Growth and Ion Accumulation in Some Wheat Genotypes under NaCl Stress

Shirazi, M.U.; Asif, Shah; Khanzada, B.; Khan, Muhammad Arif; Ali, Mohammad; Mumtaz, S.; Yousufzai, M. N. K.; ., M. Salim Saif

doi:10.3923/pjbs.2001.388.391

Cited by 26 publications

(5 citation statements)

References 6 publications

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“…Wheat ( Triticum aestivum L.) is a major staple food crop for more than one third of the world population and is the main staple food of Asia [15]. Seed germination and seedling growth of wheat, like other crops, were negatively affected by drought and salinity stresses [16].…”

Section: Introductionmentioning

confidence: 99%

Mitigation of salt stress in wheat seedlings by halotolerant bacteria isolated from saline habitats

et al. 2013

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Eighty four halotolerant bacterial strains were isolated from the saline habitats and screened for growth at different NaCl concentrations. All grew well at 5% NaCl, but only 25% isolates showed growth at 20% NaCl concentration. Five strains SL3, SL32, SL35, J8W and PU62 growing well in 20% NaCl concentrations were further characterized for multiple plant growth promoting traits such as indole −3- acetic acid (IAA) production, HCN and siderophore production, ACC deaminase activity and P-solubilization. None were positive for HCN production and PCR amplification of acdS, the structural gene for ACC deaminase enzyme was found negative. 16S rRNA gene sequencing analysis of the five strains showed them to belong to two genera Bacillus and Hallobacillus. In vitro experiments showed that salt concentrations had significant inhibitory effects on development of seedlings but not on the growth of the bacterial strains. Inoculation of the 5 halotolerant bacterial strains to ameliorate salt stress (80 mM, 160 mM and 320 mM) in wheat seedlings produced an increase in root length of 71.7% in comparison with uninoculated positive controls. In particular, Hallobacillus sp. SL3 and Bacillus halodenitrificans PU62 showed more than 90% increase in root elongation and 17.4% increase in dry weight when compared to uninoculated wheat seedlings at 320 mM NaCl stress indicating a significant reduction of the deleterious effects of NaCl. These results indicate that halotolerant bacteria isolated from saline environments have potential to enhance plant growth under saline stress through direct or indirect mechanisms and would be most appropriate as bioinoculants under such conditions.

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Section: Introductionmentioning

confidence: 99%

Mitigation of salt stress in wheat seedlings by halotolerant bacteria isolated from saline habitats

et al. 2013

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“…Wheat (Triticum aestivum L.) is a major food crop for more than one-third of the world population and is the staple food in Asia (Shirazi et al, 2001). Wheat cultivation in Sudan has been expanding in the last decades to latitudes lower than 15 o N as a winter crop, occupying the largest area in Sudanese irrigated schemes, and it is now the second most important cereal crop after sorghum in the country (Saunders & Hettel, 1994).…”

Section: Introductionmentioning

confidence: 99%

Effects of Nitrogen on Seedling Growth of Wheat Varieties under Salt Stress

Ibrahim¹,

Zhu²,

Zhou³

et al. 2016

JAS

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Wheat growth is hampered by various environmental stresses including salinity. The aim of the present study was to evaluate the nitrogen effect on seedling emergence and growth under salinity conditions. For this reason the seeds of wheat (Triticum aestivum L.) varieties Argine, and Elnilein from Sudan and Xumai 30, and Yang 10-13 from China were cultured under four NaCl solutions containing (0, 100, 150, and 200 mM NaCl) and three nitrogen (N) fertilizer levels (N0 = 0, N1 = 105, and N2 12 = 210 kg N/h). Emergence percentage and early growth were determined. There were significant differences among salinity and N levels for emergence percentage shoot and root length, dry weight, salt tolerance index, and seedling vigor index. At all salinity levels, the varieties showed similar salt resistance, but each responded differently. Nitrogen affected positively on the seedling characteristics under saline soil. Elnilein had a better emergence percentage, shoot and root length, dry weight, salt tolerance index, and seedling vigor index than the other varieties. Elnilein is recommended for saline soils. We suggest that a simple seedling test would be a useful selection tool in order to develop productive new wheat lines on saline soils.

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“…The first factor 7 levels of NaCl beside the control treatment. The salinity NaCl levels 2, 4, 6, 8, 10, 12 and 14 dS/m- 1 NaCl was used. The second factor include eleven bread wheat cultivars were Sakha 93, Gemmeza 7, Egaseed 7, Sakha 94, Gemmeza 10, Egaseed 3, Masr 2, Masr 1, Gemmeza 9, Sids 1 and Giza 168.…”

Section: Plant Materialsmentioning

confidence: 99%

“…Wheat production in the Mediterranean region is restricted mainly by the accessibility of water resources and soil salinity. Wheat is a considered main staple food crop for more than one third of the world population [1] and is the main food for Egyptian. There is a huge shortage in production of wheat in Egypt, it imported more than 50% of our consumption [2].…”

Section: Introductionmentioning

confidence: 99%