Growth and Photosynthetic Response of Two Persimmon Rootstocks (<i>Diospyros kaki</i> and <i>D. virginiana</i>) under Different Salinity Levels

  • Meral INCESU Cukurova University, Faculty of Agriculture, Department of Horticulture, 01330, Adana
  • Berken CIMEN Cukurova University, Faculty of Agriculture, Department of Horticulture, 01330, Adana
  • Turgut YESILOGLU Cukurova University, Faculty of Agriculture, Department of Horticulture, 01330, Adana
  • Bilge YILMAZ Cukurova University, Faculty of Agriculture, Department of Horticulture, 01330, Adana

Abstract

Salinity continues to be a major factor in reduced crop productivity and profit in many arid and semiarid regions. Seedlings of Diospyros kaki Thunb. and D. virginiana L. are commonly used as rootstock in persimmon cultivation. In this study we have evaluated the effects of different salinity levels on photosynthetic capacity and plant development of D. kaki and D. virginiana. Salinity was provided by adding 50 mM, 75 mM and 100 mM NaCl to nutrient solution. In order to determine the effects of different salinity levels on plant growth, leaf number, plant height, shoot and root dry mass were recorded. Besides leaf Na, Cl, K and Ca concentrations were determined. Also leaf chlorophyll concentration, chlorophyll fluorescence (Fv’/Fm’) and leaf gas exchange parameters including leaf net photosynthetic rate (PN), stomatal conductance (gS), leaf transpiration rate (E), and CO2 substomatal concentration (Ci) were investigated. Significant decrease of leaf number, shoot length and plant dry mass by increasing salinity levels was observed in both rootstocks. D. virginiana was less affected in terms of plant growth under salinity stress. Leaf chlorophyll concentration reduction was higher in the leaves of D. kaki in comparison to D. virginiana in 100 mM NaCl treatment. By increasing salinity levels PN, gS and E markedly decreased in both rootstocks and D. kaki was more affected from salinity in terms of leaf gas exchange parameters. In addition there was no significant difference but slight decreases were recorded in leaf chlorophyll fluorescences of both rootstocks.

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Author Biographies

Meral INCESU, Cukurova University, Faculty of Agriculture, Department of Horticulture, 01330, Adana
Department of Horticulture
Berken CIMEN, Cukurova University, Faculty of Agriculture, Department of Horticulture, 01330, Adana
Department of Horticulture
Turgut YESILOGLU, Cukurova University, Faculty of Agriculture, Department of Horticulture, 01330, Adana
Department of Horticulture
Bilge YILMAZ, Cukurova University, Faculty of Agriculture, Department of Horticulture, 01330, Adana
Department of Horticulture
Published
2014-12-02
How to Cite
INCESU, M., CIMEN, B., YESILOGLU, T., & YILMAZ, B. (2014). Growth and Photosynthetic Response of Two Persimmon Rootstocks (<i>Diospyros kaki</i> and <i>D. virginiana</i&gt;) under Different Salinity Levels. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 42(2), 386-391. https://doi.org/10.15835/nbha4229471
Section
Research Articles