Rotundata; Dioscorea Alata; Dioscorea Cayenensis; Photoperiodicity; Tubers; Yams
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Tropical Science
    Collections
    • Journal and Journal Articles4835
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