Document Details
|
Document Type |
: |
Thesis |
|
Document Title |
: |
Effect of zinc oxide nanoparticles on Vigna unguiculata and Abelmoschus esculentus plants grown under salt stress تأثير جسيمات اكسيد الزنك متناهية الصغر على نباتي اللوبيا والبامية النامية تحت الاجهاد الملحي |
|
Subject |
: |
Faculty of Science |
|
Document Language |
: |
Arabic |
|
Abstract |
: |
The present study aimed to evaluate the potential role of the applications of the nanoparticles of zinc oxide (ZnO NPs) which were prepared by green synthesis to alleviate the inhibition influence of salinity stress on two crops Vigna unguiculata and Abelmoschus esculentus, and compared their role with the application of bulk form of zinc oxide (bulk ZnO). The present experiments were conducted in the lab and greenhouse at Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia. The experiment consisted of six concentrations (0, 10, 25, 50, 75 and 100%) of seawater (SW) in the presence or absence of (10 mg/l) from (bulk ZnO) or (ZnO NPs). The first experiment was to determine the germination percentage of seeds of the experimental plants in Petri dishes after 48 hours, and the plumule and radicle lengths after 7 days. The second was pots experiment to determine the shoot and root lengths, shoot and roots fresh and dry weights after (20, 40 and 60 days) from sowing. As well as, after (60 days), determined leaf area, relative growth rate (RGR), the contents of photosynthetic pigments (chlorophyll a and b, total chlorophyll, carotenoids and total pigments), protein, proline, total soluble sugar, activity of antioxidant enzymes (SOD) and (CAT), and accumulation of some minerals. Then, after 70 days observed pods lengths, fresh and dry weights. Seawater treatments significantly and high significantly decreased most of the germination and growth parameters, the contents of photosynthetic pigments and protein, and contents of (N, P, K, Mg, Ca, S, Zn, Mn, Mo, B, Fe and Cu), but both ZnO applications enhanced these parameters. While Seawater concentrations (0 to 100 %) increased the contents of proline, total soluble sugar, Na and Cl, but these contents reduced with (bulk ZnO) treatment and decreased more with (ZnO NPs) treatment in both plants. Salinity led to an increase in the activity of (SOD) and (CAT). (Bulk ZnO) and (ZnO NPs) enhanced the activities of both antioxidant enzymes, the highest activity was in the plants treated with (ZnO NPs). Pods only appeared in V.unguiculata plants. Seawater treatments decreased the lengths, fresh and dry weights of pods, while both applications of (ZnO) increased pods parameters. The nanoparticles of (ZnO) environmentally friendly, cheap cost, and can be considered as a promising application to alleviate the effects of salt stress on plants. |
|
Supervisor |
: |
Prof.Dr. Hassan Saeed Al-Zahrani |
|
Thesis Type |
: |
Doctorate Thesis |
|
Publishing Year |
: |
1442 AH
2021 AD |
|
Added Date |
: |
Wednesday, May 26, 2021 |
|
Researchers
| ناديه محمد العبدالله | Alabdallah, Nadiyah Mohammed | Researcher | Doctorate | |
|
Back To Researches Page
|