Document Details
|
Document Type |
: |
Thesis |
|
Document Title |
: |
Effect of seawater irrigation on germination and growth of blue tea (Clitoria ternatea) تأثير الري بمياه البحر على الإنبات والنمو للشاي الأزرق |
|
Subject |
: |
Faculty of Science |
|
Document Language |
: |
Arabic |
|
Abstract |
: |
Salinity is a major abiotic stress negatively affecting crop productivity and quality. Current study deals with the impact of irrigation with seawater during germination and seedling growth and to identify salinity tolerance in Clitoria ternatea L. that can be utilized for further physiological, chemical and genetic studies. A field experiment was carried out in a greenhouse at the Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia. During the year 2021. In order to examine the effects of irrigation of C. ternatea plant with different concentrations of seawater (SW). Split plot design experiment fitted in complete randomized plots with three replicates was used. The experiment consisted of six concentrations (0, 5, 10, 25, 50 and 100%) of SW, which were made by mixing seawater with freshwater, plus freshwater (control). The first experiment was to determine the germination percentage (GP) of seeds of the experimental plants in Petri dishes after 48 hours, and the Seed germination index (SGI) after 8 days. The second was pots experiment to determine the plant growth characteristics (shoot and root lengths, shoot and roots fresh and dry weights, leaf area, Water content (WC)), photosynthetic pigments (chlorophyll a and b, total chlorophyll, carotenoids), protein, amino acids, proline, total soluble sugar and accumulation of some minerals after (60 days) from sowing. The results indicated that seawater treatments significantly impact plants on all the above-mentioned measurements, particularly under 50 and 100 %. The germination of C. ternatea seeds was affected negatively by SW% treatments. The germination criteria represented as GP% and SGI were obviously gradually reduced. Leaf area, fresh weight, dry weight, shoot length, root length and water content reduced significantly at the highest salinity level when compared with the control. Also, the plant pigments content (Chl.a, Chl.b, Chl.a & b and carotenoids), and contents of (P, K, Mg, Ca and Fe) reduced at all levels of treatment as compared with the control whereas, SW% concentrations (0 to 100 %) increased the contents of amino acids, proline, total soluble sugar, protein and Na and Cl elements contents as compared to the control. Finally, the growth of C. ternatea seedlings was given the best results at the lowest seawater ratios. While greatly reduced by high salinity concentration, which indicates the sensitivity of this plant to high seawater salinity and can tolerate low and medium salinity.
Key words: Salinity stress, seawater, Clitoria ternatea, blue tea, abiotic stress |
|
Supervisor |
: |
Prof. Dr. Hassan S. Al-Zahrani |
|
Thesis Type |
: |
Master Thesis |
|
Publishing Year |
: |
1444 AH
2023 AD |
|
Added Date |
: |
Tuesday, March 7, 2023 |
|
Researchers
| خلود ناجي الشيخ | AL-SHAIKH, Kholoud NAJI | Researcher | Master | |
|
Back To Researches Page
|