Calcium supplementation ameliorates salinity stress in Lactuca sativa plants

Abdul J. Cheruth, Khadija I.M. Ramadhan, Shyam S. Kurup

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Salinity represents an increasing threat to agricultural production in every region of the world. The objective of this investigation was to determine ameliorative effects of calcium chloride (CaCl2) on salt stressed lettuce (Lactuca sativa) in terms of growth, pigments and biochemical contents. The treatments were divided into 4 sections: control, 80mM NaCl, 80mM NaCl +5mM CaCl2 and 5mM CaCl2 alone. NaCl and CaCl2 stress decreased lettuce plant root and stem length, number of leaves and fresh weight versus the control. NaCl combined with CaCl2 increased these parameters versus treatments with NaCl or CaCl2 alone. Salt stress reduced the shoot and root fresh weight. The roots showed slightly increased growth under salinity, but after the treatment with CaCl2 the plants were normal. The pigment chlorophyll showed a diminishing trend in NaCl stressed plants, but it increased with CaCl2 application. The chlorophyll content increased in all plants with age. There was a slight decrease in carotenoid and anthocyanin contents with NaCl treated plants. CaCl2 also showed decrease in carotenoid and anthocyanin contents, but it was still higher than that of NaCl treated plants. Proline and phenol contents increased in lettuce plants under treatment with NaCl and CaCl2 when compared to the control. From these results, it can be concluded that the addition of CaCl2 to NaCl-stressed lettuce plants have a significant role in partial alleviation of salinity stress. Our results indicated that the cultivation of vegetable plants like lettuce in saline areas would be possible with supplemental calcium application.

Original languageEnglish
Pages (from-to)138-140
Number of pages3
JournalJournal of Applied Horticulture
Volume18
Issue number2
Publication statusPublished - May 1 2016

Keywords

  • Lettuce (Lactuca sativa)
  • Morphology
  • Physiology
  • Pigments
  • Salinity

ASJC Scopus subject areas

  • Biotechnology
  • Plant Science
  • Horticulture

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