|
Effect of foliar spraying of silver nanoparticles on growth and morpho-physiological traits of French Marigold (Tagetes patula L.) under salinity stress conditions
|
Khatoun Behzad   , Abdollah Ehtesham Nia * , Mohamadreza Raji , Hasan Moumivand , Majid Alikhani |
| Lorestan University |
|
|
Abstract: (780 Views) |
Salinity is one of the main environmental stresses that affect the establishment of seedlings and the performance of landscape plants. The application of silver nanoparticles in abiotic stresses in several ways improves the tolerance of plants against stresses. For this purpose, to investigate the effect of silver nanoparticles on the growth, and morpho-physiological traits of French Marigold under salinity stress, a factorial experiment was conducted under a completely randomized design with 4 replications. The first factor included salinity treatment at 4 levels (0, 25, 50 and 100 mM) and the second factor was the foliar application of silver nanoparticles at four levels (0, 10, 50, and 100 mg/L). In this study, the treatment of silver nanoparticles at 50 mg/L without salinity (0 mM) resulted in the maximum height of the plant (20 cm), the diameter of the stem (3.98 mm), the diameter of the flower (65 5.5 mm), the number of flowers per plant (11), the number of side branches (8), the relative water content (86.40%) and the lowest ion leakage (30.36%). Increasing the salinity level from 0 to 100 mM led to smaller plants with less pigment content and reduced growth traits. Weekly application of nanosilver not only significantly improved all evaluated parameters but also partially reduced the destructive effects under salinity conditions (50 and 100 mM). This gradual effect of nanosilver was more prominent when it was applied at a concentration of 50 mg/L, so that the foliar application of nanosilver increased the ornamental characteristics of Marigold, including the number of lateral branches (by 25.81%), the number of flowers (by 27.27%), flower diameter (by 10.27%) and fresh and dry weight of flowers (by 10.29 and 28.68%, respectively) under salinity stress conditions. Also, the present results showed that Marigold is sensitive to high salinity (100 mM) and is not able to produce large flowers under high salinity conditions. In general, the use of silver nanoparticles was useful in improving salinity tolerance in French Marigold and its application may stimulate the defense mechanisms of plants against salt toxicity. |
|
| Keywords: Marigold plant, Relative Water Content, Silver nanoparticles, Salinity stress |
|
|
Full-Text [PDF 799 kb]
(206 Downloads)
|
Type of Study: Research |
Subject:
Special
Received: 2023/01/6 | Accepted: 2024/01/1 | Published: 2024/09/21
|
|
|
|
|
|
|
| Send email to the article author |
|
|
|
| Add your comments about this article |
|
|
|
