Assessment of Multiple Tolerance Indices for Salinity Stress in Bread Wheat (Triticum aestivum L.)

Singh, Sanjay; Sengar, RS; Kulshreshtha, Neeraj; Datta, Debi Rani; Tomar, R. S.; Rao, Vivekanand Pratap; Garg, D. K.; Ojha, Ashish

doi:10.5539/jas.v7n3p49

Cited by 40 publications

(42 citation statements)

References 24 publications

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“…Among the strategies used to mitigate the salinity-induced adverse effects, the priming of seeds within organic salt solutions (osmopriming) or water (hydropriming) are cited as the most appropriate, efficient and economic techniques to enhance the rate and the uniformity of germination under saline conditions (SINGH et al, 2015;MATIAS et al, 2018). Research indicates that nitrate-containing compounds may function more efficiently than other salts as priming agents.…”

Section: Introductionmentioning

confidence: 99%

Seed priming improves the germination and growth rate of melon seedlings under saline stress

et al. 2019

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The germination and growth of melon (Cucumis melo L.) plants can be severely affected by excess salts in the soil or irrigation water; however, negative effects of salt stress can be attenuated using appropriate methods of seed priming. Thus, effects of osmopriming as inducer of salt stress tolerance in melon seeds exposed to salinity levels were investigated in this study. Seeds were soaked for 22 h at 25 °C in the dark in distilled water (hydropriming) or 0.5% KNO3 solution (osmopriming), and after drying, were distributed in plastic boxes with blotter paper containing different NaCl solutions prepared with osmotic pressure of 0.0 MPa (control), -0.3 MPa (mild stress), and -0.6 MPa (severe stress). Unprimed dry seeds were taken as control. The plastic boxes were kept into a seed germinator, at 25 °C for 14 days. A completely randomized design in a 3 × 3 factorial schemes with four replicates of 25 seeds was used. Results showed that the seed priming with water and KNO3 may be successfully applied on melon seeds to alleviate the adverse effects of saline stress in initial stages of plant growth. However, under severe salt stress conditions, hydropriming should be used because it results in higher germination and initial growth rate of the seedlings when compared to the osmopriming. Use of unprimed seeds should not be adopted in cultivation areas affected by salinity because they result in low germination rate and reduced initial plant growth.

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Section: Introductionmentioning

confidence: 99%

Seed priming improves the germination and growth rate of melon seedlings under saline stress

et al. 2019

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“…Wheat genotypes with the higher value of both SSI and TOL were found highly susceptible to HS also observed by Sharma et al [127] and Singh et al [128]. There is a significant correlation (positive and negative) between STIs and GY, which can be used to screen the wheat genotypes which are tolerant to HS [110,129]. The correlations between GY of wheat and each of MP, GMP, and GY were positive [130].…”

Section: Stress Tolerance Indices Could Be Used Effectively For the Smentioning

confidence: 84%

Wheat (Triticum aestivumL.) in the Rice-Wheat Systems of South Asia Is Influenced by Terminal Heat Stress at Late Sown Condition: A Case in Bangladesh

Hossain¹,

Islam²,

Islam³

2021

Plant Stress Physiology

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Wheat plays an important role in attaining food and nutritional security in Bangladesh after rice. The demand of wheat has been increasing every year at the rate of 13% due to rapid changes in dietary habits, socio-economic upliftment, enhancement of per capita income, etc. Bangladesh Wheat and Maize Research Institute (BWMRI) has already released 34 high yielding, disease-resistant, and abiotic stress-tolerant wheat varieties, and improved management practices to the farmers. Although all the released varieties have climatic yield potential as high as 6.0 t ha −1 with the attainable average yield is 4.0-4.5 t ha −1 , the national average yield in farmers' field is only 3.49 t ha −1 ; it is specified that there is a huge yield gap existing among potential, attainable and actual yields. One of the most important reasons for this yield gap of wheat is the terminal high temperature stress (HS) in late sowing wheat. Generally, farmers in Bangladesh are sowing wheat lately due to delay in sowing monsoon rice and subsequent late harvest of the rice; as a result, late sown wheat faces terminal HS at reproductive stage. The chapter highlighted the consequences of terminal HS on wheat and potential approaches to mitigate the stress in Bangladesh.

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“…Current programmes focusing on germplasm diversity and crop improvement are a key to sustainable crop production. For the effective exploitation of cereal germplasm, assessment of the available genetic resources seems imperative (Zubair et al, 2007;Singh et al, 2015). Morphological characterization is an essential step in evaluating the diversity of salt tolerance degree in barley germplasm.…”

Section: Discussionmentioning

confidence: 99%

Salt tolerance in barley originating from harsh environment of North Africa

Allel¹,

Ben-Amar²,

Abdelly³

2016

Aust J Crop Sci

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Soil salinity is a major abiotic stress in worldwide agriculture. This has incited a quest towards with an aim of improving the crop plants. An insight into the diversity of barley landraces for salinity tolerance will facilitate their use in genetic improvement and breeding programs. Three gene pools representative of Hordeum vulgare L. grown in the North African region and collected from Tunisia, Algeria and Egypt were evaluated at the reproductive stage under non saline and two saline conditions (0, 100 and 200 mM NaCl). A total of 26 agronomic, morphological and yield-related traits were examined by analysis of variance. A significant genetic variation was observed. We successfully identified a set of accessions originating from severe agroclimatic conditions including Tozeur2, Tichedrett, Kerkena and Kebelli2 which remaining the most productive at high salinity having around 4 g grain yield production per plant and about 11 g whole plant dry weight per plant. Cluster analysis and principal component analysis were performed using salt tolerance index (STI), which provided a clear separation of barley landraces. The first three principal components (PC) contributed 64.05% and 66.01% of the variability amongst genotypes at moderate and high salinity level, respectively, with PC1 comprising yield-related traits. Significant number of highly salt tolerant genotypes grouping Early1, Tichedrett, Azrir and Giza125 from North African harsh environment was identified. Data indicate that specific barley genotypes showing differential responses against salinity could be useful as potential germplasm sources for comparative genomic studies and future breeding programs.

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Assessment of Multiple Tolerance Indices for Salinity Stress in Bread Wheat (Triticum aestivum L.)

Cited by 40 publications

References 24 publications

Seed priming improves the germination and growth rate of melon seedlings under saline stress

Seed priming improves the germination and growth rate of melon seedlings under saline stress

Wheat (Triticum aestivumL.) in the Rice-Wheat Systems of South Asia Is Influenced by Terminal Heat Stress at Late Sown Condition: A Case in Bangladesh

Salt tolerance in barley originating from harsh environment of North Africa

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