Alleviation of Salinity Stress Effects in Forage Cowpea (Vigna unguiculata L.) by Bradyrhizobium sp. Inoculation
Alaa El-Dein Omara, Tamer El-Gaafarey
Microbiology Research Journal International · pp. 1–16 · Published 5 Apr 2018
10.9734/MRJI/2018/40727Abstract
To investigate salt stress and inoculation effects on nodulation and growth of forage cowpea (Vigna unguiculata cv. Baladi), experiments were conducted under laboratory, greenhouse and field conditions. Six isolates were tested for salt tolerance by culturing in liquid medium supplemented with 5, 10, 15, 20, 25 and 30 g L-1 NaCl and for their nodulation and N2-fixation abilities under different soil salinity (1.87, 3.16, 5.88, 9.12 and 12.14 dS m-1), were evaluated, followed by application of single and dual inoculation with the two selected halo-tolerant isolates on the growth dynamics in salt-affected soils (9.12 dS m-1), under normal and saline irrigation water during 2016 and 2017 seasons. In liquid medium supplemented with 30 g L-1 NaCl, results showed that isolate of SARS-Rh5 was the most tolerant to grow compared to the others. In respect to the inoculation, the highest values of plant height (20.26 and 20.73 cm plant-1), dry weight of plant (1.08 and 1.11 g plant-1), dry weight of nodules (0.056 and 0.056 g plant-1), and nitrogen content (22.26 and 23.82 mg plant-1), were recorded by SARS-Rh3 and SARS-Rh5 isolates compared to other isolates and control, respectively. In a field trial, a highly significant increase caused by dual inoculation with SARS-Rh3 + SARS-Rh5 (T4), in nodulation, growth and yield compared to single inoculation treatments and control. Also, an increase of 30% in K+ content and 45% in K+/Na+ ratio but reached to the reduction of 10% in Na+ content were noticed during the two growing seasons. So that, the inoculation of cowpea plants grown under soil salinity conditions with tolerant Bradyrhizobiumis very urgent to help the plant to circumvent the unfavourable conditions.
Cited by 12
S. Suriya, Chinnadurai Immanuel Selvaraj · Frontiers in Plant Science · 2026
T. Khalifa, Mohssen Elbagory, A. Omara · Plants · 2021
Sahar El-Nahrawy, Mohssen Elbagory, A. Omara · 2020
T. El-Gaafarey, Shereen M. el-Nahrawy, Sahar El-Nahrawy · 2020
I. ABDEL-FATTAH, Sahar El-Nahrawy, M. El-Mansoury · Egyptian Journal of Soil Science · 2020
Toby Le, S. Hekmat · 2020
Sahar El-Nahrawy, M. Yassin · 2020
S. Debnath, D. Rawat, Aritra Kumar Mukherjee · Biostimulants in Plant Science · 2019
Rabab A. M. Hammad, M. Elbagory · Journal of Advances in Microbiology · 2019
H. Amiri, Hossein Ajamnorozi, M. T. Feyzbakhsh · Romanian Agricultural Research · 2025
Related research
- Improvement of Faba Bean Production in Saltaffected Soils by Rhizobium leguminosarum bv. viciae Inoculation and Phosphorus Application — shares topic coverage
- Evaluation of the Symbiotic Efficiency of Rhizobium Strains Applied to Bituminaria bituminosa (L.) Stirton — shares topic coverage
- Response of Soybean [Glycine max (L.) Merrill] to Local Nitrogen Fixing Bacteria Inoculation in Divo Area, Center-south of Côte d’Ivoire — shares topic coverage
- Role of Trichoderma spp in Composting to Improve Soil Physicochemical Properties, Growth, Yield and Crop Protection: A Review — shares topic coverage
Article metrics
Real usage data collected on this platform.
0
Page views
0
PDF downloads
0
Outbound clicks
12
Citations
Views by country
Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".
No views recorded yet.
Traffic sources
Referring site, by host.
No traffic recorded yet.
Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.