scholarly journals Response of three tossa jute (Corchorus olitorius L.) cultivars produced in Benin to salinity stress at germination and young plant stages

2020 ◽  
Vol 7 (10) ◽  
pp. 8-21
Author(s):  
Belvida Loko ◽  
Koffi David Hambada Montcho ◽  
Armel Clément Goudjo Mensah ◽  
Mahougnon Baudouin Geoffroy Gouveitcha ◽  
Agapit Wouyou ◽  
...  
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Germination Rate ◽  
Growth Parameter ◽  
Tolerance Index ◽  
Young Plant ◽  
Randomized Design ◽  
Significant Difference ◽  
Plant Stage ◽  
Salt Tolerance Index

The response of three tossa jute cultivars Ordinaire, 5-Doigts and Acc : Sud 2 to salt stress was evaluated at germination and young plant stages. Five NaCl concentrations: 0; 30; 60; 90 and 120 mM NaCl were used. Seeds were submitted to NaCl in petri dishes and germination was checked every day during thirty days in a completely randomized design with four replicates. Four-week old plants were submitted in pots to the same five NaCl concentrations by irrigation every two days for two weeks in screen house. NaCl reduced seed germination rate in all cultivars from day 2 to day 30 and the germination index. At the end of the 30 days, salt stress reduced the final germination percentages with a significant difference among cultivars: cultivar 5-doigts was the least affected than the two other cultivars. Salt effect caused a reduction of young plant growth whatever the growth parameter considered with a significant difference among cultivars. The growth of cultivar Acc:Sud 2 was more affected by salt stress with the lowest salt tolerance index whereas that of cultivar Ordinaire was the least affected with the highest salt tolerance index. Thus, cultivar 5-Doigts appeared as the most resistant to salt stress at germination stage among the three cultivars; whereas cultivar Ordinaire followed by 5-Doigts was the most salt resistant at young plant stage.

scholarly journals Response of seven tomato (Lycopersicon esculentum Mill.) cultivars produced in Benin to salinity stress at young plant stage

2020 ◽  
Vol 7 (8) ◽  
pp. 1-11
Author(s):  
Eliane Kinsou ◽  
Armel Mensah ◽  
David K. Montcho Hambada ◽  
Séraphin Ahissou Zanklan ◽  
Agapit Wouyou ◽  
...  
Keyword(s):  
Salt Stress ◽  
Plant Growth ◽  
Growth Parameters ◽  
Growth Parameter ◽  
Salt Resistance ◽  
Young Plant ◽  
Resistance Level ◽  
Significant Difference ◽  
Plant Stage ◽  
Tomato Cultivars

In this study, we evaluated the salt resistance level of seven tomato cultivars Akikon, Tounvi, Thorgal, F1 Mongal, Padma, Petomech and TLCV15 at young plant stage. The experiment was laid out as a Randomized Complete Design (RCD) with four replications in a greenhouse. Three-week old plants from the seven cultivars were submitted in pots containing a mixture of potting soil and sand to five NaCl concentrations: 0; 30; 60; 90 and 120 mM NaCl corresponding respectively to an electric conductivity of 0.221; 3.827; 6.47; 10.56 and 14.02 dS.m-1 by irrigation every two days. Plant growth parameters were evaluated after two weeks. Salt effect caused a reduction of young plant growth whatever the growth parameter considered with a significant difference among cultivars. Growth of cultivars Padma, Akikon and Petomech was more affected by salt stress with two or three growth parameters significantly reduced at 30 mM NaCl whereas no growth parameter was significantly affected at less than 60 mM NaCl for cultivars Thorgal and Tounvi. Thus, cultivars Akikon, Petomech and Padma appeared as the most sensitive to salt stress. In contrast, cultivars Tounvi and Thorgal appeared as the most salt-resistant. Cultivars F1 Mongal and TLCV15 had intermediary behavior.

scholarly journals Salt Resistance of Tomato (Lycopersicon esculentum Mill.) Cultivars Produced in Benin at Germination Stage

2019 ◽  
pp. 1-12
Author(s):  
Eliane Kinsou ◽  
David Montcho ◽  
Séraphin Ahissou Zanklan ◽  
Julien Koffi Kpinkoun ◽  
Françoise Assogba Komlan ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Seed Germination ◽  
Germination Rate ◽  
Nacl Stress ◽  
Salt Resistance ◽  
Tolerance Index ◽  
Resistance Level ◽  
Significant Difference ◽  
Salt Tolerance Index ◽  
Germination Stage

Aims: In this research study, salt resistance level of seven tomato cultivars grown in Benin, namely Akikon, Tounvi; F1 Mongal, Petomech, Padma, TLCV 15 and Thorgal was evaluated at the germination stage. Study Design: The experiment was laid out as a completely randomized design with four replications. Place and Duration of Study: The experiment was carried out in the Laboratory of Plant Physiology and Abiotic Stresses Study of University of Abomey-Calavi, Republic of Benin from May to June, 2017. Methodology: Seeds were submitted to treatment with four NaCl concentrations (0; 30; 60 and 90 mM NaCl) in Petri dishes. Seed germination was checked every day during ten days incubation period. Four replicates of 40 seeds each were used. Results: NaCl reduced seed germination rate in all cultivars from day 2 to day 10 and the germination index proportionately to NaCl concentration. At the end of the 10 days, salt stress reduced the final germination percentages with a significant difference among cultivars: cultivars F1 Mongal followed by Akikon, Thorgal, TLCV15 and Tounvi were less affected in comparison with the two other cultivars. Salt Tolerance Index was significantly variable according to the cultivar with the highest values for cultivars F1 Mongal (1.086), Akikon (1.028), TLCV15 (1.005) and Tounvi (0.989) and the weakest value for cultivar Petomech (0.436). Conclusion: NaCl stress delayed seed germination and reduced the rate of final germination. Salt Tolerance Index was variable among the seven cultivars. Based on this criterion, cultivars F1 Mongal, Akikon, TLCV15 and Tounvi were the most salt-resistant whereas Petomech was the most salt-sensitive at germination stage.

Responses of seed germination, seedling growth under salinity stresses and variability for phenotypic traits in Tossa Jute (Corchorus olitorius L.)

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Md. Mia Mukul ◽  
Sheikh Shorif Uddin Ahmed ◽  
Nargis Akter ◽  
Md. Golam Mostofa ◽  
Md. Sohanur Rahman ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Seed Germination ◽  
Germination Rate ◽  
Phenotypic Traits ◽  
Tolerance Index ◽  
Corchorus Olitorius ◽  
Salt Tolerant ◽  
Fiber Yield ◽  
Good For ◽  
Salt Tolerance Index

Salinity is a serious abiotic stress to Jute and other crop cultivation at saline regions in the world. No salt tolerant Tossa Jute (Corchorus olitorius L.) variety was developed in Bangladesh. Hence, six Tossa Jute accessions were investigated at germination stage against six concentration levels (0.00 or d.H2O, 8.0, 10.0, 12.0, 14.0 and 16.0 dS m-1) of salt (NaCl) using RCB design at Bangladesh Jute Research Institute (BJRI) during March-July, 2020. Jute seeds collected from Gene Bank of BJRI were allowed to germinate under laboratory condition. Seed germination rate was adversely affected as well as delay in germination was prolonged with increasing the salt concentration. In control, seeds were germinated up to 14.0 dS m-1 salt solution. Among six genotypes, Acc. 1141 and Acc. 3801 showed the highest germination rate (86.67 %); Acc. 3801 gave maximum root length (17.0 mm), dry biomass (6.37 mg); and Acc. 1089 showed higher shoot length (10.0 mm), fresh weight (43.93 mg) and salt tolerance index (60.69 %) under 14.0 dS m-1 level. Higher relative salt harm rate (7.14 %) was observed in both Acc. 1141 and Acc. 3801 under 14.0 dS m-1 salinity indicating highly tolerance to salinity. Acc. 3801 and Acc. 1141 were found good for germination under salt stresses; Acc. 3801, Acc. 1089 for fiber yield and salt tolerance; Acc. 3801 and Acc. 1407 for higher fiber yield. Acc. 3801 was found good for salt tolerance and fiber yield content. The genotypes with good desirable characters would be used as breeding materials to develop high yielding salt tolerant Tossa Jute variety.

scholarly journals Genome-wide association analysis of cotton salt stress response-related sites

2021 ◽  
Author(s):  
Zeliang Zhang ◽  
Juyun Zheng ◽  
Zhaolong Gong ◽  
Yajun Liang ◽  
Zhiwei Sang ◽  
...  
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Association Analysis ◽  
Upland Cotton ◽  
Snp Markers ◽  
Tolerance Index ◽  
Salt Tolerant ◽  
Salt Stress Response ◽  
Genome Wide ◽  
Salt Tolerance Index

Soil salinization is the main abiotic stress factor affecting agricultural production worldwide, and salt stress has a significant impact on plant growth and development. Cotton is one of the most salt-tolerant crops. Its salt tolerance varies greatly depending on the variety, growth stage, organs, and soil salt types. Therefore, the selection and utilization of excellent salt-tolerant germplasm resources and the excavation of excellent salt-tolerant salt and salt resistance genes play important roles in improving cotton production in saline-alkali soils. In this study, we analysed the population structure and genetic diversity of 144 elite Gossypium hirsutum cultivar accessions collected from around the world, and especially from China. Illumina Cotton SNP 70K was used to obtain genome-wide single-nucleotide polymorphism (SNP) data for 149 experimental materials, and 18,432 highly consistent SNP loci were obtained by filtering. PCA (principal component analysis)indicated that 149 upland cotton materials could be divided into 2 subgroups, including subgroup 1 with 78 materials and subgroup 2 with 71 materials. Using the obtained SNP and other marker genotype test results, under salt stress, the salt tolerance traits 3d_Germination_potential, 3d_Bud_length_drop_rate, 7d_Germination_rate, 7d_Bud_length_drop_rate, 7d_Germination_weight, 3d_Bud_length, 7d_Bud_length, relative_germination_potential, Relative_germination_rate, 7d_Bud_weight_drop_rate, Salt tolerance index 3d_Germination_potential_index, 3d_Bud_length_index, 7d_Bud_length_index, 7d_Bud_weight_index, and 7d_Germination_rate_index were evaluated by genome association analysis. A total of 27 SNP markers closely related to salt tolerance traits and 15 SNP markers closely related to salt tolerance index were detected. At the SNP locus associated with the traits of the bud length decline rate at 7 days, alleles Gh_A01G0034 and Gh_D01G0028 related to plant salt tolerance were detected, and they are related to intracellular transport, membrane microtubule formation and actin network. This study provides a theoretical basis for the selection and breeding of salt-tolerant upland cotton varieties.

scholarly journals Evaluation of Salt Tolerance at Germination Stage in Cowpea [Vigna unguiculata (L.) Walp]

HortScience ◽  
2017 ◽  
Vol 52 (9) ◽  
pp. 1168-1176 ◽  
Author(s):  
Waltram Second Ravelombola ◽  
Ainong Shi ◽  
Yuejin Weng ◽  
John Clark ◽  
Dennis Motes ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Seed Germination ◽  
Salinity Stress ◽  
Germination Rate ◽  
Correlation Coefficients ◽  
Human Consumption ◽  
Tolerance Index ◽  
Salt Tolerant ◽  
Salt Tolerance Index ◽  
Germination Stage

Cowpea is a leguminous and versatile crop which provides nutritional food for human consumption. However, salinity unfavorably reduces cowpea seed germination, thus significantly decreasing cowpea production. Little has been done for evaluating and developing salt-tolerant cowpea genotypes at germination stage. The objectives of this research were to evaluate the response of cowpea genotypes to salinity stress through seed germination rate and to select salt-tolerant cowpea genotypes. The seed germination rates under nonsalt condition and salinity stress (150 mm NaCl) were evaluated in 151 cowpea genotypes. Four parameters, absolute decrease (AD), the inhibition index (II), the relative salt tolerance (RST), and the salt tolerance index (STI) were used to measure salt tolerance in cowpea. The results showed that there were significant differences among the 151 cowpea genotypes for all parameters (P values <0.0001). The AD in germination rate was 5.8% to 94.2%; the II varied from 7.7% to 100%; the RST ranged from 0 to 0.92; and STI varied from 0 to 0.92. A high broad sense heritability (H2) was observed for all four parameters. High correlation coefficients (r) were estimated among the four parameters. PI582422, 09–529, PI293584, and PI582570 were highly salt tolerant at germination stage. In addition, genotypes from the Caribbean and Southern Asia exhibited better tolerance to salinity, whereas those from Europe and North America were the most salt-susceptible.

scholarly journals Morpho-physiological Response of Gliricidia sepium to Seawater-induced Salt Stress

2019 ◽  
Vol 17 (1-2) ◽  
pp. 66-75
Author(s):  
MA Rahman ◽  
AK Das ◽  
SR Saha ◽  
MM Uddin ◽  
MM Rahman
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Saline Water ◽  
Soil Health ◽  
Gliricidia Sepium ◽  
Tolerance Index ◽  
Adaptive Mechanisms ◽  
Relative Water ◽  
Salt Tolerance Index ◽  
Insight Into

Soil degradation due to the contamination of excessive saline water has been threatening soil health vis a vis plant productivity worldwide. Gliricidia sepium, a fertilizer tree, has come into limelight in recent decades in Bangladesh due to its potency in improving soil fertility. However, study on its suitability in coastal areas alongside identifying the salt-endurance limit is still lacking. Therefore, morpho-physiological attributes of G. sepium under seawater-induced different levels of salt stress were analyzed in a pot experiment from March to May 2018 to gain an insight into its salt-adaptive mechanisms. Results revealed that seawater-induced salinity negatively affected the growth-related attributes, such as plant height, fresh weight of shoots, dry weights of shoots and roots, and leaf area. The reduction of growth was coincided with reductions in photosynthetic pigments and relative water content. Interestingly, salt tolerance index was not decreased in parallel with increasing dosages of seawater, indicating the salt tolerance capacity of G. sepium. Furthermore, enhanced accumulation of proline increased the osmoprotective capacity of G. sepium in order to overcome the salt-induced osmotic stress. The results of the present study concluded that G. sepium might be suitable for growing in the salt prone areas ranging 20 – 40 dSm-1. The Agriculturists 2019; 17(1-2) 66-75

scholarly journals Overexpression of Tamarix hispida ThTrx5 Confers Salt Tolerance to Arabidopsis by Activating Stress Response Signals

2020 ◽  
Vol 21 (3) ◽  
pp. 1165
Author(s):  
Jiayu Luan ◽  
Jingxiang Dong ◽  
Xin Song ◽  
Jing Jiang ◽  
Huiyu Li
Keyword(s):  
Salt Stress ◽  
Stress Response ◽  
Salt Tolerance ◽  
Germination Rate ◽  
Nacl Stress ◽  
Tamarix Hispida ◽  
Resistant Varieties ◽  
Transcriptome Comparison ◽  
Plant Salt Tolerance ◽  
Cellular Water

Salt stress inhibits normal plant growth and development by disrupting cellular water absorption and metabolism. Therefore, understanding plant salt tolerance mechanisms should provide a theoretical basis for developing salt-resistant varieties. Here, we cloned ThTrx5 from Tamarix hispida, a salt-resistant woody shrub, and generated ThTrx5-overexpressing transgenic Arabidopsis thaliana lines. Under NaCl stress, the germination rate of overexpressing ThTrx5 lines was significantly increased relative to that of the nontransgenic line; under salt stress, superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and glutathione levels and root length and fresh weight values of transgenic ThTrx5 plants were significantly greater than corresponding values for wild-type plants. Moreover, with regard to the transcriptome, comparison of differential gene expression of transgenic versus nontransgenic lines at 0 h and 3 h of salt stress exposure revealed 500 and 194 differentially expressed genes (DEGs), respectively, that were mainly functionally linked to catalytic activity and binding process. Pull-down experiments showed that ThTrx bound 2-Cys peroxiredoxin BAS1-like protein that influences stress response-associated redox, hormone signal transduction, and transcription factor functions. Therefore, this work provides important insights into ThTrx5 mechanisms that promote salt tolerance in plants.

Physiological response of chickpea (Cicer arietinum L.) at early seedling stage under salt stress conditions

2019 ◽  
Author(s):  
Anita Mann ◽  
Gurpreet Kaur ◽  
Ashwani Kumar ◽  
Satish Kumar Sanwal ◽  
Jogendra Singh ◽  
...  
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Seedling Growth ◽  
Root Length ◽  
Dry Weight ◽  
Shoot Length ◽  
Seedling Stage ◽  
Tolerance Index ◽  
Early Seedling Growth ◽  
Early Seedling

Screening of chickpea lines for salt tolerance through seed germination and early seedling growth is crucial for their evaluation. Seeds of 30 chickpea genotypes were germinated on a sand bed irrigated with saline (3, 6, 9, 12 dS/m) and control solutions upto 30 days. At the early seedling stage (25-30 days), germination percentage, chlorophyll content, proline, root length, shoot length and seedling dry weight were found to be affected due to salinity. Salt tolerance index (STI) for plant biomass maintained a significant correlation with chlorophyll, proline, shoot length, and root length, which indicated that these parameters could be used as selection criteria for screening chickpea genotypes against salt stress. Significant differences in shoot length, root length, and seedling dry weight in 30-day-old seedlings were observed among selected chickpea genotypes as well. From the overall observation of germination characterstics and early seedling growth, it is concluded that the chickpea genotypes, HC-1, HC-5, ICC 867, ICC 5003, H-10-41 showed better salt tolerance as compared to the available salt tolerant check variety.

Comparative studies on salt tolerance of seedlings for one cultivar of puccinellia (Puccinellia ciliata) and two cultivars of tall wheatgrass (Thinopyrum ponticum)

2005 ◽  
Vol 45 (4) ◽  
pp. 391 ◽  
Author(s):  
B. Zhang ◽  
B. C. Jacobs ◽  
M. O'Donnell ◽  
J. Guo
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Seed Germination ◽  
Germination Rate ◽  
Seedling Emergence ◽  
Salt Tolerant ◽  
Mineral Contents ◽  
Shoot Height ◽  
Thinopyrum Ponticum ◽  
Tall Wheatgrass

Salt tolerances of 3 cultivars, Menemen puccinellia (Puccinellia ciliata Bor), Tyrrell and Dundas [tall wheatgrass, Thinopyrum ponticum (Podp.) Z. W. Liu and R. R. C. Wang], were compared with respect to their seed germination, adaptive responses to salt and waterlogging, seedling emergence, plant growth, shoot osmolality and mineral contents in a series of salt-stress experiments. An inverse normal distribution provided good fits for the time to seed germination. Under NaCl stress, 50% of the control (distilled water) seed germination rates of Menemen, Tyrrell and Dundas were achieved in 178.8, 300.9 and 296.8 mmol/L NaCl, respectively. Fifty percent of the control seedling emergence rates of these 3 cultivars were in 92.7, 107.2 and 113.5 mmol/L NaCl, respectively. The seed germination rates of these 3 cultivars under both salt and waterlogging stress were far lower than those germinated only under salt stress at the same salt level. Seed pretreatment by soaking seed in NaCl solutions greatly increased the seed germination rate under salt stress for Menemen and under both salt stress and waterlogging for Dundas. Tyrrell and Dundas were very similar in their tolerance to salt stress, and were significantly (P<0.05) more salt tolerant than Menemen in terms of seed germination and seedling emergence rate. Both shoot height and dry matter of these 3 cultivars were not statistically different among all salt stress levels during the seedling elongation period, indicating that the established plants of these 3 cultivars were very salt tolerant. The salt tolerance mechanisms of these 3 cultivars are possibly related to their abilities to maintain high osmolality in shoots by regulating high sodium and potassium contents, and reducing calcium deficiency under salt stress.

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