Evaluation of Salt Tolerance Mechanisms in Common Bean (Phaseolus vulgaris L.) Genotypes Exposed to Sodium Chloride and Sodium Sulfate: Morphological and Biochemical Perspectives

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ÇENGEL Ş. T., Alaca B., İslam S., YILDIRIM G. H., Özata E.

Legume Research, cilt.49, sa.4, ss.584-592, 2026 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 49 Sayı: 4
  • Basım Tarihi: 2026
  • Doi Numarası: 10.18805/lrf-933
  • Dergi Adı: Legume Research
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.584-592
  • Anahtar Kelimeler: Na2 SO4, NaCl, Osmotic adjustment, Phaseolus vulgaris, Photosynthetic pigments, Salinity, SPAD
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Recep Tayyip Erdoğan Üniversitesi Adresli: Evet

Özet

Background: Common bean is a nutritionally important crop, but increasing soil salinity threatens seedling establishment and productivity. Methods: This greenhouse pot study compared early-stage morphological and biochemical responses of two common bean genotypes (G3 and G13) exposed to two salt types (NaCl and Na2 SO4) at two concentrations (20 and 40 mM), alongside a non-saline control. Plant height, biomass traits, leaf area, SPAD chlorophyll index, photosynthetic pigments (chlorophyll a, chlorophyll b, total chlorophyll, carotenoids), chlorophyll a/b ratio and proline were assessed. Result: Salt treatments influenced SPAD and pigment-related traits, whereas effects on growth traits and proline were smaller or less consistent under the tested conditions. Genotype-dependent differences were observed across multiple traits. Overall, pigment traits may be useful for early-stage screening of salt responses under controlled conditions; however, conclusions should be interpreted cautiously given the limited genotype set.