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Comparative Effects of Indole Acetic Acid on Photosynthetic Pigments and Mineral Contents of Two Genotypes of Okra Under Salinity Stress

Author

Listed:
  • A. M. Esan

    (University of Ibadan, Nigeria)

  • C. O. Olaiya

    (University of Ibadan, Nigeria)

  • T. O. Omolekan

    (University Iwo, Nigeria)

  • K. A. Aremu

    (Kwara State College of Education, Nigeria)

  • H. R. Y. Adeyemi

    (Federal University of Minna, Nigeria)

Abstract

Salinity stress causes a major threat to crops productivity across the globe. The effects of salt stress on photosynthetic pigments and minerals content were studied in this research work. The seeds of the two genotypes of okra (47-4 and LD 88) were pre-soaked in the solutions of IAA (0.4, 0.5, and 0.6 mM concentrations) and the seeds were sown in 10 kg of soil in polyethene bags already contained 0, 100, and 200 mM NaCl respectively. Salinity stress significantly reduced photosynthetic pigments and minerals content of the two genotypes of okra. Treatment of okra seeds with IAA at varying concentrations improved salt tolerance of the two genotypes, which is evident with increase photosynthetic pigments and minerals concentrations under salinity stress relatives to the negative control groups. Finally, we can infer from the results of this study that pre-soaked seeds with 0.4 mM IAA significantly ameliorated the effects of salinity on the two genotypes of okra, and this concentration could serve as a promising phytohormone for okra plant under moderate and severe salt levels.

Suggested Citation

  • A. M. Esan & C. O. Olaiya & T. O. Omolekan & K. A. Aremu & H. R. Y. Adeyemi, 2020. "Comparative Effects of Indole Acetic Acid on Photosynthetic Pigments and Mineral Contents of Two Genotypes of Okra Under Salinity Stress," European Journal of Agriculture and Food Sciences, European Open Science, vol. 2(6), November.
    • Handle: RePEc:epw:ejfood:v:2:y:2020:i:6:id:20136
    DOI: 10.24018/ejfood.2020.2.6.136
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