Response of Two Wheat Varieties to Salt Stress of Newly Reclaimed Soil in Upper Egypt

Wheat is an important cereal in terms of human consumption in many countries of the world. It is grown mainly in arid and semi-arid Mediterranean countries. In these areas, salinity of soils and irrigation water is one of the limiting factors in plant productivity and agricultural yield. The present work consisted in evaluating the morpho-physiological and biochemical behavior of two durum wheat varieties V1 (Gta dur), V2 (Vitron) subjected to increasing concentrations of NaCl during the germination phase and the growth phase in the laboratory. The results obtained showed several revelations in terms of morphological imbalance (leaf area, germination percentage, root length, physiological variation, decrease or increase of assimilating pigments, Relative Water Content (RWC), etc), and biochemical bioaccumulation (proline, soluble sugars, proteins and elevation of activity of CAT antioxidant enzymes). At the level of treatments, the development of the seedlings of two varieties was better on soil salty and sprinkled with water than in the presence of saline concentrations. A certain tolerance of the two genotypes was particularly marked in the Vitron variety against salt stress.

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Genotypic variability for salt stress tolerance among wild and cultivated wheat germplasms at an early development stage

Open Agriculture ◽

10.1515/opag-2019-0035 ◽

2019 ◽

Vol 4 (1) ◽

pp. 375-380

Author(s):

Imen Klay ◽

Leila Riahi ◽

Hajer Slim Amara ◽

Abderrazak Daaloul

Keyword(s):

Salt Stress ◽

Stress Tolerance ◽

Common Wheat ◽

Triticum Turgidum ◽

Wheat Variety ◽

Development Stage ◽

Salt Stress Tolerance ◽

Wheat Varieties ◽

The Common ◽

Photosynthetic Traits

AbstractThis study was conducted to evaluate the variability of salt tolerance potentials among nine wheat genotypes representing wild and cultivated species namely Triticum turgidum subsp. durum, Triticum aestivum and Aegilops geniculata. Ionomic and photosynthetic traits were used for the screening of the studied samples when faced with four salinity levels of NaCl (0, 50, 100 and 150 mM) under green house conditions at the seedling stage. The investigated genotypes exhibited different levels of salt stress tolerance. Ionomic and photosynthetic traits underline the distinctiveness of the common wheat varieties which highlighted particular performances under salt stress conditions and showed higher tolerance potentials among the studied genotypes. Interestingly, the Vaga variety showed more ability to maintain higher K+/Na+ ratios and Pq coefficients compared with the control conditions and stable Fv/F0 and Fv/Fm ratios. Stable behaviour was exhibited by wild Aegilops accessions while durum wheat varieties have been shown to be more sensitive to salt stress. Further investigations were required for the common wheat variety Vaga, which could be useful for successful breeding and biotechnological improvement strategies concerning wheat species.

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Morpho-physiological and molecular responses of two Libyan bread wheat cultivars to plant growth regulators under salt stress

Italian Journal of Agronomy ◽

10.4081/ija.2020.1633 ◽

2020 ◽

Vol 15 (3) ◽

Author(s):

El Hadi Hadia ◽

Amor Slama ◽

Leila Romdhane ◽

Hatem Cheikh M’hamed ◽

Ahmed Houssein Abodoma ◽

...

Keyword(s):

Gene Expression ◽

Salt Stress ◽

Plant Growth ◽

Gibberellic Acid ◽

Plant Growth Regulators ◽

Bread Wheat ◽

Growth Regulators ◽

Glycine Betaine ◽

Growth Yield ◽

Wheat Varieties

To study the effects of salt stress and plant growth regulators (kinetin, gibberellic acid, potassium) on growth, yield, glycine betaine content, phosphoenolpyruvate carboxylase (PEPC) and ribulose biphosphate carboxylase (RBC) gene expression of two Libyan bread wheat varieties, a factorial design of greenhouse experiment with three replications was conducted. Results revealed that salt stress significantly reduced plant growth and productivity of both varieties. Moreover, the addition of kinetin + potassium and gibberellic acid + potassium had improved the performance of the morpho-metric parameters of both genotypes under salt stress; but the performance was more effective for kinetin treatment than for gibberellic acid. At the biochemical level, the results showed that salt stress increased glycine betaine contents in both varieties with different proportions. This increase is more elevated in the presence of kinetin + potassium than the treatment with gibberellic acid+ potassium, which showed an almost similar result as in only salt stress. At the molecular level, the effects of salt stress and plant growth regulators on the PEPC and RBC gene expression showed that the increase was significantly higher for kinetin, gibberellic acid, and salt stress when compared to the control.

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Comparison of Germination and Seedling Characteristics of Wheat Varieties from China and Sudan under Salt Stress

Agronomy Journal ◽

10.2134/agronj15.0176 ◽

2016 ◽

Vol 108 (1) ◽

pp. 85-92 ◽

Cited By ~ 8

Author(s):

Muhi Eldeen Hussien Ibrahim ◽

Xinkai Zhu ◽

Guisheng Zhou ◽

Nimir Eltyb Ahmed Nimir

Keyword(s):

Salt Stress ◽

Wheat Varieties ◽

Seedling Characteristics

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QTLs for seedling traits under salinity stress in hexaploid wheat

Ciência Rural ◽

10.1590/0103-8478cr20170446 ◽

2018 ◽

Vol 48 (3) ◽

Cited By ~ 2

Author(s):

Yongzhe Ren ◽

Yanhua Xu ◽

Wan Teng ◽

Bin Li ◽

Tongbao Lin

Keyword(s):

Salt Stress ◽

Salt Tolerance ◽

Salinity Tolerance ◽

Hexaploid Wheat ◽

Dry Weight ◽

Interval Mapping ◽

Mapping Method ◽

Stress Conditions ◽

Wheat Varieties ◽

Seedling Traits

ABSTRACT: Soil salinity limits agricultural production and is a major obstacle for increasing crop yield. Common wheat is one of the most important crops with allohexaploid characteristic and a highly complex genome. QTL mapping is a useful way to identify genes for quantitative traits such as salinity tolerance in hexaploid wheat. In the present study, a hydroponic trial was carried out to identify quantitative trait loci (QTLs) associated with salinity tolerance of wheat under 150mM NaCl concentration using a recombinant inbred line population (Xiaoyan 54×Jing 411). Values of wheat seedling traits including maximum root length (MRL), root dry weight (RDW), shoot dry weight (SDW), total dry weight (TDW) and the ratio of TDW of wheat plants between salt stress and control (TDWR) were evaluated or calculated. A total of 19QTLs for five traits were detected through composite interval mapping method by using QTL Cartographer version 2.5 under normal and salt stress conditions. These QTLs distributed on 12 chromosomes explained the percentage of phenotypic variation by individual QTL varying from 7.9% to 19.0%. Among them, 11 and six QTLs were detected under normal and salt stress conditions, respectively and two QTLs were detected for TDWR. Some salt tolerance related loci may be pleiotropic. Chromosome 1A, 3A and 7A may harbor crucial candidate genes associated with wheat salt tolerance. Our results would be helpful for the marker assisted selection to breed wheat varieties with improved salt tolerance.

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Response of morphological and biochemical traits and transcriptomic of CDPKs and P5CS Genes to phytohormones and nutrients in two bread wheat germplasms under salinity conditions

ROMANIAN BIOTECHNOLOGICAL LETTERS ◽

10.25083/rbl/26.6/3054-3061 ◽

2021 ◽

Vol 26 (6) ◽

pp. 3054-3061

Author(s):

ELHADI HADIA ◽

AMOR SLAMA ◽

AZIZA ZOGHLAMI ◽

LEILA ROMDHANE ◽

AHMED HOUSSEIN ABODOMA ◽

...

Keyword(s):

Salt Stress ◽

Bread Wheat ◽

Molecular Level ◽

Wheat Varieties ◽

Calcium Dependent ◽

Genes Expression ◽

Giberellic Acid ◽

Dependent Protein ◽

Biochemical Level ◽

Calcium Dependent Protein Kinases

Several enzymes play an important role in the biosynthesis of osmolyte in plants. The main objective of this work is to study the effects of salt stress, kinetin+potassium and giberellic acid+potassium on calcium-dependent protein kinases (CDPKs) and delta-1-pyrroline-5- carboxylate synthase (P5CS) genes expression of two bread wheat varieties. The results shodwe that, salts stress reduced the plant growth of the two wheat germplasms. Moreover, the addition of kinetin+ potassium improved the performance of morphometric parameters while the addition of giberellic acid +potassium has less effect. On the biochemical level, results indicated that salt stress increased the proline contents compared with control plants. Extra increase in proline contents was recorded by kinetin+ potassium, while the treatment of giberellic acid +potassium showed almost similar results as in salt stress only. On the molecular level, salt stress, kinetin and giberellic acid significantly increased the two genes expression of CDPKs and P5CS with more effect in presence of kinetin+ potassium.

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THE USE OF EMBRYO CULTURES FOR STUDYING SALT STRESS TOLERANCE OF FOUR DIFFERENT BREAD WHEAT VARIETIES AND THEIR PROMISING MUTANTS

Zagazig Journal of Agricultural Research ◽

10.21608/zjar.2017.52239 ◽

2017 ◽

Vol 44 (5) ◽

pp. 1693-1713

Keyword(s):

Salt Stress ◽

Stress Tolerance ◽

Bread Wheat ◽

Salt Stress Tolerance ◽

Wheat Varieties ◽

Embryo Cultures

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Effect of Sodium Silicate and Salicylic Acid on Sodium and Potassium Ratio in Wheat (Triticum aestivum L.) Grown Under Salt Stress

10.21203/rs.3.rs-680832/v1 ◽

2021 ◽

Author(s):

Ayesha Mushtaq ◽

Nazish Sabir ◽

Tasneem Kousar ◽

Sabeena Rizwan ◽

Uzma Jabeen ◽

...

Keyword(s):

Salicylic Acid ◽

Salt Stress ◽

Sodium Silicate ◽

Growth Parameters ◽

Sodium Concentration ◽

Triticum Aestivum L ◽

Growth And Yield ◽

Wheat Varieties ◽

Wheat Genotypes ◽

Normal Environment

Abstract Purpose Salinity pose severe threat to cultivation as it drastically affects the plant sustainability and yield. The intended aim of current consensus is to assess effects of sodium silicate and salicylic acid on wheat genotypes (slat tolerant and salt sensitive) grown under salt. Methods This experiment was designed to check the effect of silicon on wheat varieties, so four different wheat genotypes named as (Umeed, Rasco, Zarghoon and Shahkaar) were grown in hydroponics under saline and normal environment. Sodium silicate and salicylic acid were applied on all varieties to determine the slat tolerance ability. Plants were harvested at maturity and different physical and chemical aspects were recorded. Results To assess the salt stress on growth and yield of wheat genotypes. Wheat grown in saline conditions with sodium silicate supplementation showed improvement in all growth parameters as compared to the plants grown under salt stress without silicon supplementation. Higher contents of potassium were observed in plants grown under salt stress with silicon supplementation however, potassium concentration was found less in salicylic acid treatment and control under salt stress. Sodium concentration was found higher under salt stress but sodium silicate application reduced Na+ uptake under salt stress. Significance increase in K+ : Na+ ratio in roots enhance the translocation which in turn elevates salt tolerance ability. Among wheat varieties potassium uptake was quite high in Umeed and Rasco as compared to Zarghoon and Shahkar. Conclusion Based on current results it can be deduced that application of sodium silicate on different wheat varieties mitigated Na+ toxicity by elevating K+: Na+ ratio and net translocation rate in salt stressed plants.

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