Volume 19, Issue 2 (7-2025)
مرتع 2025, 19(2): 156-170 |
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Nateghi S, Bayat M, Souri M. Introduction of suitable priming of Astragalus kahircus seeds for improvement and rehabilitation of rangelands in Yazd province. مرتع 2025; 19 (2) :156-170
URL: http://rangelandsrm.ir/article-1-1280-en.html
URL: http://rangelandsrm.ir/article-1-1280-en.html
Research Institute of Forests and Rangelands
Abstract: (409 Views)
Astragalus sp are very important in terms of medicine, fodder and economy in Iran. Astragalus kahiricus species is one of the indigenous and adaptable species in the sands of Iran, which is very important in terms of tolerance to special ecological conditions as well as nutritional value and protection of the soil. Others go through the initial stages of vegetative growth and then dry up. One of the solutions to solve this problem that can help improve vegetative growth and better establishment of species in natural environments is seed priming. The priming treatment shortens the time of sowing until greening and protects the seeds from living and non-living factors in the critical stage of seedling establishment. The purpose of this research is to determine the effect of priming treatments on the growth and performance indicators of A. kahiricus species.
Methodology: In this research, the effect of hydropriming, osmopriming and hormone priming on the factors of height, percentage of cover, production, amount of proline and carbohydrate of Astragalus kahiricus was investigated. The seeds of three ecotypes of Saghand, Robat Pusht Badam and Robat Khan under different treatments including hydropriming (distilled water), hormone priming (gibberellic acid: 125 and 250 ppm, salicylic acid: 100 and 200 mg/l and ascorbic acid: 100 and 200 mM) and osmopriming (potassium nitrate: 0.4%) were primed separately. The experiment was conducted as a split plot based on a randomized complete block design with five replications.
Results: Examining the results showed that the priming effect was significant on the amount of carbohydrates, cover, production and height of Astragalus kahiriqus species at the error level of 1%. The investigated characteristics of the seeds that were exposed to different types of priming were significantly different from each other compared to the control seeds. Based on the results, the highest plant height (26 cm) and production (65 g/m2) were observed in Saghand population using gibberellic acid 250 (ppm) treatment. The highest amount of carbohydrate 34 (g/100g FW) corresponding to gibberellic acid 250 was obtained in the area of the ligament behind the almond and the highest amount of proline 3 (Mm/g FW) in the population of the ligament behind the almond was obtained corresponding to the ascorbic acid 100 and 200. The highest coverage percentage (27%) was reported in Saghand population with 250 ppm gibberellic acid treatment. The results of this research showed that the best yield and result for direct seeding of A. Kahiricus species and also for the restoration of destroyed dry pastures is prime gibberellic acid treatment of 250 ppm along with seed scraping.
Methodology: In this research, the effect of hydropriming, osmopriming and hormone priming on the factors of height, percentage of cover, production, amount of proline and carbohydrate of Astragalus kahiricus was investigated. The seeds of three ecotypes of Saghand, Robat Pusht Badam and Robat Khan under different treatments including hydropriming (distilled water), hormone priming (gibberellic acid: 125 and 250 ppm, salicylic acid: 100 and 200 mg/l and ascorbic acid: 100 and 200 mM) and osmopriming (potassium nitrate: 0.4%) were primed separately. The experiment was conducted as a split plot based on a randomized complete block design with five replications.
Results: Examining the results showed that the priming effect was significant on the amount of carbohydrates, cover, production and height of Astragalus kahiriqus species at the error level of 1%. The investigated characteristics of the seeds that were exposed to different types of priming were significantly different from each other compared to the control seeds. Based on the results, the highest plant height (26 cm) and production (65 g/m2) were observed in Saghand population using gibberellic acid 250 (ppm) treatment. The highest amount of carbohydrate 34 (g/100g FW) corresponding to gibberellic acid 250 was obtained in the area of the ligament behind the almond and the highest amount of proline 3 (Mm/g FW) in the population of the ligament behind the almond was obtained corresponding to the ascorbic acid 100 and 200. The highest coverage percentage (27%) was reported in Saghand population with 250 ppm gibberellic acid treatment. The results of this research showed that the best yield and result for direct seeding of A. Kahiricus species and also for the restoration of destroyed dry pastures is prime gibberellic acid treatment of 250 ppm along with seed scraping.
Type of Study: Research |
Subject:
Special
Received: 2024/08/3 | Accepted: 2025/05/4 | Published: 2025/07/1
Received: 2024/08/3 | Accepted: 2025/05/4 | Published: 2025/07/1
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