Abstract
This study to evaluate the effects of silver nanoparticles on the salinity tolerance of (Satureja hortensis L.). The study done based on factorial experiment using a completely randomized design, in a laboratory and greenhouse in Islamic Azad University of Khoy, Iran in 2015. Silver nanoparticles concentrations were 0, 40, 60, and 80 ppm and salt concentrations 0, 30, 60, 90, and 120 mM l−1. Germination seeds of Satureja hortensis were counted twice a day for 14 days at laboratory. Then seedling transferred to the greenhouse and their growth continued. Traits measured were seedling weight, seedling lengths, germination rates, germination averages, germination potentials, and percentages of germination. Results showed that the silver nanoparticles improved significantly germination average; plants shoot length and increased plants resistance to salinity. Results showed that a significant reduction in germination percent and seedling growth due to the salinity stress while significantly increased with nano-particles application. In control treatment (without silver nanoparticle) and low level of salinity (0 mM l−1) increased seed germination percentage, while the high levels of salinity inhibited the seed germination significantly. The results showed that the effect of silver nanoparticles was significant on germination percentage in P ≤ 0.05. Overall, application of silver nanoparticles was beneficial in improving salinity tolerance in the S. hortensis seedling and its application may stimulate the differences defense mechanisms of plants against salt toxicity.
Highlights
Soil salinity is the most significant cause of abiotic stress that plants face, and it limits plant production throughout the world (Tarzi and Fahimi, 2005)
The highest stem length was observed in the plants treated with a concentration of 80 ppm of silver nanoparticles, and the lowest stem length was observed with the control (Table 2)
The longest stem length was observed in non-saline conditions, and the shortest stem was observed in a saline condition with a salinity of 120 mM lÀ1
Summary
Soil salinity is the most significant cause of abiotic stress that plants face, and it limits plant production throughout the world (Tarzi and Fahimi, 2005). Nanoparticles have more solubility, surface area and reactivity as compared to the bulk material They have gained promising position to ameliorate the harmful effects of abiotic and biotic stress to achieve the goal of sustainable agriculture globally. Because of their impact on stress tolerance and nutritional quality of crops, the research related to the application of nanoparticles is increasing. Different types of nanoparticles have been examined for their potential role in protection from biotic and abiotic stresses These nanoparticles were reported to overcome nutritional deficiencies, to increase enzymatic activities and help in adhesion of plant growth promoting bacteria to plant roots under abiotic stresses and in these diverse ways, improved the tolerance of crops to stresses.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
