Effect of 24-epibrassinolide on salinity-induced changes in loquat (Eriobotrya japonica Lindl)

Authors

  • Fatemeh Sadeghi Shiraz University
  • Akhtar Shekafandeh Shiraz University

DOI:

https://doi.org/10.5073/JABFQ.2014.087.026

Keywords:

Salt stress, 24-epibrassinolide, Loquat, Growth, Mineral nutrients

Abstract

This study was carried out to investigate the role of 24-epibrassinolide (24-EBL) in inducing loquat plant salt tolerance. Plants were treated with five levels of salt, so that the electrical conductivity (EC) of 0.5 (control), 2, 4, 6 and 8 dS m-1 was established in pots. Then, the plants were sprayed with different concentrations of 24-EBL (0, 0.25, 0.5 and 0.75 mg l-1). Under salt stress, the plant growth parameters and chlorophyll content decreased, while the total soluble sugars and proline contents considerably increased. However, the application of 24-EBL significantly ameliorated the plant growth by reducing the adverse effects of salinity on the examined parameters. The ion concentrations showed an increase in accumulation of Na+ and Cl- coupled with a decrease in K+ with increasing salinity in medium. Exogenous application of 24-EBL had a significant effect on leaf Na+, K+, Cl- contents. Out of different 24-EBL concentrations, the effects of 0.5 mg l-1 proved the best under stress conditions.

 

Author Biographies

Fatemeh Sadeghi, Shiraz University

Department of Horticulture, Faculty of Agriculture

Akhtar Shekafandeh, Shiraz University

Department of Horticulture, Faculty of Agriculture

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Published

2014-07-08

Issue

Vol. 87 (2014): Journal of Applied Botany and Food Quality

Section

Article

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