Year 2019, Volume 65, Issue 4

Year : 2019
Volume : 65
Issue : 4
   
Authors : Abdenour KHELOUFI, Lahouaria Mounia MANSOURI
Title : ANATOMICAL CHANGES INDUCED BY SALINITY STRESS IN ROOT AND STEM OF TWO ACACIA SPECIES (A. KARROO AND A. SALIGNA)
Abstract : Soil salinity is one of the main abiotic constraints limiting plant growth. This paper focuses on the concept of internal adaptation in relation to salt tolerance during the vegetative phase. Under saline conditions, we evaluated some anatomical changes in stems (area, perimeter, cortex thickness, stele area, stele perimeter, pith area) and roots (thickness, cortex thickness and stele thickness) of two acacia species (A. karroo and A. saligna). Plants of 90 days old were cultured at various concentrations of NaCl (0, 200, 400 and 600 mM) for 21 days. The experiment was laid out in completely randomized design with four replications. For microscopic analysis, the stem tissues were cross-sectioned and the root were profile viewing. Results showed that salt caused remarkable changes in some anatomical-related parameters. Microscopic studies showed that every acacia species had made its own anatomical changes in stem and root by increasing/decreasing organ area, such as cortex thickness, stele thickness and pith area compared to control. In conclusion, under saline regimes, both species adapted specific characteristics of the roots and stems for better survival under saline environments.
For citation : Kheloufi, A., Mansouri, L. M. (2019): Anatomical changes induced by salinity stress in root and stem of two Acacia species (A. karroo and A. saligna). Agriculture and Forestry, 65 (4): 137-150. DOI:10.17707/AgricultForest.65.4.12
Keywords : Acacia, forestry, salt tolerance, NaCl, osmoprotection
   
download paper

 

ISSN 0554-5579 (Printed)
ISSN 1800-9492 (Online)
DOI : 10.17707/AgricultForest

Search

Author (s) :
Title :
Keywords :
Volume 66 / Issue 3
to be published in:
7 days, 15 hours, 14 minutes.
r