Sofi, Azam (2016) Effect of Humic acid, Potassium and Anti Stress Fertilizers to Reduce Salt Stress in Two Species Medicago sativ and Trifolium alexandrium. Masters thesis, University of Zabol.
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Abstract
A total of 15.5% area (25 millions) in Iran are saline lands that have been abandoned lands as a result of salinity. One of the ways to use these lands for production is reducing salinity stress. The study was conducted to decrease the salinity stress for two species Trifolium alexandrium and Medicago sativa using humic acid, potassium and anti-stress fertilizers this research was done in laboratory of Cellular and Molecular Biology Research Center of University of Zabol in a factorial experiment in completely randomized design with four replications. The treatments were humic acid (9: 1000), potassium (3.5: 1000) and anti-stress fertilizer (1.2:1000). Four salinity levels (0, 0.75, 1.5,3 dS/m) were applied for T.alexandrium .and four levels (0, 2, 6, 12 dS/m) tested for M.sativa. That the treatments were applied to the seeds in petri dishes. Measured morphological characteristics were radical length and pedicallength, seedling dry and fresh weight and allometric coefficient (pedicallength/radical length) Germination indices were seed germination rate, germination percentage, mean germination time and seed vigor index Seeds were harvested after germination at the end of growing trail and, content of pigments (chlorophyll a,b, total chlorophyll) and carotenoids were measured. The results showed that there were significant differences among different treatments at different levels of salinity. Analysis of variance in M. sativa showed that fertilizer treatments had significant differences on photosynthetic pigments, quantitative characteristics, germination characteristics and seed vigor index Results of T. Alexandrium showed that fertilizer treatments had significant differences on photosynthesis pigments, quantitative characteristics, and germination characteristics and seed vigor index except germination percentage. The results showed that although the treatments in this study was effective on quantitative characteristics, photosynthesis pigments. Totally, the results of the study showed that however, tested treatments had significant effects on quantitative characteristics and seed germination of M. sativa and T.alexandrium, but their effects were different. Therefore, use of these fertilizers in salinity stress in salt sensitive plant scan be useful and effective.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Salinity Stress, Humicacid, Germination, Morphological characteristics |
| Subjects: | S Agriculture > SB Plant culture |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 07 Nov 2016 06:09 |
| Last Modified: | 07 Nov 2016 06:09 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/978 |
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