Aqil Khajadad, Mina (2021) The effect of humic substances and plant growth stimulating bacteria on the germination indices of two types of medicinal plant seeds. Masters thesis, University of Zabol.
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The effect of humic substances and plant growth stimulating bacteria on the germination indices of two types of medicinal plant seeds.pdf Download (400kB) |
Abstract
A factorial experiment in the form of a completely randomized design was carried out in-vitro conditions with four replications and, in total, 72 experimental units (36 experimental units for each type of seed) to investigate the effect of humic acid, fulvic acid and plant-growth-promoting-rhizobacteria treatments on the germination indices of medicinal plant seeds. The first factor was humic substances in three levels include distilled water (control), application of fulvic acid and humic acid and the second factor was plant-growth-promoting-rhizobacteria in three levels include physiological serum (control), the use of Pseudomonas sp. R27N7 and Staphylococcus sp. R38N2 plant-growth-promoting-rhizobacteria. The results showed a significant mutual effect of humic materials x bacteria on all measured traits for Sesbania plant. For this plant, fulvic acid treatment was the best treatment compared to the control in terms of improving all the measured traits (including 4 growth traits and 8 germination indices of Sesbania seeds). In addition, compared to the control, the combination treatment of fulvic acid and Pseudomonas bacteria, the treatment of staphylococcus bacteria alone, the combination treatment of humic acid and staphylococcus bacteria, and the combination treatment of fulvic acid and Staphylococcus bacteria were ranked respectively. For artichoke plants, the main effect of bacteria was significant only on the mean germination time trait. The main effect of humic substances was also significant on seedling weight, germination percentage, germination rate, mean daily germination and vigor index I and II. For this plant, humic acid treatment was the best treatment compared to the control in terms of improving seedling weight, germination percentage, germination rate, mean daily germination, vigor index I and II. Of course, in addition to humic acid, fulvic acid also significantly increased the rate of seed germination compared to the control. Also, each of the treatments of Pseudomonas and Staphylococcus bacteria significantly reduced the mean germination time compared to the control. Overall, it can be said that the use of fulvic acid treatment in Sesbania plant and humic acid treatment in artichoke plant improves most of the seed germination indicies and their growth indicies.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Staphylococcus, fulvic acid, humic acid, Sesbania, Pseudomonas, artichoke |
| Subjects: | S Agriculture > S Agriculture (General) |
| Depositing User: | Mrs najmeh khajeh |
| Date Deposited: | 15 Jan 2025 06:22 |
| Last Modified: | 15 Jan 2025 06:22 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/3763 |
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