B. Abbaszadeh; E. Sharifi Ashourabadi; M.H. Lebaschi; M. Naderi hajibagher Kandy; F. Moghadami
Abstract
In this research effect of drought stress on physiological characteristics of balm (Melissa officinalis L.) was performed under field condition in Karaj, Iran in 2005. Experiment was conducted using randomized complete block design with 4 replications. Treatment included T1 (non stress), T2 (80%FC), ...
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In this research effect of drought stress on physiological characteristics of balm (Melissa officinalis L.) was performed under field condition in Karaj, Iran in 2005. Experiment was conducted using randomized complete block design with 4 replications. Treatment included T1 (non stress), T2 (80%FC), T3 (60%FC), T4 (40%FC) and T5 (20%FC). Effect of drought stress on chlorophyll a, chlorophyll b, proline, soluble sugars, relative water contents, percentage and yield of essential oil were significant (α=0.001). Effect of drought stress on total chlorophyll was significant (α=0.005). Comparison of treatment means showed that highest chlorophyll a (1.921mg/l), chlorophyll b (1.197mg/l), total chlorophyll (2/283mg/l) were related to T1 (control), T5 (20%FC) and T1 (control), respectively. Highest accumulation of proline with 2.545 mg/l mean was related to T3 (60%FC). Maximum relative water content with 93.369 mean percentage related to T1 (control). It could be concluded that plant accumulation of proline and solublesugars increased tolerance and showed that moderate drought stress is beneficial for balm production.
Z. Baher Nik; M. Mirza; B. Abbaszadeh; M. Naderi Hajy Bagher Candy
Volume 23, Issue 3 , November 2007, , Pages 315-322
Abstract
Since the relationship between soil and water status of plants and its effect on growth, propagation and metabolism process, the effect of water stress on Parthenium argetatum, was investigated. Irrigation treatments were selected based on different percentage of field capacity (FC), including (1)a control ...
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Since the relationship between soil and water status of plants and its effect on growth, propagation and metabolism process, the effect of water stress on Parthenium argetatum, was investigated. Irrigation treatments were selected based on different percentage of field capacity (FC), including (1)a control sample which was irrigated to full field capacity during the growing season (FC), (2) two moderate water stress treatments (LS1=75% and LS2=50% of field capacity) and (3) severe water stress treatments (HS=25% of field capacity). Results showed that plant RWC (relative water content) decreased from 65.8% to 42.8%. Also water stress induced high amount of sugar and proline. The amount of sugar was the highest in sever treatment (HS=2.9 mg/g FW) while it was the least in FC treatment (1.07 mg/g FW). The amount of proline was the highest in sever treatment (HS= 4.28 mM) while it changed from 1.1 in LS1, 1.56 in LS2 and the least (0.96 mM) in FC treatments.
A. Alizadeh Sahzabi; E. Sharifi Ashorabadi; A.H. Shiranirad; B. Abaszadeh
Volume 23, Issue 3 , November 2007, , Pages 416-431
Abstract
The effect of applying different methods and nitrogen levels on yield and essential oil of savagery (Satureja hortensis L.) was investigated using a factorial experiment based on randomized complete block design with 3 replications in 2005, Karaj, Iran. The treatments included application of solid nitrogen ...
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The effect of applying different methods and nitrogen levels on yield and essential oil of savagery (Satureja hortensis L.) was investigated using a factorial experiment based on randomized complete block design with 3 replications in 2005, Karaj, Iran. The treatments included application of solid nitrogen in soil with 4 levels 0, 50, 100 and 150 kg/ha and spray of nitrogen on foliage with 4 levels 0, 4.5, 6 and 7.5 percent. The nitrogen applied three times equally. The results showed, effect of treatments on biological yield, plant height, essential oil percentage, flowering shoot yield, number of lateral branch (P< 0.01) and harvest index were significant (P<0.05). Interaction of treatments on essential oil percentage, essential oil yield, flowering shoot yield (P<0.01) and biological yield (P<0.05) were significant. This experiment found that applying 100 kg pure nitrogen in soil with 4.5% produced highest biological yield, seed and flowering shoot with means of 4424, 875.3 and 1855 kg ha-1, respectively. The results showed, increase of nitrogen application caused decrease of essential oil percentage. Highest essential oil percentage related to application of 6% of nitrogen solution with mean of 2.13%. Utilization of 150 kg of solid nitrogen with 7.5% of nitrogen solution produced highest plant height with mean of 66.88 cm, highest lateral branch with mean of 18 and highest essential oil yield with mean of 33.7 kg ha-1. Highest harvest index related to control with mean of 25.98%. The results showed that use of sprayed nitrogen on foliage decrease nitrogen application. Therefore, this method could be suitable for sustainable agriculture.
F. Safikhani; H. Heydarye sharifabadi; S.A. Syadat; E. Sharifi ashorabadi; S.M. Syednedjad; B. Abbaszadeh
Volume 23, Issue 2 , August 2007, , Pages 183-194
Abstract
In order to investigate the effect of drought stress on yield and morphologic characteristics of Deracocephalum moldavica L. under field condition, this research wsa conducted in 2004-2005 at Alborz station. Experiment was carried out in a split plot with randomized complete block design with four replications. ...
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In order to investigate the effect of drought stress on yield and morphologic characteristics of Deracocephalum moldavica L. under field condition, this research wsa conducted in 2004-2005 at Alborz station. Experiment was carried out in a split plot with randomized complete block design with four replications. Main factors consisted of three plant populations of Deracocephalum moldavica L. which were collected from Tehran, Esfahan and Farse provinces. Subplots consisted of three level of drought stress (100%, 60% and 40% Fc). The results showed the effect of different plant population on morphological characteristics and yield were not significant. Effect of drought stress on length, cross and leaf surface, high plant, stem diameter, lateral shoot, length of highest internodes, weight of 1000 grain and flower shoot, leaf, stem and biological yield were significant. Mean of treatments showed that control (without drought stress treatments) at first and second years were 4126 and 4033 kg/ha of flower shoot and 4929 and 4921 kg/ha biological yield had significant differences with other drought levels. Mean of interaction effects of main and sub plots not showed significant difference for shoot flower production. Highest biological yield was related to controls of three plant population which were different to other treatments. It could be included from this investigation that mild stress could be applied in complete flower stage harvest.
M.R. Ardakani; B. Abbaszadeh; E. Sharifi Ashourabadi; M.H. Lebaschi; F. Packnejad
Volume 23, Issue 2 , August 2007, , Pages 251-261
Abstract
In order to study drought stress effect on quantitative and qualitative features of balm (Melissa officinalis L.) a research was conducted under field condition in Karaj, Iran in 2005. Experiment was conducted using Randomized Complete Block Design with 4 replications. Treatment included T1 (non stress), ...
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In order to study drought stress effect on quantitative and qualitative features of balm (Melissa officinalis L.) a research was conducted under field condition in Karaj, Iran in 2005. Experiment was conducted using Randomized Complete Block Design with 4 replications. Treatment included T1 (non stress), T2 (80%FC), T3 (60%FC), T4 (40%FC) and T5 (20%FC). Effect of drought stress on shoot yield, essential oil yield, percentage of essential oil, leaf and stem yield, height, tiller number, length and width of leaf, stem diameter and internodes was significant (α=0.001). Effect of drought stress on number of lateral stem was not significant. Comparison of treatment means showed that highest shoot yield was related to T1 (non Stress) (6469kg/ha), highest essential oil (12.970 kg/ha) and highest essential oil percentage (0.3012%) was related to T4 (40%FC) and T5 (20%FC), respectively. Highest height (65.32 cm), leaf length (6.27 cm) and width (4.58 cm) were related to T1 (non stress). Highest stem diameter was related to T5 (20%FC). It could be concluded that moderate drought stress is beneficial for balm essential oil.
F. Safikhani; H. Heydari sharifabad; A. Syadat; E. Sharifi Ashorabadi; S.M. Syednedjad; B. Abbaszadeh
Volume 23, Issue 1 , May 2007, , Pages 86-99
Abstract
In order to investigation effect of drought stress essential oil percent and yield and physiological characteristics of medicinal plant Deracocephalum moldavica L. under greenhouse. This research performed in 2004-2005 at research institute of forests and rangelands. Experiment was carried out in a split ...
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In order to investigation effect of drought stress essential oil percent and yield and physiological characteristics of medicinal plant Deracocephalum moldavica L. under greenhouse. This research performed in 2004-2005 at research institute of forests and rangelands. Experiment was carried out in a split plot under randomize complete block design with four replications. Main factors were contains of three populations of Deracocephalum moldavica L. that collected from Tehran, Esfahan and Fars provinces. Subplots were contains three level of drought stress 100% Fc, 60% Fc and 40% Fc. The results showed that effect of different populations not significant. The results showed that effect of drought stress on essence yield, amount of solution carbohydrates, amount of a, b and total chlorophyll at two years were significant. So effect of drought stress on proline in second year was significant. The results analysis variation of two years showed that effect of year on essential oil percent and proline amount was significant (α=1%). Comparison mean of treatments showed that at first year highest of essence yield, solution carbohydrate and chlorophyll respectively related to 60%, 40% and 100% of field capacity treatments. At second year highest proline amount, solution carbohydrate and chlorophyll respectively related to 40%, 40% and 100% of field capacity treatments. Comparison mean treatments of plant populations and different levels of drought stress showed that at first year highest of essential oil percent related to Esfahan seed*60% humidity of field capacity. Highest chlorophyll relate to 100% humidity of field capacity in three ecotypes. At second year highest solution carbohydrate and chlorophyll respectively related to 40% and 100% of field capacity in three populations.
B. Abbaszadeh; E. Sharifi Ashourabadi; M.R. Ardakani; M.H. Lebaschi; F. Safikhani; M. Naderi Hadjibagher Kandi; F. Sefidkon
Volume 22, Issue 3 , November 2006, , Pages 223-230
Abstract
In order to investigation of application methods of nitrogen fertilizer on essential oil content and composition of Balm, the experiment was conducted during 7 months in field condition at Alborze Research complex in 2004. This experiment was carried out at two levels of suspension nitrogen (4.5% and ...
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In order to investigation of application methods of nitrogen fertilizer on essential oil content and composition of Balm, the experiment was conducted during 7 months in field condition at Alborze Research complex in 2004. This experiment was carried out at two levels of suspension nitrogen (4.5% and 6%) spraying on shoot and two levels of solid nitrogen (60 and 90 kg N/ha) application in soil with control. Treatment was implicated to three equal divisions. This experiment was carried out in complete randomized block design with 4 replications. In floral imitation, plants harvested and essential oil were extracted by water distillation. The essential oils were analyzed by GC and GC/MS. The results showed a significant difference (1%) among nitrogen rates application on essential oil yield. Identification of essential oil components showed that some compounds of the oil decreased with more application of nitrogen in two methods of nitrogen application, whereas some other compounds increased with most application nitrogen in both methods.
