Herbal
abbas abhari; ali masomi; mansoreh shams abadi
Abstract
Introduction: Salinity stress is considered one of the most important stresses in arid regions and affects 20% of arable land around the world and is continuously increasing due to climate change and human activities. Frequent and continuous droughts in Iran and drought stress and subsequent water and ...
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Introduction: Salinity stress is considered one of the most important stresses in arid regions and affects 20% of arable land around the world and is continuously increasing due to climate change and human activities. Frequent and continuous droughts in Iran and drought stress and subsequent water and soil salinity make the production of more crops in arid and semi-arid regions face increasing restrictions and this causes a decrease in quantitative and qualitative yield of plants in these areas have been. Methods: To investigate the effect of salinity stress on some physiological traits of different wheat cultivars, a factorial experiment was conducted in a completely randomized design with three replications in greenhouse of Payame Noor University of Sabzevar. In this experiment, 15 wheat cultivars were compared at three levels of salinity (0, 5 and 10 dSm). Root and stem dry weight, leaf relative water content, electrolyte leakage, chlorophyll a, b and total, soluble sugars and amino proline content were measured in different cultivars. Results: The results showed that salinity increased the dry weight of root and stem and decreased the chlorophyll concentration. In salt stress condition, the lowest amount of leaf relative water belonged to Gasgozien cultivar with 15.61% and the highest amount was Bam with 62.34%The Mihan and Bam cultivars had the highest levels of chlorophyll a and b. The highest content of relative water content, proline amino acid and soluble sugars was observed in Pishtaz, Bam and Mihan cultivars.
Herbal
abbas abhari
Abstract
In order to predict nitrogen remobilization and effect of ammonium nitrate and ammonium sulfate on the efficiency of water and nitrogen consumption in the fennel, a factorial experiment was conducted in a randomized complete block design with three replications. The first factor consisted of planting ...
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In order to predict nitrogen remobilization and effect of ammonium nitrate and ammonium sulfate on the efficiency of water and nitrogen consumption in the fennel, a factorial experiment was conducted in a randomized complete block design with three replications. The first factor consisted of planting date at three levels (first: March 13, second: March 27 and third: April 18) and the second factor was nitrogen fertilizer spraying at three levels (ammonium sulfate (21%), ammonium nitrate (25%), and no fertilizer) with concentrations of one in a thousand in beginning of budding stage. The physiological efficiency of nitrogen increased to about 36.5, and the efficiency of water consumption was also increased. Therefore, it can be said that the availability of nitrogen in the plant tissue has a positive effect on the efficiency of water consumption. The results of the mean comparison showed that on the first and second planting date (respectively, with 85.3 and 92.9 mg/g of grain weight), ammonium sulfate foliar spraying treatment produced the highest amount of grain protein. Nevertheless, on the planting date of April 20, ammonium nitrate foliar spraying treatment produced the highest amount of grain protein with 81.12 mg/g of grain weight. Regarding the amount of total chlorophyll, the conditions were different.
Esmaeil Gholinezhad; Reza Darvishzadeh; abbas abhari
Abstract
In order to investigate the genetic diversity and the heritability of oil and protein content of seed in lines of sesame under different irrigation regimes and mycorrhizal fungi, 8 lines of sesame were studied in three separate experiments as factorial split plot layout based on a randomized block complete ...
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In order to investigate the genetic diversity and the heritability of oil and protein content of seed in lines of sesame under different irrigation regimes and mycorrhizal fungi, 8 lines of sesame were studied in three separate experiments as factorial split plot layout based on a randomized block complete design with three replications in research field of Agricultural Research Center, West-Azerbaijan in 2015 and 2016 cropping seasons. The main plots (factor A and B) consisted of three different irrigation regimes and factor B included three levels: two species of mycorrhiza fungi Glomus mosseae, Glomus intraradices and non-inoculated (control). Sub plots (factor C) consisted of eight sesame lines. Studied traits were including oil percentage and yield, protein percentage and yield, nitrogen percentage and chlorophyll index. Under optimum irrigation conditions, the maximum heritability was observed for protein percentage (0.88) and chlorophyll index (0.79) in inoculation with mycorrhizal fungi G. mosseae. Also, under moderate drought stress, the highest heritability was observed in chlorophyll index (0.70) and protein percentage (0.63) in inoculation with mycorrhizal fungi G. mosseae. In nine different environments of experiment, the maximum genetic variation of traits was observed for chlorophyll index, oil yield and protein yield. In all three irrigation conditions, the most phenotypic, genetic and environmental variance was observed in traits of chlorophyll index and protein yield. Therefore, with selecting traits such as chlorophyll index and protein percentage in breeding programs would improve oil and protein yield.
