Seed Priming with Pyroligneous Acid Mitigates Aluminum Stress, and Promotes Tomato Seed Germination and Seedling Growth

2021 ◽  
Author(s):  
Raphael Ofoe ◽  
Lokanadha Rao Gunupuru ◽  
Bourlaye Fofana ◽  
Gefu Wang-Pruski ◽  
Raymond H. Thomas ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Seed Priming ◽  
Aluminum Stress ◽  
Tomato Seed ◽  
Pyroligneous Acid

scholarly journals Seed priming with salicylic acid potentiates water restriction-induced effects in tomato seed germination and early seedling growth

2020 ◽  
Vol 42 ◽  
Author(s):  
Yutcelia Carolina Galviz-Fajardo ◽  
Gabriel Streck Bortolin ◽  
Sidnei Deuner ◽  
Luciano do Amarante ◽  
Fernanda Reolon ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Salicylic Acid ◽  
Seed Germination ◽  
Seedling Growth ◽  
Seed Priming ◽  
Water Restriction ◽  
Tomato Seed ◽  
Early Seedling Growth ◽  
Germination Speed ◽  
Early Seedling

Abstract: Seed priming with salicylic acid (SA) has been described as a method with potential to improve seed germination under unfavorable conditions. The present study aimed to evaluate the ability of seed priming with SA to attenuate the impact of water restriction during germination and early seedling growth of tomato. Seeds were subjected to different concentrations of SA (0, 25 and 50 µM) and sowed on substrates at different percentages of the water holding capacity (20, 30, 40 and 100%). The following variables were evaluated: germination, first count of germination, germination speed index, shoots/root length and dry mass, superoxide dismutase, ascorbate peroxidase and catalase activities, contents of hydrogen peroxide and of malondialdehyde. Water restriction significantly decreased the variables related to germination and seedling performance. Despite increasing germination speed and seedling development when combined with well-irrigated conditions, priming with SA negatively impacted those characteristics under water deficit conditions. That was through increases in superoxide dismutase activity and H2O2 accumulation. Thus, it was concluded that seed priming with SA does not improve tomato seed germination and early seedling growth under water deficit.

scholarly journals Seed Priming With an Animal-derived Protein Hydrolysate Improves Drought Tolerance of Tomato Seeds by Enhancing Reserve Mobilization, Osmotic Adjustment, and Antioxidant Mechanism

2021 ◽  
Author(s):  
Weixuan Wang ◽  
Chenglong Zhang ◽  
Wenlong Zheng ◽  
Haofeng Lv ◽  
Weiwei Zhou ◽  
...  
Keyword(s):  
Drought Stress ◽  
Seed Germination ◽  
Seedling Growth ◽  
Soluble Sugar ◽  
Seed Priming ◽  
Protein Hydrolysates ◽  
Tomato Seed ◽  
Reserve Mobilization ◽  
Tomato Seeds ◽  
Germination Traits

Abstract Purpose Protein hydrolysates obtained from agro-industrial byproducts have received much attentions due to their positive roles in regulating plant responses to environmental stresses. However, little is known about the roles of animal protein hydrolysates in mediating seed drought tolerance and the underlying mechanism. Here, the effects of seed priming with pig blood protein hydrolysates (PP) on tomato seed germination and seedling growth under drought stress were investigated. Methods Tomato seeds were soaked with different concentrations of PP solutions for 24 h, and then transferred to filter paper moistened with distilled water or 10% PEG-6000 solution in Petri dish. The germination traits, seeding growth, reserve mobilization, osmolytes, and antioxidant system were determined.Results PP priming effectively alleviated the reduction in seed germination traits, resulting in improved tomato seedling growth under drought stress. PP priming enhanced amylase and sucrose synthase activities, soluble sugar, soluble protein, and free amino acid levels, thereby promoting reserve mobilization in seeds. Moreover, PP priming also reduces osmotic toxicity by increasing the accumulation of proline, soluble protein, and soluble sugar. Drought stress substantially enhanced the production of ROS and subsequent increases in MDA and Evans blue uptake, which were significantly alleviated after PP priming by improving the activities of SOD, POD, and CAT, and non-enzymatic antioxidants. Conclusion PP priming is a feasible method for improving tomato seed germination and seedling growth under drought stress by enhancing reserve mobilization, osmolyte accumulation, and antioxidant systems.

scholarly journals The Effect of Hormone Seed Priming Using Gibberellic Acid on Seed Germination Characteristics and Seedling Growth of Coneflower (Echinacea purpurea)

2021 ◽  
Vol 8 (1) ◽  
pp. 173-188
Author(s):  
Farshid Yousefi ◽  
Abdolreza Sihampoosh ◽  
Abdolmahdi Bakhshandeh ◽  
Seyyed Amir Mousavi ◽  
◽  
...  
Keyword(s):  
Seed Germination ◽  
Gibberellic Acid ◽  
Seedling Growth ◽  
Seed Priming ◽  
Echinacea Purpurea ◽  
Germination Characteristics

Response of seed priming on seed germination and seedling growth in basil

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
A Mirzaei ◽  
R Naseri ◽  
S Vazan
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Seed Priming

scholarly journals Priming of Solanum melongena L. Seeds Enhances Germination, Alters Antioxidant Enzymes, Modulates ROS, and Improves Early Seedling Growth: Indicating Aqueous Garlic Extract as Seed-Priming Bio-Stimulant for Eggplant Production

2019 ◽  
Vol 9 (11) ◽  
pp. 2203 ◽  
Author(s):  
Muhammad Ali ◽  
Sikandar Hayat ◽  
Husain Ahmad ◽  
Muhammad Imran Ghani ◽  
Bakht Amin ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Antioxidant Enzymes ◽  
Seed Germination ◽  
Seedling Growth ◽  
Seed Priming ◽  
Oxygen Species ◽  
Enzymes Activities ◽  
Early Seedling Growth ◽  
Early Seedling ◽  
Antioxidant Enzymes Activities

The current study was aimed to evaluate the seed priming potential of AGE (aqueous garlic extracts) to enhance seed germination and early seedling growth of eggplant. Different concentrations (100, 200, and 300 µg mL−1) of AGE were evaluated along with methyl jasmonate (MeJA) and salicylic acid (SA), plant growth regulators with reported seed priming potential whereas, water was taken as a control treatment. Eggplant seeds were primed for 4-, 8-, and 12-h and seed germination traits such germination rate index, germination percentage, mean germination time, and early seedling growth traits such as fresh and dry weights, root, and shoot lengths were observed. Moreover, plant antioxidant enzymes activities and lipid peroxidation levels, soluble protein contents and reactive oxygen species were monitored to establish the stimulatory/inhibitory effects of the treatments. Our results indicate priming potential of AGE, SA, and MeJA to enhance seed germination and early seedling growth in eggplant and the effects were obvious in various morphological and physiological traits. Seed priming significantly altered the antioxidant enzymes activities such as superoxide dismutase (SOD), and peroxidase (POD) with alteration in the reactive oxygen species (ROS). Interestingly, priming duration also affected the bioactivity of these chemicals because seed priming with 300 µg mL−1 AGE for 4 h had a positive influence, however, prolonged exposure to the same concentration inhibited the seed germination process and induced oxidative stress on the seedlings with elevated levels of malondialdehyde (MDA) content. We propose AGE seed priming as a bio-stimulant to enhance seed germination and early seedling growth in eggplant, and the results hence lay the foundation for the preparation of garlic-based compounds to improve vegetables production under plastic tunnels and greenhouse production units.

scholarly journals Role of Trichoderma aggressivum f. europaeum as Plant-Growth Promoter in Horticulture

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1004 ◽  
Author(s):  
Brenda Sánchez-Montesinos ◽  
Fernando Diánez ◽  
Alejandro Moreno-Gavíra ◽  
Francisco J. Gea ◽  
Mila Santos
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Added Value ◽  
Growth Promoter ◽  
Tomato Seed ◽  
Promoting Effect ◽  
Commercial Plant ◽  
Plant Nursery ◽  
Different Doses

The main objective of this study was to determine the capacity of Trichoderma aggressivum f. europaeum to promote pepper and tomato seedling growth compared to that of T. saturnisporum, a species recently characterised as a biostimulant. Consequently, in vitro seed germination and seedling growth tests were performed under commercial plant nursery conditions. Additionally, the effects of different doses and a mixture of both species on seedling growth under plant nursery and subsequently under greenhouse conditions were determined. Furthermore, mass production of spores was determined in different substrates, and their siderophore and indole acetic acid production and phosphate (P) solubilisation capacity were also determined. Direct application of Trichoderma aggressivum f. europaeum to seeds in vitro neither increases the percentage of pepper and tomato seed germination nor improves their vigour index. However, substrate irrigation using different doses under commercial plant nursery conditions increases the quality of tomato and pepper seedlings. Tomato roots increased by 66.66% at doses of 106 spores per plant. Applying T. aggressivum f. europaeum or T. saturnisporum under plant nursery conditions added value to seedlings because their growth-promoting effect is maintained under greenhouse conditions up to three months after transplantation. The combined application of the two species had no beneficial effect in relation to that of the control. The present study demonstrates the biostimulant capacity of T. aggressivum f. europaeum in pepper and tomato plants under commercial plant nursery and greenhouse conditions.

scholarly journals Responses of Seed Germination, Seedling Growth, and Seed Yield Traits to Seed Pretreatment in Maize (Zea maysL.)

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Yu Tian ◽  
Bo Guan ◽  
Daowei Zhou ◽  
Junbao Yu ◽  
Guangdi Li ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seed Yield ◽  
Seedling Growth ◽  
Germination Rate ◽  
Seed Priming ◽  
Grain Weight ◽  
Shoot Biomass ◽  
Control Group ◽  
Yield Traits ◽  
Seed Pretreatment

A series of seed priming experiments were conducted to test the effects of different pretreatment methods to seed germination, seedling growth, and seed yield traits in maize (Zea maysL.). Results indicated that the seeds primed by gibberellins (GA), NaCl, and polyethylene glycol (PEG) reagents showed a higher imbibitions rate compared to those primed with water. The final germination percentage and germination rate varied with different reagents significantly (P<0.05). The recommended prime reagents were GA at 10 mg/L, NaCl at 50 mM, and PEG at 15% on account of germination experiment. 15% PEG priming reagent increased shoot and root biomass of maize seedling. The shoot biomass of seedlings after presoaking the seeds with NaCl reagent was significantly higher than the seedlings without priming treatment. No significant differences of plant height, leaf number, and hundred-grain weight were observed between control group and priming treatments. Presoaking with water, NaCl (50 mM), or PEG (15%) significantly increased the hundred-grain weight of maize. Therefore, seed pretreatment is proved to be an effective technique to improve the germination performance, seedling growth, and seed yield of maize. However, when compared with the two methods, if immediate sowing is possible, presoaking is recommended to harvest better benefits compared to priming method.

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