scholarly journals Effect of Hydro-priming and Salinity Stress on Germination Indices of Niger (Guizotia abyssinica Cass.)

2021 ◽  
Vol 69 (4) ◽  
pp. 511-518
Author(s):  
Afsaneh Badalzadeh ◽  
Abolrazagh Danesh Shahraki
Keyword(s):  
Salinity Stress ◽  
Guizotia Abyssinica ◽  
Germination Indices

scholarly journals Investigation of Seed Germination Indices and Anthocyanin Content of Niger (Guizotia abyssinica) Seedling under the Effect of Three Nanoparticles

2019 ◽  
Vol 5 (2) ◽  
pp. 73-89 ◽  
Author(s):  
Moazzameh Eskandarinasab ◽  
Mohammad Rafieiolhossaini ◽  
Parto Roshandel ◽  
Mahmoud Reza Tadayon ◽  
◽  
...  
Keyword(s):  
Seed Germination ◽  
Anthocyanin Content ◽  
Guizotia Abyssinica ◽  
Germination Indices

scholarly journals Germination response of grasspea (Lathyrus sativus L.) and arugula (Eruca sativa L.) to osmotic and salinity stresses

2015 ◽  
Vol 71 (1) ◽  
pp. 97-108 ◽  
Author(s):  
Hamid-Reza Fallahi ◽  
Golsoom Fadaeian ◽  
Marziyeh Gholami ◽  
Omolbanin Daneshkhah ◽  
Fatemeh Sadat Hosseini ◽  
...  
Keyword(s):  
Osmotic Stress ◽  
Salinity Stress ◽  
Germination Rate ◽  
Dry Weight ◽  
Germination Percentage ◽  
Control Treatment ◽  
Breeding Programs ◽  
Lathyrus Sativus L ◽  
Germination Indices ◽  
Different Levels

Abstract The use of genetic potential of forgotten plants such as grasspea and arugula is an appropriate strategy for increasing of plants tolerance to environmental stresses. Therefore, in this laboratory study the effects of different levels of osmotic (0, -2, -4, -6, -8, -10, -12 and -14 bar caused by PEG) and salinity (0, 50, 100, 150, 200, 250, 300 and 350 mmol induced by NaCl) stresses were evaluated on germination indices of grasspea and arugula in four separate experiments. Arugula showed a suitable tolerance to osmotic stress, so that its germination percentage and rate at treatment of -10 bar were similar to control. Arugula had 79% germination at osmotic level of -14 bar, but its germination rate at this level was 60% lower than control. In addition, its radicle length until -8 bar and radicle dry weight up to -14 bar were higher than control treatment. However, all levels of salinity stress particularly treatments of more than 100-150 mmol decreased the germination indices of arugula. Germination percentage of arugula in 150 and 200 mmol treatments was 22 and 56% lower than control treatment, respectively. Grasspea had partially suitable tolerance to osmotic stress until -6 bar, but then intensified the reducing trends of its germination indices and finally reached to zero at -14 bar treatment. Moreover, salinity stress especially treatments of higher than 100 mmol decreased all germination indices of grasspea. Overall, arugula was a more tolerant plant especially to osmotic stress; therefore this forgotten plant can be used in agronomic and breeding programs in areas affected by drought stress.

scholarly journals Sugar beet (Beta vulgaris L.) germination indices and physiological properties affected by priming and genotype under salinity stress

2021 ◽  
Vol 49 (3) ◽  
pp. 12063
Author(s):  
Ali SHOKOUHIAN ◽  
Heshmat OMIDI
Keyword(s):  
Sugar Beet ◽  
Chlorophyll A ◽  
Salinity Stress ◽  
Physiological Mechanism ◽  
Seed Priming ◽  
Germination Percentage ◽  
Control Treatment ◽  
Seedling Vigour ◽  
Vigour Index ◽  
Germination Indices

Seed priming has proved to be an effective method in imparting stress tolerance to plants using natural and/or synthetic compounds to treat the seeds before germination. The present study was designed to investigate the physiological mechanism of seed priming with ZnSO4 (osmopriming) and distilled water (hydropriming) on sugar beet genotypes (‘Shokofa’, ‘Sina’, ‘Paya’, ‘Turbata’, and ‘Aria’) germination indices, seedling growth parameters, and biochemical properties under salinity stress (0, 2, 5, and 12 dS/m NaCl). A significant reduction in germination percentage (33.23%), germination rate (77.2%), chlorophyll a, b, and total contents (43.9, 31.9, and 39.9%, respectively) while, a significant increase in radical, plumule, and seedling length (57.1, 44.4, and 51.2%, respectively), seedling vigour index (48.9%), superoxide dismutase activity (61.3%), proline (54.0%) and sugar (56.3%) contents were achieved at 12 dS/m NaCl in compared to the control treatment. Seed hydropriming and osmopriming caused significant improvements in photosynthetic pigments, antioxidant enzyme activity, and proline content reflected in high germination percentage and rate as well as seedling vigour index and reduced mean germination time under salinity. ‘Paya’ and ‘Aria’ genotypes had a superiority according to the germination percentage and seedling vigour index, respectively. The hydropriming of ‘Paya’ genotype resulted in the highest germination percentage (95%) under high level of salinity (12 dS/m) which 11.84% increase compared to the control treatment. Hydropriming of ‘Sina’ seeds showed the highest chlorophyll a and total, and carotenoids under non-stress conditions (22.89, 31.65, and 2116.6 µg/g FW). Also, hydropriming by increases chlorophyll b content led to the modulation of the negative effects of high salinity stress (12 dS/m). In conclusion, different seed priming treatments in sugar beet seeds improved the salinity tolerance by physiological characteristics nonetheless hydropriming was the most effective treatment to get higher germination indices in ‘Paya’ and ‘Aria’ genotypes.

scholarly journals Effect of nutri-priming on germination indices and physiological characteristics of stevia seedling under salinity stress

2017 ◽  
Vol 39 (4) ◽  
pp. 353-362 ◽  
Author(s):  
Mehdi Aghighi Shahverdi ◽  
Heshmat Omidi ◽  
Seyed Jalal Tabatabaei
Keyword(s):  
Salinity Stress ◽  
Seedling Growth ◽  
Germination Rate ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Proline Content ◽  
Physiological Characteristics ◽  
Antioxidant Enzyme Activities ◽  
Seedling Length ◽  
Germination Indices

Abstract: Poor germination and low seedling growth of stevia (Stevia rebuadiana Bertoni) are common problems in the cultivation of the plant. On the other hand, salinity is one of the abiotic environmental stresses that reduce the performance of the product. The objective in this study was to assess the effect of nutri-priming with selenium (Se), iron (Fe) and boron (B) on stevia seed germination indices and physiological characteristics in sodium chloride (NaCl) salinity condition (0, 30, 60 and 90 mM). Results indicated that the effect of salinity in nutri-priming were significant on germination percentage, germination rate, germination uniformity, germination value, seedling length, seedling vigor index, total chlorophyll, free proline content and enzymatic activity of catalase (CAT) and superoxide dismutase (SOD). Salinity stress decreased the percentage and rate of germination and seed vigor, however, nutri-priming reduces the adverse effects of salinity stress. Salinity also reduced the amount of chlorophyll content, in spite of all that this decrease was very low in terms of nutri-priming with Se, Se+Fe and Se+Fe+B in high salinity level (90 mM). Salinity stress increased proline content and antioxidant enzyme activities of CAT and SOD, that nutri-priming especially with the Se more increased. The finding of this study leads to the conclusion that nutri-priming with nutrients, especially Se and Fe increased the antioxidant capacity of the plant to improve germination and seedling growth of stevia under salinity stress.

scholarly journals Salt-Stress Induced Protein Pattern Related to Seed Germination Indices in Lemon Balm (Melissa officinalis L.)

2017 ◽  
Vol 9 (12) ◽  
pp. 74
Author(s):  
Roghayeh Dehghani ◽  
Daryush Talei ◽  
Tayebeh Radjabian ◽  
Azra Saboora
Keyword(s):  
Salt Stress ◽  
Seed Germination ◽  
Salinity Stress ◽  
Protein Pattern ◽  
Germination Rate ◽  
Block Design ◽  
Stress Factors ◽  
Protein Patterns ◽  
Salinity Levels ◽  
Germination Indices

Salinity is one of the major environmental stress factors that cause many adverse effects on growth and productivity of plants. The objective of the present study was to investigate the effects of salinity levels on seed germination indices and protein patterns in Melissa offcinalis seedlings. An experiment was carried out based on randomized complete block design with five concentrations of NaCl and four replicates with sand medium. The results indicated that salt stress had negative effects on the seed germination percentage (GP), mean germination time (MGT) and germination rate (GR), primary shoot and root length, as well as the protein content. After two days of salt exposure, the lowest (0%) GP was obtained for seeds treated with 12 dSm-1 salinity, as compared to the control (48.5%). Although, high salinity levels delayed seed germination, but during the experimental period GP increased and no significant differences were observed among the treatments in terms of GP after two weeks. The highest MGT (4.97 days) was obtained for plants stressed with 12 dSm-1 salinity level, as compared to the control (1.89 days). Analysis of the protein bands revealed that salinity suppressed the expression of two proteins with the size of 45 (Y1), and 40 kDa (Y2) and protein of 60 kDa (D1) was down-regulated. Also, the synthesis of four proteins of 70 (X1), 30 (X2), 25 (X3), and 20 kDa (X4) was induced in the seedlings under salinity stress. The changes in protein pattern under salinity stress indicated that the synthesis of new proteins may be associated to the stress specific proteins.

scholarly journals Effect of seed priming by potassium nitrate on germination and biochemical indices in Silybum marianum L. under salinity stress

2015 ◽  
Vol 9 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Abolfazl Masoumi Zavariyan ◽  
Mojtaba Yousefi Rad ◽  
Mohsen Asghari
Keyword(s):  
Salinity Stress ◽  
Peroxidase Activity ◽  
Life Sciences ◽  
Seed Priming ◽  
Potassium Nitrate ◽  
Silybum Marianum ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Biochemical Indices ◽  
Germination Indices

For investigation of the effect of seed priming by potassium nitrate on germination and biochemical indices of Silybum marianum L. under salinity stress, factorial experiment based on completely randomized design with two factor including different concentrations of potassium nitrate (0, 0.25 and 0.35 mM) and  calcium chloride (0, 150 and 250 mM) at three replicates was carried out. Results showed that salinity stress decrease the germination indices and amount of seedling protein and also increase the peroxidase activity. With using of 0.25 mM potassium nitrate germination indices were improved and peroxidase activity was reduced. Also, results showed that seed priming with 0.35 mM was not suitable. Therefore, seed priming with 0.25 mM potassium nitrate was improved seedling growth and germination indices under salinity stress.DOI: http://dx.doi.org/10.3126/ijls.v9i1.11922 International Journal of Life Sciences Vol.9(1) 2015 23-28

Seed dormancy and germination requirements in Angelica palustris (Besser) Hofm., a critically endangered plant

2018 ◽  
Vol 44 (4) ◽  
pp. 605-611
Author(s):  
Anca Manole ◽  
Cristian Banciu
Keyword(s):  
Endangered Plant ◽  
Seed Length ◽  
Maturation Period ◽  
Morphophysiological Dormancy ◽  
Whole Seed ◽  
Air Cavities ◽  
Germination Indices ◽  
Essential Oil Production ◽  
Germination Requirements ◽  
Seed Dormancy And Germination

The phenology of Angelica palustris seeds including maturation, germination requirements, and dormancy class, is still unknown. In opposite to the results reported from other species of Angelica, present findings showed that A. palustris produced seeds with embryo underdeveloped (the ratio between the embryo and the whole seed length was between 0.19 and 0.12) and physiologically dormant which corresponded to Morphophysiological Dormancy class. Dormancy breakdown requires a post maturation period (at least 30 days) at 18 - 20ºC for a complete embryo development, and also up to 30 days of cold stratification at 4°C. The best germination indices were obtained when fruit was removed. Germination energy (Ge) was achieved within 19 days after imbibition and was 25.8 + 0.03 and germination per cent (Gp) was achieved within 28 days and was 64.7 + 0.14. Fruit structure (lateral wings with air cavities) and physiology (essential oil production) are adaptations to facilitate seed dispersal and dormancy/germination balance.

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