فهرست مقالات Puccinellia distans

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  1 - Growth and Heavy Metals Uptake of Puccinellia distans (Jacq.) Parl
  Mahdiyeh Ebrahimi
  The use of plants to remediate contaminated soil has been the most rapidly developing component in environmental cleansing. Although total concentration of heavy metals in soil is used for regulatory review, it also is beneficial to assess the potential for ecosystem im چکیده کامل

  The use of plants to remediate contaminated soil has been the most rapidly developing component in environmental cleansing. Although total concentration of heavy metals in soil is used for regulatory review, it also is beneficial to assess the potential for ecosystem impact through a series of bioassays. One commonly used bioassay is seed germination. In current research study effect of contaminated soil with heavy metals (Pb, Zn, Cu, Fe) on germination and growth of Puccinellia distans were evaluated. Shoot and root concentrations of metals were also measured. Data obtained from the experiment indicated that the plant perform dose-dependent responses to the contaminated soils. Reduction in germination, root and shoot height and biomass were significantly (P<0.05) different when compared to the control. Analysis of tissue concentrations in the plant showed that heavy metals were mainly accumulated in the roots and also plant tissues demonstrated different affinity to take up heavy metals. In all the plant organs, the concentrations of heavy metals increased as the metals contents in the soil increased. [Ebrahimi. Seed Growth and Heavy Metals Uptake of Puccinellia distans (Jacq.) Parl. International Journal of Agricultural Science, Research and Technology, 2012; 2(2):83-88]. پرونده مقاله
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  2 - Determination of Suitable Lands for Sowing Alkaligrass Puccinellia distans (Case Study: Agh-Ghala Rangelands, Golestan Province, Iran)
  Hamid Niknahad Gharmakher Azadeh Mohammadi Gonbadi Chooghi Bairam Komaki Farhad Honardoust
  Annually, 200 ha of Agh Ghala rangelands in Golestan, Iran are under Alkaligrass Puccinella distans's cultivation but the failure in the identification of appropriate sites for seed sowing may result in high costs of cultivation. The current study aims to reduce such co چکیده کامل

  Annually, 200 ha of Agh Ghala rangelands in Golestan, Iran are under Alkaligrass Puccinella distans's cultivation but the failure in the identification of appropriate sites for seed sowing may result in high costs of cultivation. The current study aims to reduce such costs through the examination of apt sites to grow P. distans in northern rangelands of Agh Ghala Golestan, Iran. Because of the same topography and climate of the study area and Gomishan rangeland in closure where the plant grows and seeds are collected, a map of photomorphic units was first prepared using satellite images of Landsat 5 (28.05.2011) and Google Earth. Then, some soil physical and chemical properties including texture, EC, pH and organic matter were measured in three photomorphic units. In each photmorphic unit, three transects (length of 150 m and intervals of 50 m) were set up. Along each transect, three soil samples at the depth of 0–10 cm (9 samples in each photomorphic unit) were taken and transferred to the laboratory. In order to verify the suitability of the predicted photomorphic unit, the seeds had been sown in the above mentioned key area of each photomorphic unit and P. distans cover percent was estimated. Data were analyzed and means comparison was done between the units using Tukey method. Incorporating all the obtained data led to predict the location of appropriate photomorphic unit for the seed sowing of this plant. Despite the initial prediction of suitable seeding location (photomorphic unit 3), results indicated that the photomorphic unit 1 was the most successful area which had a lower depth of underground water table and higher EC and vegetation cover percent as compared to two other units. Based on the findings of current study, it is recommended that seeding operation should be concentrated on photomorphic unit 1. پرونده مقاله
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  3 - Study of the Morphometric Characteristics of Nebkhas and the Amount of Accumulated Sand in Nitraria schoberi Type in Mighan Playa Arak, Iran
  Hamid Toranjzar Azadeh Fathi Abbas Ahmadi
  Annually, 200 ha of Agh Ghala rangelands in Golestan, Iran are under Alkaligrass Puccinella distans''s cultivation but the failure in the identification of appropriate sites for seed sowing may result in high costs of cultivation. The current study aims to reduce such c چکیده کامل

  Annually, 200 ha of Agh Ghala rangelands in Golestan, Iran are under Alkaligrass Puccinella distans''s cultivation but the failure in the identification of appropriate sites for seed sowing may result in high costs of cultivation. The current study aims to reduce such costs through the examination of apt sites to grow P. distans in northern rangelands of Agh Ghala Golestan, Iran. Because of the same topography and climate of the study area and Gomishan rangeland in closure where the plant grows and seeds are collected, a map of photomorphic units was first prepared using satellite images of Landsat 5 (28.05.2011) and Google Earth. Then, some soil physical and chemical properties including texture, EC, pH and organic matter were measured in three photomorphic units. In each photmorphic unit, three transects (length of 150 m and intervals of 50 m) were set up. Along each transect, three soil samples at the depth of 0–10 cm (9 samples in each photomorphic unit) were taken and transferred to the laboratory. In order to verify the suitability of the predicted photomorphic unit, the seeds had been sown in the above mentioned key area of each photomorphic unit and P. distans cover percent was estimated. Data were analyzed and means comparison was done between the units using Tukey method. Incorporating all the obtained data led to predict the location of appropriate photomorphic unit for the seed sowing of this plant. Despite the initial prediction of suitable seeding location (photomorphic unit 3), results indicated that the photomorphic unit 1 was the most successful area which had a lower depth of underground water table and higher EC and vegetation cover percent as compared to two other units. Based on the findings of current study, it is recommended that seeding operation should be concentrated on photomorphic unit 1. پرونده مقاله