The influence of water deficit on vegetative growth, physiology, fruit yield and quality in eggplants

Halil Kirnak, Cengiz Kaya, I. Tas, D. Higgs

    Research output: Contribution to journalArticlepeer-review


    The effects of water deficit on plant growth, physiology and dry
    matter accumulation in the eggplant (Solanum melongena L. cv., Teorem F1)
    grown in pot were studied under out door conditions. Water stress was imposed by irrigating the plants with 80%, 60% and 40% of water needed to
    reach pot capacity (PC) in the soil. Control plants were irrigated 100% of
    PC. Water deficits increased leaf temperature up to 3-4 oC compared to the
    control. The water stress resulted in significant decreases in chlorophyll content, electrolyte leakage (EL), leaf relative water content (LRWC) and vegetative growth. Severe water stress (40% of PC) reduced plant height by 46%,
    stem diameter by 51%, total dry weight by 43% and relative leaf expansion
    rate (RLER) by up to 75%. The root to shoot ratio was 2.1 times higher in waterstressed plants, showing that water stress in eggplants alters the pattern of dry
    matter distribution favoring the roots. Plants grown under high water stress
    had less fruit yield and quality than those in the control treatment. Water
    deficit also inhibited the uptake of nitrogen, phosphorus and potassium within
    the plant. The decrease in fruit yield, quality and plant growth induced by water
    deficit was a consequence of a reduction in both RLER and transpiration
    Original languageEnglish
    Pages (from-to)34-46
    Number of pages13
    JournalBulgarian Journal of Plant Physiology
    Issue number3-4
    Publication statusPublished - 2001


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