IDEAS home Printed from https://ideas.repec.org/a/ibn/jasjnl/v10y2018i2p318.html
   My bibliography  Save this article

Gas exchange, Chlorophyll Fluorescence and Pigments of Noni (Morinda citrifolia L.) under Salt Stress

Author

Listed:
  • A. M. W. Cova
  • André Azevedo Neto
  • Hans Gheyi
  • Rogério Ribas
  • Leandra de Oliveira
  • Renata Menezes

Abstract

Noni is a fruit crop well adapted to different soil and climatic conditions. Aiming to evaluate the physiological responses to salinity, noni seedlings were grown in two levels of NaCl (0 and 100 mM) in nutrient solution and the effects of salt stress on gas exchange, chlorophyll a fluorescence, photosynthetic pigments, relative water content and membrane integrity were assessed after 1, 10, 20, 30 and 40 days of salt stress. The experimental design was a completely randomized in 2 × 5 factorial arrangement with four replications. Salinity did not affect the intrinsic efficiency of water use, but reduced net assimilation of CO2, stomatal conductance, transpiration, carboxylation efficiency and contents of chlorophyll a, b, and total carotenoids. Salinity caused no major changes in chlorophyll fluorescence, however the stressed plants showed a decrease in photoprotection capacity by the cycle of xanthophylls. Salinity did not affect the water status of the leaves, but damages to the integrity of the membranes were observed due to duration of salt exposure. The data indicate that noni presents stomatal closure as a mechanism of salinity tolerance, reducing water loss by transpiration and maintaining the water status.

Suggested Citation

  • A. M. W. Cova & André Azevedo Neto & Hans Gheyi & Rogério Ribas & Leandra de Oliveira & Renata Menezes, 2018. "Gas exchange, Chlorophyll Fluorescence and Pigments of Noni (Morinda citrifolia L.) under Salt Stress," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 10(2), pages 318-318, January.
  • Handle: RePEc:ibn:jasjnl:v:10:y:2018:i:2:p:318
    as

    Download full text from publisher

    File URL: https://ccsenet.org/journal/index.php/jas/article/download/71913/40013
    Download Restriction: no

    File URL: https://ccsenet.org/journal/index.php/jas/article/view/71913
    Download Restriction: no
    ---><---

    More about this item

    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ibn:jasjnl:v:10:y:2018:i:2:p:318. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Canadian Center of Science and Education (email available below). General contact details of provider: https://edirc.repec.org/data/cepflch.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.