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Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Journal: 

PLANT AND ECOSYSTEM

Issue Info: 
  • Year: 

    2008
  • Volume: 

    4
  • Issue: 

    14
  • Pages: 

    2-11
Measures: 
  • Citations: 

    0
  • Views: 

    4085
  • Downloads: 

    0
Abstract: 

The Paulownia is a surprising tree among the fast growing tree species. It can produce wood material more than popular trees. Therefore it is suitable for wood culture programs. The species of Paulownia genus have high potential for wood production in growth normal condition. Special attention to plant fast growing tree species with short rotation harvest is very important in low capitation forest countries, therefore the compatibility of two Paulownia species in north of Iran.was studied In this study the seeds of P. fortunei and P. tomentosa were applied and then they were planted in Safrabasteh and Lashtnesha research stations. From each species 49 seedlings (one-year-old) were planted with 5*5 meters spacing. In the end of growth season we were measured some of growth parameters such as survival percent, diameter of breast height (dbh) and height. The results showed that in the first growth year dbh, height and survival percent were more than the third growth year. Unfortunately, because of hydromorphic soil, high level underground water table and sensitivity of Paulownia species to water logged phenomenon, this investigation was not successful. The survival percentage in the first and third of growth season for two species was 47.7%, 46.3% and 11%, 24% respectively.

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Journal: 

PLANT AND ECOSYSTEM

Issue Info: 
  • Year: 

    2008
  • Volume: 

    4
  • Issue: 

    14
  • Pages: 

    12-24
Measures: 
  • Citations: 

    1
  • Views: 

    816
  • Downloads: 

    0
Abstract: 

There are several habitats of Corylus avellana L. in north of Iran. To spread this species in southern slops of Alborz Mountain, hazel seeds from natural habitats were collected and planted in research centre of Alborz in Karaj.Both groups of individuals were compared to each other after seven years. This research was included morphological and enzymatic studies. In this paper, morphological results were showed.In morphological studies, characteristics such‎ as growth rate of shoot, number of stomata, hair percentage on leaf and catkin, leaf dimensions and vitality percentage were considered. Results were analyzed by T-test and 2×2 factorial. Findings showed that Makesh individuals planted in Karaj had bigger leaves and more growth rate. Therefore, these individuals may be introduced for planting.

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Journal: 

PLANT AND ECOSYSTEM

Issue Info: 
  • Year: 

    2008
  • Volume: 

    4
  • Issue: 

    14
  • Pages: 

    25-40
Measures: 
  • Citations: 

    0
  • Views: 

    1431
  • Downloads: 

    0
Abstract: 

It is necessary to pay attention to basic factors of life for Assessment of Habitat.The Important Habitat factors for reproduction stage of phasianus colchicus are: Grass and Shrub compression and the average high of them was measured by geometric mean.Thease factors eliminate main needs of phasianuse colchicus in reproduction season.In HEP method, we did five step and Habitat suitability index estimated by geometric mean.The highest of suitability index was 0/8 for part 3. upper average high (0.66) and grass and shrub Compression and safety in part 3 were caused to be suit habitat for phasianus Colchicus Finally A model to exhibit habitat suitability index phasianus colchicus was provided that is certainly a local model for Phasianus colchicus on Reproductive season in Tootestan habitat of Gilan province.

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Journal: 

PLANT AND ECOSYSTEM

Issue Info: 
  • Year: 

    2008
  • Volume: 

    4
  • Issue: 

    14
  • Pages: 

    41-51
Measures: 
  • Citations: 

    0
  • Views: 

    978
  • Downloads: 

    0
Abstract: 

Alkaline decoction liquid affects the long fiber of pinaceae, so that we can achieve the best formulation for producing the high quality paper dough by microscopic observing & investigating of the rate of damages on long fibers.There are 10 well known and fruitful species for producing the craft paper, in this study pinus nigra Arnold& pinus eldarica were chosen coincidentally.For preparing the chips of the two A/M samples the anatomic specifications of spring wood & summer woods, were considered, because the long fiber has the great part in anatomic field on this condition. The perecentage of lignin is also less than the amount in ending texture & the texture near the cuticle.Removing lignin is the main step in preparing paper dough process.‎So the most transparent & stable paper by improving this step can be achieved.

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Journal: 

PLANT AND ECOSYSTEM

Issue Info: 
  • Year: 

    2008
  • Volume: 

    4
  • Issue: 

    14
  • Pages: 

    52-63
Measures: 
  • Citations: 

    0
  • Views: 

    806
  • Downloads: 

    0
Abstract: 

In order to investigate the reaction of canola autumnal species to delayed cultivation, a research study was carried out in Karaj Research Institute of Modification and preparation of sapling and seed in 1385-86. The test was performed with factorial form of random complete block plan with three repetitions consistying of planting time in two levels (10 Mehr& 10 Aban) and numbers in five levels such as: Elite, Opera, SLM046, Orient and Okapi. Each land test consists of 6 lines with 4 meters length and 30 cm gaps. The space of plants is 5 cm that 2 side lines are margins.4 middle lines were contemplated for determination of phonologic plant stages and measurement of some properties such as: numbers of pods in plant, diameter of pods, numbers of pod in shrub, lengths of pod in shrub, number of seeds in pod shrub, weight of thousand seeds, yield of seed, percentage of oil in seed, yield of oil seed. It was observed that all testing properties were reduced in delayed cultivation except the percentage of oil in seed. Consequently, the yield of oil seed in delayed cultivation, that is economically important, showed a significantly reduction.

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Journal: 

PLANT AND ECOSYSTEM

Issue Info: 
  • Year: 

    2008
  • Volume: 

    4
  • Issue: 

    14
  • Pages: 

    64-76
Measures: 
  • Citations: 

    0
  • Views: 

    5285
  • Downloads: 

    0
Abstract: 

In order to determine the effects of Amino acid spraying (Prolin, Betaein and Triptophan) for increasing the water deficit tolerance in Pishtaz genotype of Wheat (Triticum aestivum) a field experiment was conducted using a split-plot in randomized complete block design in 2007-2008 growing season in three replications.The main plot consisted of irrigation at 3 levels and subplots consisted Amino acid concentration spraying at 3 levels (0, 3 and 6 per thousands).Results showed that the best yield was obtained from Full irrigation with 5341.2 Kg/ha that has no significant different effect with second treatment (No-irrigation on stem extension).These treatments have %38 increase yield in ratio to first treatment (No-irrigation on stem extension and heading) with 3301Kg/ha.The highest protein yield was obtained from second treatment (No-irrigation on stem extension and heading stages) and Full irrigation with 614.9Kg/ha, and first treatment with average 417.25 Kg/ha had lowest protein yield. The highest and lowest protein percentage achieved from the first treatment and Full irrigation with 12.64 and 11.48 percent respectively. The highest grain yield with average 5662Kg/ha was obtained from Amino acid spraying with 6 per thousands concentration, that had 42% increases yield in ratio to control treatment‎. In this study ‎the best results achieved from six irrigation (No-irrigation in stem extension) and Amino acid spraying with six per thousand concentration.

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Journal: 

PLANT AND ECOSYSTEM

Issue Info: 
  • Year: 

    2008
  • Volume: 

    4
  • Issue: 

    14
  • Pages: 

    77-86
Measures: 
  • Citations: 

    2
  • Views: 

    901
  • Downloads: 

    0
Abstract: 

Heavy metals are potentially toxic to human life and the environment.Metal toxicity depends on their chemical behavior in soils. Forthis reason, the uptake of lead, zinc and potential phytoremediation efficiency of safflower (Carthamus tinctorius L.) was evaluated in a pot experiment which was contaminated by different amounts of zinc and lead. The experiment was a completely randomized design with two levels of zinc (Zn1: 150 and Zn2: 300 mg/Kg soil) and three levels of lead (Pb1: 50, Pb2: 500 and Pb3: 1000 mg/Kg soil). The amount of equilibrated zinc and lead in treated soil after three wetting-drying sequences was determined and the removal of both lead and zinc by plant were evaluated. The safflower yield decreased with the increase in the levels of zinc and lead which showed phytotoxicity in plant. Increasing soil extractable zinc. The lead uptake by plant was decreased. Despite an increase in plant lead concentration, increase in different levels of lead in the soil caused a decrease in the total amount of accumulated lead in plant. The highest level of lead and zinc yield produced in this study was in Zn1Pb1: 1.283 and Zn2Pb1: 7.740 mg.

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Journal: 

PLANT AND ECOSYSTEM

Issue Info: 
  • Year: 

    2008
  • Volume: 

    4
  • Issue: 

    14
  • Pages: 

    87-100
Measures: 
  • Citations: 

    0
  • Views: 

    1384
  • Downloads: 

    0
Abstract: 

Mycorrhizal colonization improves uptake of nutrients as well as increase it. In this research effect of VAM (Vesicular- Arbuscular mycorrhiza) colonization on uptake of potassium and magnesium were studied. This experiment was performed natural soil containing spores of Glomus spp. Mycorrhizal spores were exposed to 4 concentrations of K solution, i. e.240 (soil K content), 360 and 480 mg/L and 3 concentrations of Mg, i.e.4.8 (soil Mg content), 7.2 and 9.6 meq/L concurrently. The plants were watered every 4 days for 16 days with 50 ml distilled water. A pot with sterilized soil was used as negative control.To study the mycorrhizal colonization, very thin longitudinal sections of plant roots (>1mm in diam.) were prepared manually and stained with lactophenol-cottonblue. Mycorrhizal percentage was determined by the grid-line intersect method.To measure the content of Mg and K the atomic absorption method was used.Mycorrhizal colonization increased Mg uptake but decreased K uptake. The maximum Mg content and minimum K content were observed in root and shoot when K (360 mg/L) and Mg (7.2 meq/L) were added to the pots concurrently. Regarding to interaction between VAM and these elements, by regulation of Mg and K in rhizosphere, the mycorrhizal colonization in plants can be increased and through this way the plant nutrient status aiming resistance against stresses of environment can be changed.

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