Grain production and assimilate utilization of wheat in relation to cultivar characteristics, climatic factors and nitrogen supply

J.H.J. Spiertz

    Research output: Thesisinternal PhD, WU

    Abstract

    The effects on grain production of cultivar characteristics, nitrogen supply and some climatic factors were studied in field trials and under controlled environmental conditions. A rise in temperature considerably increased the rate of grain growth but shortened its duration, whilst the positive effect of light intensity on the grain yield was greater at high temperatures.<p/>Additional nitrogen raised post-floral photosynthesis. The nitrogen assimilation by the grains was increased by warmth, resulting in a higher nitrogen concentration of the grains and in earlier senescence of the leaves. Differences between a semi-dwarf cultivar and a standard were mainly expressed in the dry matter distribution before and after anthesis and so in a higher harvest-index.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    Supervisors/Advisors
    • Kupers, L.J.P., Promotor, External person
    • Vervelde, G.J., Co-promotor, External person
    Award date10 Nov 1978
    Place of PublicationWageningen
    Publisher
    Print ISBNs9789022006825
    Publication statusPublished - 1978

    Keywords

    • botany
    • triticum aestivum
    • wheat
    • hexaploidy
    • meteorology
    • varieties
    • cultivars
    • races
    • harvesting
    • cultural methods
    • agriculture

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