Salt stress in wheat pdf

The results showed significant reductions in chlorophyll content, 14c fixation photosynthesis. After 3 weeks of salt treatment, clipper ceased growing whereas sahara resumed growth similar to the control plants. Present study was carried out to study the effect of salt stress on morphomolecular characters of wheat genotypes. Alleviation of adverse effects of salt stress in wheat. Metabolic responses to salt stress of barley hordeum vulgare. Hyperspectral images were captured one day after salt application when there were no visual. Pdf approaches to enhance salt stress tolerance in wheat. Rice crop is considered as the most sensitive among various cereal crops fig. Due to salt stress, flag leaf proline content was increased in salt tolerant wheat genotypes whereas the proline level was decreased in the sensitive one compared to the control. Evaluation of wheat genotypes for salt tolerance based on some. Only a few studies were investigating salinity stress of wheat plants at germination stage, seedling stage, and, furthermore, under field conditions.

Salt stress lessens the development of leaves, the stomata close and. These metabolites showed the capacity to enhance the plants growth, yield as well as stress tolerance. The soil was artificially salinized to a range of salinity levels i. Pdf physiological enhancements for alleviation of salt. Time of salt stress affects growth and yield components of irrigated. Physiological enhancements for alleviation of salt stress in wheat. Jan 11, 20 eighty four halotolerant bacterial strains were isolated from the saline habitats and screened for growth at different nacl concentrations. Suntop performed high tolerance to salinity, being similar tolerance to salinity with cm72, compared with cv. The agricultural production in many countries is severely impaired because the worlds total 6% land area, i. Highph of alkali stress induced the most of phosphate and metal ions to precipitate. The data showed that different level of salinity significantly affected the growth attributes by reducing root and shoot length.

Seeds of 20 wheat genotypes were germinated in petri dishes on a sand bed irrigated with saline 15 ds m1 and control solutions for 10 days and also tested at different salinity levels control, 4, 6, 8, and 10 ds m1 which were artificially developed in the. Salt stress tolerance and antioxidative mechanisms in wheat plants triticum durum l. Suntop and sensitive sunmate wheat cultivars and a salt tolerant barley cv. In this study, sulfated chitooligosaccharide scos was applied to wheat seedlings to investigate its effect on the plants defense response under salt stress. Study the effect of salt stress on morphomolecular. This study compared a large suite of morphophysiological traits in synthetic and natural hexaploid. Identification and characterization of salt tolerance of.

To use them, it is necessary to determine the linkage between quantitative trait loci qtl and such markers. Also, we investigated the direct effect of salt on mitochondrial enzyme activities. An experiment was conducted using a completely randomized design of four replications for germination indices in wheat cultivars, sahara and clipper, which differed in salinity tolerance under the experimental conditions used. Wheat provides nearly 55% of the carbohydrates and 20% of the food calories consumed globally. May 15, 2019 salt stress is one of the principal limitations in wheat production. Abstract the effects of salt stress on wheat triticum aestivum was assessed by application of various concentrations 100, 150, 200 and 250mm of two types of salts nacl, kcl and mixture of.

Salicylic acid sa has an important role in droughttolerance in wheat triticum aestivum l. Screening of wheat genotypes as salt tolerance through seed germination and early seedling growth is crucial for their evaluation. Hyperspectral image dataset for salt stress phenotyping of wheat. 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. An experiment was conducted using a completely randomized design of four replications for germination indices in wheat wheat is consumed as a staple food by more than 36% of world population. The impact of salt stress under different salinity level 0,25,50,75,100,125,150 mm nacl on five varieties of wheat viz. Germination of primed seed under nacl stress in wheat. It is reported that about 7 % of the total earths land and 20 % of the total. Chlorophyll fluorescence as criterion for the diagnosis. The respective values were 6 and 4 for wheat plants. The dataset contains hyperspectral images of four wheat lines, each with a control and a salt nacl treatment. Irrigation by salt water with concentrations tap water tw as a control 300 mgl 3000, 6000.

Impact of salt stress on five varieties of wheattriticum. Coleoptile and root growth was measured as the response of cultivars to. The primary goal of this study was to quantitatively rank salt tolerance in wheat using hyperspectral imaging. Potassium and zinc increase tolerance to salt stress in wheat. The numbers of tillers were 10 and 7 for barley plants at 0. A greenhouse hydroponic experiment was performed using salttolerant cv. Tabasi, sensitive to salt stress and arvand, tolerant to salt stress were planted in pots 20 cm diameter and 30 cm tall.

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. Salinity stress has significant adverse effects on crop productivity and yield. Mitigation of salt stress in wheat seedlings by halotolerant. Foliar spray with asa improved the growth of nonstressed plants of both cultivars, but did not alleviate the adverse effects of salt stress on plants. Salt stress severely reduced growth of both wheat cultivars. Physiological and anatomical mechanisms in wheat to cope with. However, the physiological bases and the relative contributions of immediate effects of polyploidization and subsequently acquired adaptive changes in the salt tolerance of hexaploid wheat remained elusive. The recently developed cultivars form a much diversed genetic base and may therefore possess a wider range of salts stress tolerance. Abstractplant growth is affected by the osmotic stress as well as toxicity of salt in leaves. Pdf responses of wheat genotypes to salt stress in.

Physiological, biochemical, epigenetic and molecular analyses of wheat triticum aestivum genotypes with contrasting salt tolerance. Experiments were conducted to improve wheat seed performance under salinity stress conditions after priming. Metabolic responses to salt stress are described for two barley hordeum vulgare l. However, saltinduced reduction in leaf chlorophyll a was improved with asa application. Soil salinity affects a large and increasing amount of arable land worldwide, and genetic and agronomic solutions to increasing salt tolerance are urgently needed. The response of wheat to salt stress is genetically and physiologically controlled and may differ from one growth stage to another.

Considering the devastating effect of salt stress on plants, one of the important tasks for plant biologists is to explore the approaches that are able to develop salt tolerance in crop plants. The harmful effect of alkali stress on the growth and photosynthesis of wheat were stronger than those of salt stress. Effect of salts stress on the growth and yield of wheat. Salt stress tolerance and antioxidative mechanisms in wheat. In order to study the effect of salts stress on the growth and yield of wheat cv. Hydroponically grown seedlings of four wheat varieties differing in drought and salt tolerance were exposed to consecutive water polyethylene glycol, peg and salinity nacl. Interactive effect of foliar applied ascorbic acid and salt. Salt stress effects on respiration and growth of germinated.

Molecular markers provide a rapid approach to breeding for desired traits. We found that when seedlings were subjected to type ii salt stress for 32 d, 2 x, nat6, and neo6 all showed better growth than 4x fig. Wheat crop is very sensitive to salt stress, so the current study was examined the alleviating effect of potassium and zinc in salinity stress tolerance in five wheat varieties. Salinity stress undergoes in abiotic stress which is generated by mineral salts. Pdf wheat is one of the staple food in world as well as in india. Four wheat lines were assayed in a hydroponic system with control and salt treatments 0 and 200 mm nacl. Soil salinity and sodicity are major constraints to global cereal production, but breeding for tolerance has been slow. Although the goal of this study was plant phenotyping to rank salt tolerance of wheat lines, this dataset can be used for other research purposes, such as developing classification algorithms to discriminate healthy and stressed plants and developing methods for spectral feature selection to reduce the dimension of hyperspectral images. Jan 15, 2017 screening of wheat genotypes as salt tolerance through seed germination and early seedling growth is crucial for their evaluation.

Potassium and zinc increase tolerance to salt stress in. Most of all, the proline content in dpp1 group was obviously higher than that of other groups, indicated that the wheat seedlings of dpp1 group had stronger osmotic regulation ability. Multidimensional evaluation of response to salt stress in wheat. Pdf on may 24, 2017, mirza hasanuzzaman and others published approaches to enhance salt stress tolerance in wheat find, read and cite all the research you need on researchgate. Sakha69 exhibited salinity tolerance greater than gemaza1 and sa ameliorated. The results suggested that the lowermw samples dpp1, 3. The effect of drought and salt stresses on the water soluble carbohydrate content in wheat triticum aestivum l. Modifications of water status, growth rate and antioxidant system in. Under alkali stress, ca sharply increased in roots, however, it. Seeds were germinated and grown in long dark cups using distilled water as control and two levels of salt stress imposed by 9 and 15 dsm nacl solution for 48 hours. Effect of salicylic acid on alleviation of salt stress on. A greenhouse hydroponic experiment was performed using salt tolerant cv.

Hyperspectral image dataset for salt stress phenotyping of. At the same time the productivity of wheat across the globe is influenced by several abiotic stresses i. Interactive effect of foliar applied ascorbic acid and. Hydroponically grown seedlings of four wheat varieties differing in drought and salt tolerance were exposed to consecutive. This study was conducted to investigate the genetic basis of. The growth of wheat seedling leaves and roots decreased under salinity stress compared with that of the control group. Lowmolecularweightt polysaccharides from pyropia yezoensis. Salinity is a significant constraint for crop quality and production, affecting wheat growth, yield and quality in the major wheat growing regions of the world. Physiological and anatomical mechanisms in wheat to cope.

Thus, a better understanding of these mechanisms and processes would help in the breeding programmes to enhance wheat production under salt stress. Other approaches to improving salt tolerance in wheat are based on mechanisms for salt tolerance, using physiological traits to select germplasm. Variation in response to salt stress at seedling and maturity stages among durum wheat varieties nejla turki1, tariq shehzad1, 2, moncef harrabi3, moktar tarchi3 and kazutoshi okuno1, 2 abstract. Kausar malik, in advances in rice research for abiotic stress tolerance, 2019. To determine the mechanism of respiratory changes under salt stress in wheat leaves, we conducted an integrated analysis of metabolite content, respiratory rate and targeted protein abundance measurements. The productivity of wheat is often adversely affected by salt stress which is associated with decreased germination percentage, reduced growth, altered reproductive behavior, altered enzymatic activity, disrupted photosynthesis. The results showed significant reductions in chlorophyll content, 14c fixation photosynthesis, plant. Frontiers a novel approach to assess salt stress tolerance. Variation in response to salt stress at seedling and. A number of studies have been carried out with different wheat genotypes to look for tolerance to salinity in iran e. Images were captured by a hyperspectral camera pika ii, resonon under natural light condition one day after salt application when there were no visual symptoms in wheat plants. To study the effect of bacteria on wheat tolerance to salinity stress, bread wheat seeds were inoculated with a. Soil analysis soil analysis of the experimental pots is presented in table 1.

Two pot experiments were conducted in a greenhouse to examine 14c fixation and its distribution in biochemical leaf components, as well as the physiological and anatomical adaptability responses of wheat triticum aestivum l. Bread wheat with high salinity and sodicity tolerance. Transcriptional responses of wheat roots inoculated with. Eighty four halotolerant bacterial strains were isolated from the saline habitats and screened for growth at different nacl concentrations. Growth and stomatal responses of bread wheat genotypes in. Salt stress is one of the principal limitations in wheat production. Plants vary enormously in resistance to salt stress, as seen in their diverse development reactions.

Apr 17, 2018 pps further increased the proline content in salt stressed wheat seedlings in order to counteract the salt induced osmotic stress. Effect of salinity on grain yield and quality of wheat and. All grew well at 5% nacl, but only 25% isolates showed growth at 20% nacl concentration. Growth response of barley and wheat to salt stress. Nov 21, 2008 salt stress substantially decreased the number of tillers in both crops, however, this reduction was more severe for wheat than barley.

Salt stress is the accumulation of excessive salt contents in the soil which eventually results in the inhibition of crop growth and leads to crop death. The antioxidant enzyme activities, chlorophyll contents, and fluorescence characters of wheat seedlings were determined at a certain time. Impact of salt stress on five varieties of wheattriticum aestivum l. Evolution of physiological responses to salt stress in. Identification and characterization of salt tolerance of wheat. For this the total of fifteen varieties were collected, to evaluate the genetic diversity under the normal field condition and the effect of salt. Germination characters and early seedling growth of wheat. Abstract salt tolerance of wheat triticum aestivum l. Triticum aestivum genotypes with contrasting salt tolerance.

In this study salt tolerance of wheat cultivars were examined at germination and seedling growth stages. Salt stress is one of the major abiotic stresses limiting crop production especially in arid and semiarid regions. Glycophytes cannot tolerate strong levels of salt stress in nature and their. The reduction in growth and yield varies between cultivars and salt concentrations of the medium 10. Wheat mitochondrial respiration shifts from the tricarboxylic. The results showed that treatment with exogenous scos could decrease the content of. Among the best known compatible solutes, proline and glycine betaine gb have been reported to increase greatly under salt and drought stresses r. Approaches to increasing the salt tolerance of wheat and. Salt stress responses and tolerance in wheat springerlink. The greater part of the generally utilized crops is delicate to salt stress flowers and colmer, 2008.

Comparative metabolic responses and adaptive strategies of. Hexaploid bread wheat is generally more salt tolerant than its tetraploid progenitor. Chlorophyll fluorescence as criterion for the diagnosis salt. Furthermore, there was a significant correlation between the tolerance of wheat seedlings to salt stress and mw of polysaccharides. Water uptake in both plants was substantially decreased by increasing salinity stress. Cm72 to evaluate how cultivar and species differ in response to salinity stress. Diagnosis salt stress in wheat triticum aestivum plants s international journal of chemical and biological engineering 3. Irrigation by salt water with concentrations tap water tw as a control 300 mgl 3000, 6000 mgl and their ec concentrations are equal 0.