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Showing 4 results for Rezaei
Sedigh Ebrahimi, Abdolhossein Rezaei Nejad, Ahmad Ismaili, Farhad Karami,
Volume 1, Issue 2 (2-2015)
Abstract
Evaluation of genetic diversity among apricot genotypes may increase our genetic knowledge and provide better plant materials for selection of desirable genotypes. In this study, genetic diversity of 26 apricot genotypes phenological and physiological traits of 26 apricot cultivars collected at Kurdistan agricultural research station was studied based on a randomized complete block design with three replications for phenological and physiological traits. Analysis of variance showed that the effect of genotype on flower initiation, flowering period, relative water content (RWC), ion leakage, proline and potassium content of flower pistil tissue, spring frost damage to flowers, harvest date, total soluble solids, titratable Acidity (TA) and pH was significant at the 1% level. These results indicated that the existence of significant genetic variation among studied genotypes. The lowest heritability (28.5%) was belonged to date of 50% flowering, indicating the strong effect of environmental factors on this trait. The highest heritability (99%) estimated for related traits to yield including total soluble solids, fruit harvesting period and uniform rippening, suggested that the influence of environmental effects on these traits were very low.
Esmail Arab Tajandarreh, Ahmad Ismaili, Abdolhossein Rezaei Nejad, Farhad Karami,
Volume 3, Issue 2 (3-2017)
Abstract
Strawberry (Fragaria × ananassa Duch.) is one of the important and commercial small fruits that are planted in temperate regions which contain high amount of natural antioxidants. Study of genetic diversity is very important for distinguish the genotypes relationships and evaluation and exploitation of genetic resources for breeding programs. To evaluate the physiological and phenological characteristics of strawberries genotypes, an experiment was carried out using a randomized complete block design with 3 replications in the Agricultural Research Center of Kurdistan, Iran. Physiological parameters (amount of chlorophyll a, b and ab, soluble solids, titratable acidity and anthocyanin) and phenological characters (appearance of first stolon, first flower and first fruit, flowering and fruiting period) and yield of genotypes were evaluated. Results of analysis of variance showed significant differences among genotypes for all traits at the 1% level of probability, indicating the existence of genetic diversity among genotypes. The results of mean comparison showed significant differences among genotypes for all traits, indicating existence of wide diversity among the studied strawberry genotypes. The highest chlorophyll content belonged to Paros genotype and the highest yield recorded from Queen Eliza and Gaviota genotypes, respectively. The highest anthocyanin and soluble solids content was belonged to Gaviota and lowest amount of these parameters belonged to Paros and Chandler genotypes and Chandler genotype also had the highest amount of chlorophyll a. There were little difference between phenotypic and genotypic coefficient of variation, indicating the low effect of environment on these characters. All traits had high common heritability with range of 82-99 %. Data were analyzed using principal factor analysis. The factor analysis technique extracted four factors. Four factors explained about 74.05% of the total variation, and 50.84% of the variance was accounted for by the two first factors. Factors I and II were identified as photosynthetic, and fertility Index, respectively. According to results of factor analysis and other analysis, Paros genotype was identified as suitable cultivar.
Farshad Fallah, Danial Kahrizi, Abbas Rezaeizad, Alireza Zebarzadi, Lila Zarei,
Volume 6, Issue 2 (3-2020)
Abstract
After cereals, oilseeds are the second-largest food reserves in the world. According to available statistics, more than 95 percent of Iran's oil needs are imported. Given the growing need for edible oils in Iran, it is important to identify fatty acids in the oilseed crops. Camelina sativa L. is an oil-medicinal plant and belongs to the Brassicaceae family that requires very little water and fertilizers. It is known as a low input plant. In this study, to analyze the fatty acid profile for breeding programs and specific industries, 137 doubled haploid camelina lines were evaluated in terms of fatty acid composition and variability of fatty acids trait, to estimate phenotypic coefficient of variation (PCV), genotypic coefficient of variation (GCV), heritability, and expected genetic advance. The determination of fatty acid by gas chromatography showed that 18 types of fatty acids were detectable in camelina seed oil. It is shown that the two fatty acids (C14:0 and C16:1) have the highest PCV and GCV. The highest heritability for C20:2, C20:3 and C20:0 fatty acids was estimated 98.92, 98.59 and 96.49 percent, respectively. In this study, two lines with linoleic acid of 35.81-36.67% and four lines with values ranged from 22.08-23.00% were introduced. The ratio of omega-6 to omega-3 (0.479-0.759) was obtained in the studied lines.
Mahdi Rezaei, Abdoreza Kavand,
Volume 7, Issue 2 (3-2021)
Abstract
Cultivar identification in micro-propagated date palm seedlings is laborious so that application of molecular markers to facilitate and acceleration of the procedure seems inevitable. Given the need for control the originality of micro- propagated date palm seedlings, the aim of this study was evaluation of SSR markers usability to cultivar identification in micro-propagated date palm seedlings. Original samples of Green Ghanami, Red Ghanami, Gantar, Deiry, Ostaemran, Barhi, Medjool, Zahedi and Piarum cultivars were used control. Taking into account the rigidity of leaves and subsequently high consumption of liquid nitrogen to powder leaves, an efficient method for powdering of leaves using Tissue Lyser II instrument was optimized. Eight SSR primer pairs were used for polymerase chain reaction. The Results showed that by using these molecular markers and reliable controls, determination of micro- propagated date palm cultivars is feasible. Clustering of cultivars showed that all of them were differentiated using five SSR primer pairs including mPdCIR025, mPdCIR057, mPdCIR070, PDAG1003 and DP175. Also, barcoding of scored band illustrated that c1 allele (230 to 240 bp) for Piarum cultivar and d3 allele (220 to 230 bp) for Medjool cultivar were exclusive. Totally to make the results referable, cultivar identification diagram was drawn up.
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