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Evaluation of Spring Wheat (20 Varieties) Adaptation to Soil Drought during Seedlings Growth Stage

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  • Jolanta Biesaga-Kościelniak

    ()
    (The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Krakow, Poland)

  • Agnieszka Ostrowska

    ()
    (The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Krakow, Poland)

  • Maria Filek

    ()
    (The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Krakow, Poland)

  • Michał Dziurka

    ()
    (The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Krakow, Poland)

  • Piotr Waligórski

    ()
    (The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Krakow, Poland)

  • Magdalena Mirek

    ()
    (The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek 21, 30-239 Krakow, Poland)

  • Janusz Kościelniak

    ()
    (Department of Plant Physiology, Agricultural University, Podluzna 3, 30-239 Krakow, Poland)

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    Abstract

    The effect of soil drought (10 days) on the growth of plants, the accumulation of water and leakage of electrolytes, gas exchange, the contents of chl a + b and carotenoids in leaves and photochemical activity of photosystem II was studied at the seedling stage by transient fluorescent analysis in 20 of the popular varieties of polish spring wheat. Drought caused a particularly strong reduction in vigor of growth of seedlings, net photosynthesis rate and triggered an increase in electrolyte leakage from the leaves. Certain varieties during the drought demonstrated relatively intense CO 2 assimilation at low water loss through transpiration. The varieties tested were significantly different in terms of tolerance to drought of the processes of gas exchange and seedlings development. Photochemical processes in PSII showed high tolerance to drought and at the same time low differentiation among varieties. The results obtained suggested that tolerance of growth parameters to drought and CO 2 assimilation at the seedling stage may alleviate consequent depression of final yield of the grain.

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    Bibliographic Info

    Article provided by MDPI, Open Access Journal in its journal Agriculture.

    Volume (Year): 4 (2014)
    Issue (Month): 2 (April)
    Pages: 96-112

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    Handle: RePEc:gam:jagris:v:4:y:2014:i:2:p:96-112:d:34800

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    Related research

    Keywords: varieties; drought stress; stress index; wheat; photochemical activity; yield; assimilation CO 2; gas exchange; water management;

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