Papers by Alaeddin Kordenaeej
پژوهشنامه اصلاح گیاهان زراعی, Apr 1, 2021
Forty selected soybean (Glycine max L. Merr) in the form of a randomized complete block design wi... more Forty selected soybean (Glycine max L. Merr) in the form of a randomized complete block design with three replications under normal irrigation and stress conditions in two separate locations, in the research farm of Karaj Seedling and Seed Breeding Research Institute in 2015-2015 crop year Was examined.Based on performance under non-stress (Yp) and stress (Ys) conditions, quantitative indices of drought tolerance, tolerance index (TOL), geometric mean (GMP), stress tolerance (STI), stress sensitivity (SSI), dry sensitivity (SDI), stress sensitivity percentage (SSPI), harmonic mean (HARM), stability Yield (YSI), relative dryness (RDI), were calculated. The results of analysis of variance showed a significant difference in genotypes in terms of yield per hectare under normal conditions at 5% probability level and a significant difference at 1% probability level of genotypes under water stress conditions. The results of mean comparison showed that the highest mean yield in irrigated and rainfed conditions belonged to 19 and 34 genotypes, respectively. The lowest values of tolerance index, stress sensitivity, stress sensitivity percentage, drought sensitivity, belong to cultivars 7, 10, 7, 10, respectively, and the highest values of geometric mean index, stress tolerance, performance stability, relative drought, harmonic mean, Belonged to the numbers 1,7,7,7,1, respectively. Correlation analysis of yield and drought tolerance indices in stress and non-stress environment showed that STI and GMP indices are the most suitable indices for selection top genotypes. Factor analysis also showed that the first two factors explain 98% (the first factor of 58.9% and the second factor of 39.3%) of the studied changes in stress and non-stress conditions. Based on biplot analysis based on the first and second main components, genotypes 1 and 34 are located in the region with high production potential and low sensitivity to stress, and biplot analysis justifies the selection of stress tolerant genotype based on GMP.STI index.
پژوهشنامه اصلاح گیاهان زراعی, Oct 1, 2022
Iranian Journal of Genetics and Plant Breeding, Apr 1, 2013
Mineral nutrient malnutrition, particularly deficiency in zinc and iron, afflicts over 3 billion ... more Mineral nutrient malnutrition, particularly deficiency in zinc and iron, afflicts over 3 billion people worldwide. Biofortification of food crops is the best approach for conciliating the micronutrient deficiencies. Understanding the genetic basis of their accumulation is the preconditions for enhancing of these micronutrients. In our study, a mapping population of a set of 118 recombinant inbred lines (RILs), derived from a cross between an Iranian local variety ''Tabassi'', and a European elite variety ''Taifun'' were analyzed for grain iron and zinc contents. The grains of the RILs population were measured for Fe and Zn concentrations using atomic absorption spectrophotometer. The grain Fe and Zn concentrations in the RILs population ranged from 9.65 to 71.4 and 44.35 to 95.6 mg/kg, respectively. An available linkage map, comprising of 205 simple sequence repeats (SSR) markers and three morphological loci as well, comprising 26 linkage groups, was used for mapping QTLs of interest. For the grain Fe concentration, six significant QTL (LOD≥2.5) were detected on chromosomes 2A, 3D, 4D, 7B, and 7D explaining 29.1% of the phenotypic variations of the trait. For the grain Zn concentration, two significant QTL was detected on chromosomes 1A and 4A explaining 51.45% of the phenotypic variations of the trait.
Journal of Crop Breeding
Forty selected soybean (Glycine max L. Merr) in the form of a randomized complete block design wi... more Forty selected soybean (Glycine max L. Merr) in the form of a randomized complete block design with three replications under normal irrigation and stress conditions in two separate locations, in the research farm of Karaj Seedling and Seed Breeding Research Institute in 2015-2015 crop year Was examined.Based on performance under non-stress (Yp) and stress (Ys) conditions, quantitative indices of drought tolerance, tolerance index (TOL), geometric mean (GMP), stress tolerance (STI), stress sensitivity (SSI), dry sensitivity (SDI), stress sensitivity percentage (SSPI), harmonic mean (HARM), stability Yield (YSI), relative dryness (RDI), were calculated. The results of analysis of variance showed a significant difference in genotypes in terms of yield per hectare under normal conditions at 5% probability level and a significant difference at 1% probability level of genotypes under water stress conditions. The results of mean comparison showed that the highest mean yield in irrigated and rainfed conditions belonged to 19 and 34 genotypes, respectively. The lowest values of tolerance index, stress sensitivity, stress sensitivity percentage, drought sensitivity, belong to cultivars 7, 10, 7, 10, respectively, and the highest values of geometric mean index, stress tolerance, performance stability, relative drought, harmonic mean, Belonged to the numbers 1,7,7,7,1, respectively. Correlation analysis of yield and drought tolerance indices in stress and non-stress environment showed that STI and GMP indices are the most suitable indices for selection top genotypes. Factor analysis also showed that the first two factors explain 98% (the first factor of 58.9% and the second factor of 39.3%) of the studied changes in stress and non-stress conditions. Based on biplot analysis based on the first and second main components, genotypes 1 and 34 are located in the region with high production potential and low sensitivity to stress, and biplot analysis justifies the selection of stress tolerant genotype based on GMP.STI index.
Plants
Karyomorphology and genome size of 15 St John’s wort (Hypericum perforatum L.) populations are re... more Karyomorphology and genome size of 15 St John’s wort (Hypericum perforatum L.) populations are reported for the first time. Root tips and fresh young leaves were used for karyological studies and flow cytometric (FCM) measurements, respectively. The chromosome length varied from 0.81 µm to 1.16 µm, and chromosome types were determined as “m”. Eight different somatic chromosome numbers were found (2n = 16, 22, 24, 26, 28, 30, 32, 38). Based on the observed basic (x) chromosome numbers of x = 8, 11, 13, 14, 15, 19, this may correspond to diploid (2x), triploid (3x), tetraploid (4x), respectively. Interestingly, we found mixoploidy (3x − 4x) in the root tips of one of the populations. Hybridization, polyploidy and dysploid variation may be the main factors associated with the chromosome number evolution of this species. FCM showed that 2C DNA contents vary from 0.87 to 2.02 pg, showing more than a 2-fold variation. The mean amount of 2C DNA/chromosome and the mean of monoploid genome s...
phosphate synthase ) دراد هنيمآ ديسا تخاس ريسم رد یديلک یميزنآ هک تسا کيتامورآ یاه . اشنم اب نژ ک... more phosphate synthase ) دراد هنيمآ ديسا تخاس ريسم رد یديلک یميزنآ هک تسا کيتامورآ یاه . اشنم اب نژ کي زا هدافتسا شهوژپ نيا یلصا فده ء فلع هب تمواقم داجيا یارب یهايگ رد شک دوب هايگ نامه . نژ نياربانب EPSPS دوخن هايگ زا ( Cicer arietinum L. ) هناسمه ود و یزاس ديسا نآ هنيمآ ( Pro187Ala و Thr183Ile ) فلع هب تمواقم داجيا هک یم تيسوفيلاگ شک دنيامن دش حلاصا . نوتوت لدم هايگ رد روکذم نژ درکلمع ( Nicotiana tabacum L. ) دش یسررب . تيلباق گرب یياززاب تخيرارت نوتوت ناهايگ یاه هک ه نژ EPSPS حلاصا هدش زا گ ي ها دوخن ار ب ي نا م ی دننک تظلغ رد فلع فلتخم یاه لاگ شک تيسوفي ( ات رفص زا کي یليم رلاوم ) رارق یسررب دروم و تفرگ گرب تظلغ همه رد اه تظلغ رد یتح اه کي یليم دندش یياززاب رلاوم . ناهايگ نيا تظلغ اب هناخلگ رد نينچمه دصرد کي لاگ دندش یرپسا تيسوفي دندنام هدنز و . رخآ رد نژ
Journal of Plant Process and Function, 2016
Acta agriculturae Slovenica, 2020
This study aimed to characterize if dust sprayed on soybean foliage impacts its yield and yield c... more This study aimed to characterize if dust sprayed on soybean foliage impacts its yield and yield component characteristics. In 2017 and 2018, soybean [Glycine max (L.) Merr.] was planted using a factorial randomized complete block design with three replicates. Plants were sprayed with a 20 g m-2 of dust at four stages of the growth cycle, including third-node, the beginning of flowering, the beginning of podding, and the beginning of seed formation. Dust spraying was then continued twice weekly until the late full seed stage. Plant measurements included yield, yield components, stomatal conductance, peroxidase, and superoxide dismutase antioxidant enzymes activities. Results showed that depending on the time of application, the dust coverage created a range of yield loss in soybeans, most likely due to a reduction in stomatal conductance, grains plant-1 and 100-seed mass. Therefore, soybean fields that are regularly exposed to dust might be subjected to reduced yield.
Journal of Medicinal Plants, 2020
Terminal drought is the most important and dominating stress in areas of wheat cultivation with M... more Terminal drought is the most important and dominating stress in areas of wheat cultivation with Mediterranean climates as prevails in Iran. However, evaluation of plants response to natural drought is difficult due to lack of uniform drought stress in the field. Successful experiments of simulating the effect of terminal drought by chemical desiccants like potassium iodide (KI) during grain filling have already been reported. In the present work we evaluated a mapping population of 118 F2:7 recombinant inbred lines (RILs) from a cross between a typical Iranian drought tolerant landrace Tabassi and a highly bred and non-drought tolerant European wheat variety Taifun for yield and yield component QTLs in three drought stress environments i.e. (1) under natural post anthesis drought stress in Iran, (2) under drought conditions provided by an electro automated shelter in Hungary, and (3) under a potassium iodide induced post anthesis drought applied in Austria. In this paper, the efficiency of KI treatment to simulate the effect of post anthesis drought and its utilization for QTL mapping in comparison with a natural drought stress is discussed.
In stone fruit trees such as plums, favorable pollination followed by good fertilization is neces... more In stone fruit trees such as plums, favorable pollination followed by good fertilization is necessary for high quality and quantity fruit yield. Therefore, pollen performance including pollen quantity produced in a flower and pollen quality consists of viability, longevity, morphological homogeneity, pollen germination and pollen tube growth rate are very important component of fertilization and fruit setting. In the study main pollen traits including germination, tube growth and longevity were investigated in ten favorable selected cultivars of plum which had been cultivated in Maragheh region, Iran. In late April of 2011, flower buds were collected in balloon stage and the pollen related parameters evaluated in vitro conditions immediately after sampling and also after 8 months storing in-20 o C. The results showed that there was a significant difference for pollen germination percentage and pollen tube length among the studied cultivars both immediately after sampling time and after 8 months maintenance in-20 o C. Among the studied plum cultivars, means of pollen germination percentage was ranged between 97.1-55.8% immediately after sampling time and 89.3-51.2% after 8 months maintenance in-20 o C. Also, pollen tube length among the plum cultivars were 642.4-353.6 μ m immediately after sampling time and 585.1-261.8μ m after 8 months maintenance in-20 o C. Regarding the obtained data "Gojah Soltan" cultivar with highest pollen germination percentage and longevity could be proposed for orchard establishment and breeding programs as a pollinizer for pollination of commercially growing plum cultivars particularly in the studied area and other similar areas.
Journal of Plant Protection Research, 2013
Sugar beet is one of the most important industrial crops in Iran. For the last two decades it has... more Sugar beet is one of the most important industrial crops in Iran. For the last two decades it has been mainly affected by a destructive virus, beet necrotic yellow vein virus (BNYVV). The Polymyxa betae is the only natural transmitting agent of the disease among the plants. Developing accurate diagnostic methods may have a major impact on the rising of resistant germplasms. In the present study, specific monoclonal recombinant antibodies in the form of single chain variable fragments (scFv) were obtained from naïve phage display libraries. The fungus specific glutathione-S-transferase (GST) protein was chosen as an antigen for developing antibodies and diagnostic purposes. To generate specific scFv, screening of Tomlinson phage display libraries was performed by applying both recombinant and native fungal GST. Using the recombinant GST in the panning process resulted in the isolation of an antibody only bound to recombinant GST but it failed to detect native GST in the infected plan...
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Papers by Alaeddin Kordenaeej