Mahshid Souri; MIna Bayat; Saeedeh Nateghi
Articles in Press, Accepted Manuscript, Available Online from 11 May 2025
Abstract
Background and objectives:
Poor establishment of seeds, especially in arid and semi-arid areas, reduces the performance of rangeland plants, increasing the speed of germination and establishment of seedlings can cause them to absorb water and nutrients more quickly. The priming treatment shortens the ...
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Background and objectives:
Poor establishment of seeds, especially in arid and semi-arid areas, reduces the performance of rangeland plants, increasing the speed of germination and establishment of seedlings can cause them to absorb water and nutrients more quickly. The priming treatment shortens the planting time until greening, protects the seeds and greens uniformly, which ultimately leads to uniform establishment and improved yield in the product. The aim of this research is to introduce the most effective priming on germination, height, yield, root and stem weight of Astragalus squarrosus Bunge species.
Methodology:
In this research, the effect of hydropriming, osmopriming and hormone priming on factors of germination, height, yield, root and stem weight of Astragalus squarrosus Bunge was investigated. The seeds of three ecotypes of Yazd, Semnan and Kashan were primed separately under hydropriming (distilled water), hormone priming (gibberellic acid 500 ppm) and osmopriming polyethylene glycol 6000 at two levels (-0.4 and -0.8 MPa). The statistical analysis of experiment was carried out in SPSS software at the form of a factorial design by applying two factors (priming treatment and drought stress treatment) on the collected seeds of three populations from three regions, Astragalus squarrosus Bunge species in the greenhouse.
Results:
Examining the results showed the significance of the priming effect on the indices of germination percentage, yield, height, root and stem weight of Astragalus squarrosus Bunge 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. According to the results, the highest plant height (40 cm) and fodder yield (42 g/m2), germination percentage (38.7 percent), root weight (37 g) and stem weight (42.8 g) in ecotype Yazd using hydropriming treatment and under drought stress has reached 75% of the farm capacity, the second place was observed in osmopriming (polyethylene glycol) treatment. The results of this research showed that the best performance and result for planting Astragalus squarrosus Bunge in the direction of reviving degraded dry rangelands is hydropriming (distilled water) along with seed scraping.
Conclusion:
Based on the results obtained from this research and also, considering the fact that hydropriming is much cheaper and simpler than osmopriming and hormone priming, therefore, hydropriming is introduced as a treatment to improve the performance of nether species. This issue can be taken into the attention of rangeland operators and experts in improving the function and performance of this type of valuable local fodder.
Jamal Hasani
Volume 11, Issue 4 , September 2019, , Pages 365-382
Taghi Mirhaji; Morteza Akbarzadeh
Volume 10, Issue 2 , September 2019, , Pages 193-214
Mojtaba Pakparvar; Yousefali Saadat
Volume 10, Issue 3 , September 2019, , Pages 357-379
Moharam Ashrafzadeh; Hamid Niknahad; Mohammadjamal Saharkhiz; Majid ghorbani Nohouji; Gholamali Heshmati
Volume 26, Issue 3 , September 2019, , Pages 629-639
Abstract
Clematis ispahanica Boiss is a rare species of Ranunculaceae family, which has forage and medicinal value. The seeds of this species have a very low germination percentage because of dormancy. Therefore, increasing their germination percentage by laboratory methods can be effective in restoring this ...
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Clematis ispahanica Boiss is a rare species of Ranunculaceae family, which has forage and medicinal value. The seeds of this species have a very low germination percentage because of dormancy. Therefore, increasing their germination percentage by laboratory methods can be effective in restoring this plant. In the present study, considering the seed size of C. ispahanica , H2SO4 (96% ) for 5 , 10, 20 seconds , hot water (70 and 90 °C .) for 15 minutes, ethanol (96%) for 48hours, HCL ( for 2, 4 and 6 minutes), KNO3 (0.2%) for 48 hours, NaCl (50 milli molar) for 48hours, and scarification using sandpaper were tested to break the seed dormancy. Moreover, the seeds of this species were planted in different depths (1, 1.5 and 2.5 cm) and densities (30, 50 and 70 seeds per square meter). Data analysis was performed using SPSS software version 18 and by univariate analysis of variance and the Duncan test. According to the results, the most effective treatments to improve germination percentage and rate were KNO3, NaCl and scarification treatments. The depth of planting had a significant effect (P<0.05) on the germination percentage, but the density of planting had no significant effect on the germination percentage (P> 0.05). Due to the lack of use of chemicals in scarification using sandpaper treatment, it has an advantage over other effective treatments, recommended to break seed dormancy and increase its germination percentage. Considering the weight of a thousand seeds (3.73gr), 1.12 kg/ha seed (equivalent to 30 seeds per square meter) in the depth of 1.5 cm is proposed for the planting of this species in the study area.
Naser Ansari; Mehdi Zohdi
Volume 11, Issue 3 , August 2019, , Pages 309-322
Reza Bagheri; Ali Ariapour
Volume 25, Issue 4 , February 2019, , Pages 713-722
Abstract
This study aimed to determine the best time of seed collection for Artemisia sieberi and Artemisia aucheri in Saleh abad rangelands of Baft County, Kerman province. After selecting a key area, the time of seed collection started from mid-November to end of January for Artemisia aucheri ...
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This study aimed to determine the best time of seed collection for Artemisia sieberi and Artemisia aucheri in Saleh abad rangelands of Baft County, Kerman province. After selecting a key area, the time of seed collection started from mid-November to end of January for Artemisia aucheri and from mid-October to mid-December for Artemisia sieberi. The seeds were evaluated for germination traits including germination percentage, germination rate, root length, shoot length, and vigor index. The data were analyzed, and the Duncan test was used to compare the mean values of treatments. The results showed that the delay in the time of seed collection of Artemisia sieberi from mid November to mid December caused an increased germination percentage, germination rate, seed vigor, and seedling length as 115, 119, 222, and 49%, respectively. The seeds of Artemisia aucheri collected in the first half of December compared to the first half of November increased seed vigor index, germination percentage, germination rate, and seedling length as 588, 336, 736, and 61%, respectively. Our finding showed that the delay in the time of seed collection in both of these species improved seed germination traits and seedling growth.
Roja Safaian; Hosein Azarnivand
Volume 17, Issue 2 , September 2010, , Pages 331-339
Abstract
Prangos ferulacea (L.) Lindly as one of the best Iran`s range plants, is the dominant species of Iranian Jashirzar. Competitive harvesting, lack of attention to vegetative conditions and their habitats caused a disturbance on its reproduction and also the degradation of its habitats. Since the regeneration ...
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Prangos ferulacea (L.) Lindly as one of the best Iran`s range plants, is the dominant species of Iranian Jashirzar. Competitive harvesting, lack of attention to vegetative conditions and their habitats caused a disturbance on its reproduction and also the degradation of its habitats. Since the regeneration of the plant is only done in the natural habitats and through its seeds _when having in mind its deep dormancy as a member of umbelliferae family, it seems necessary to study and investigate the methods of breaking the seeds dormancy in order to protect the species . In this research in order to determine the best methods of the breakage of the seeds dormancy, the effect of some factors such as darkness, lightening, coldness, washing and temperature on the breakage of the dormancy of Prangos seeds_ collected from Fars Province pastures _is analyzed. For this purpose, a completely randomized design with three replications and five treatments was done. The results showed that treatments of coldness, lightening and 10°C temperature in compare to other treatments have significantly influenced the breakage of the species' seed dormancy. Meanwhile these methods are more important when we remind that, they are more economical and safe for the embryo in compare to other treatments such as using chemicals (specially acids). All of these together make these treatments practical methods.
Hamid reza Naseri; Hosein Azarnivand; Mahdi Ghorbani; Zahra Mehrabanfar
Volume 15, Issue 1 , January 2008, , Pages 59-68
Abstract
This research was done in order to investigate the seed age effects (longevity) on germination of some sagebrush of species. East Azerbaijan was chosen as the collection sites and seeds of four species such as Artemisia fragrans, A. spicigera, A. campestris and A. vulgaris were collected from these sites. ...
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This research was done in order to investigate the seed age effects (longevity) on germination of some sagebrush of species. East Azerbaijan was chosen as the collection sites and seeds of four species such as Artemisia fragrans, A. spicigera, A. campestris and A. vulgaris were collected from these sites. Seed germination of these species was tested in the spring of the three following years and the data analyzed statistically. Results showed that seed ages have positive effects on the viability and germination of all species under study.. Minimum and maximum changes in seed germination belonged to Artemisia vulgaris and Artemisia spicigera respectively.