Majid Dashti; Amrali Shahmoradi; Hamed Zarif ketabi; Asghar Paryab; GHolamreza Hosseini-Bamrood; Sadegheh Zarekia
Volume 16, Issue 3 , December 2009, , Pages 401-408
Abstract
Salsola orientalis S .G.Gmelin is a perennial plant species of chenopodiaceae family. Because of its palatability, as a range plant, and recent drought it has been overgrazed in a way that it was eliminated in some areas, or only the individual plants of this species could be found. This research was ...
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Salsola orientalis S .G.Gmelin is a perennial plant species of chenopodiaceae family. Because of its palatability, as a range plant, and recent drought it has been overgrazed in a way that it was eliminated in some areas, or only the individual plants of this species could be found. This research was conducted to map the habitats of the plant in Khorasan region and investigate on its habitat characteristics (topographic, climatic, edaphic), phenology, regeneration, root system, density, and canopy cover. Results showed that elevation range for the habitats of this plant is 500-1500 meters above sea level. It could be found on different aspects and slopes of 5-40 percent. Annual precipitation and temperature are 150-400 mm and 10-17.5 degree centigrade, respectively. In most of its habitats, in Khorasan region, this plant is accompanied with dominant species of Artemisia diffusa, Artemisia sieberi, Poa bulbosa and some other species of genus Salsola. This range plant grows on moderately deep to deep soils with sandy loam to silty loam texture, acidities of about 7.4-7.8, and EC of 0.8-7.2 ds/m. It has a tap root system. So many small branch roots are connected to the main root. The root system can infiltrate into the soil to a depth of 1.5 meters. Phenology stages for Salsola orientalis showed that vegetative growth is from early March until early June. Flowering starts in late May. Seed ripening is in late October until mid November. Seed dissemination happens in late November until early December. Plant regeneration is via seeds. At phenological stage of seed formation, chemical analysis of forge portion resulted in 13.4% protein, 18.28% ashes, 2.62% calcium, and 26.19% fiber.
Mostafa saeedfar; Mohammad taghi Feyzi; Amr ali Shahmoradi
Volume 13, Issue 2 , February 2006, , Pages 116-126
Abstract
To manage renewable natural resources is impossible, without attention to its ecological characteristic. Therefore study of rangeland species autecology is very importance. In this research, the autecology of Salsola orientalis S.G.Gamelin was studied from 1997 to 1999 in Isfahan province (Mouthe). Thus ...
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To manage renewable natural resources is impossible, without attention to its ecological characteristic. Therefore study of rangeland species autecology is very importance. In this research, the autecology of Salsola orientalis S.G.Gamelin was studied from 1997 to 1999 in Isfahan province (Mouthe). Thus several factors as, geographical distribution, botanical characteristics, phenology, reproduction, seed rate, root system, chemical composition, nutrient value, forage production, disease, climate and its effects on this species were surveyed. This species has wide geographic distribution in the arid land of the world and appear in different vegetation types, also it is dominant in some of the sites in steppe region. This specimen has wide range of altitude from 1000 – 2000 m in Iran and 800 – 2000 m. in Esfahan province. This species is a shrub with 30 – 100 cm. high and in certain regions maybe reach to 1.5 m. Its phenological phenomens occur during long time and is different in different years. Chemical composition showed high protein (% 12), total digestible nutrient (TDN) 62%. Forage production is different according in ecological condition. Salsola orientalis was found in different soils (with different structure and texture) and geologic formation. It is resistant to pests and disease and heavy grazing. This species appears in regions up to 150 mm precipitation and with absolute maximum and minimum temperature, respectively +40 and -20 degree centigrade. For escaping from unsuitable condition it removes it's foliage and modifying growth period length and by this method resistant to aridity