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Showing 5 results for Hosseinpour
Ali Darvishian, Ahmad Ismaili, Farhad Nazarian-Firouzabadi, Reza Mirdrikvand, Tahmasb Hosseinpour,
Volume 2, Issue 2 (3-2016)
Abstract
Plant breeding is selection of advanced genotypes and its progress depends on correct evaluation of genetic variation. Among different selection procedure, molecular markers have a good potential for evaluation of variation. In this research, RAPD molecular markers were used to evaluation of genetic diversity among 25 wheat cultivars and advanced breeding lines. Genomic DNA was extracted from leaves by Dellaporta method and 30 primers were used for PCR amplification. Results of Primers led to 200 storable electrophoretic bands which 130 of them (65%) were polymorphic. F4 and A18 primers produced the greatest and lowest band, respectively. Cluster analysis was performed based on band presence (1) and absence (0) using Jaccard coefficient similarity and UPGMA method. Similarity coefficient ranged from 0.22 to 0.87 with an average of 0.64. The highest similarity (0.87) was observed between Azar2 and Sardari and lowest similarity (0.22) was observed between Seimareh and BAVICORA. With cut of line on 0.72 in dendrogram, 6 main groups were clustered and other genotypes were clustered in different group. Regarding to the high similarity among these genotypes, it is necessary to develop the wheat germplasm in related research centers.
M Mohtasham Mohammadi, K Rahmatollah Karimizadeh, H Tahmaseb Hosseinpour, G Hasan Ghojogh, S Kamal Shahbazi, S Peyman Sharifi,
Volume 4, Issue 2 (3-2018)
Abstract
Breeding of adapted and variation germplasm can be a main element for strength of research political in stable agricultture system. This is achived by targeting variety selection onto different growing environments under natural heat and drought stresses. To realize this, breeding programs usually undertake a rigorous genotypes performance evaluation across locations and years mostly at the final stage of variety development process. More accurate selection of wheat genotypes requires reducing environmental effects for explaining of their genetic potential with appropriate analysis of genotype × environment. In this research, 18 improved bread wheat genotypes were planted in randomized compelet block design with 4 replications in Gachsaran, Khoramabad, Gonbad, Moghan and Ilam stations during three years (2011-2014). Simple and combined analysis variance were done on grain yield data. Due to significant interaction effects for Year × locatin and genotype × year × locatin, yield stability of considered genotypes were analysed using some parameteric and nonparametric methods. Obtained results showed genotypes no. 10 and 17 with 3107 and 3028 kg/ha had the highest grain yield. Based on parametric statistics: CV i,  ,  ,  ،, MS Y/L and MSPI and non-paramertric statistics:  ,  ,  , Top, Mid, Low ،, R-Sum, and SDR, G10 had more yield stability. More over, G12 and G17 showed suitable yiled stability among high production genotypes. Earliness Genotypes 10 and 17 lines had optimum plant height and partially high thousand kernel weight.
Rahmatollah Karimizadeh, Tahmasb Hosseinpour, Jabbar Alt Jafarby, Kamal Shahbazi Homonlo, Mohammad Armion,
Volume 7, Issue 2 (3-2021)
Abstract
There are different methods for study the genotype × environment interactions and determining stable genotypes such as parametric, non-parametric and multivariate methods. In this research, 19 selective genotypes from advanced trials of durum wheat at 2011-2012 agronomic year, have been cultivated with Dehdasht check cultivar for three growing years (2012-2015) in five locations (including Gachsaran, Gonbad, Khorramabad, Moghan and Ilam) in a randomized complete block design with four replications in each location. Combined analysis of variance indicated significant effects of genotype, environment and interactions of genotype × environment. In parametric uni-variate methods, genotypes 7, 12, 18 and 20 were determined as stable genotypes. In non-parametric uni-variate methods, genotypes 2, 7, 12, 13, 18, 19 and 20 had the lowest genotype × environment interaction and they were determined as stable genotypes. In AMMI method, genotypes 2, 7, 12, 19 and 20 had the lowest rank in different environments and highest grain yield, and these genotypes seems more stable genotypes. It can be concluded that genotypes 7, 12, 18 and 20 could be considered as promising genotypes and candidate for introducing new durum cultivar.
Rahmatollah Karimizadeh, Tahmasp Hosseinpour, Peyman Sharifi, Jabar Alt Jafarby, Kamal Shahbazi, Kavoos Keshavarzi,
Volume 8, Issue 1 (8-2021)
Abstract
Durum wheat (Triticum turgidum L.), like most other crops, is affected by various stresses. Therefore, cultivars that, in addition to the ability to produce higher yields, can maintain their yield potential in different years and locations are considered superior cultivars. In order to obtain high-yielding and stable genotypes of durum wheat, 16 lines with two control cultivars Dehdasht and Seymareh were evaluated in four locations of Gachsaran, Gonbad, Khorramabad and Moghan based on randomized complete block design with four replications in three cropping seasons (2013-2016). Combined analysis of variance indicated a significant effect of genotype, environment and genotype by environment interaction. Genotypes G6 and G18 had the highest and lowest grain yield, respectively. Based on parametric methods, genotypes G3, G5, G15, G13 and G16 and based on non-parametric methods, genotypes G1, G3, G4, G5, G15 and G3 were the most stable genotypes. The most stable genotypes based on the total Kang sum-rank were genotypes G15, G5, G6 and G1. The Selection index of ideal genotype (SIIG) was used to integrate all indices into one index, based on which genotypes G5 and G15 were the superior genotypes with the highest SIIG index and grain yield. Based on all indices, genotypes G5 and G15 were the most stable genotype in terms of grain yield and can be used in cultivar introduction processes.
Seyedeh Somayeh Mousavi, Omidali Akbarpour, Dr Tahmasb Hosseinpour,
Volume 10, Issue 1 (9-2023)
Abstract
In this research, 15 bread wheat genotypes along with Aftab variety as a control variety were implemented with 4 replications in the form of randomized complete block design for 3 crop years (2016-2019) at Sarab Chengai Station in Khorramabad. The likelihood ratio test (LRT) showed that the genotype-year interaction effect was significant for grain yield. Based on this, singular value analysis (SVD) was performed on the matrix of best linear unbiased predictions (BLUP) of genotype × year interaction to evaluate the stability of genotypes. The scree plot showed that the first principal component accounted for 71.7% and the second principal component accounted for 28.3% of the matrix changes resulting from the best unbiased predictions of the genotype interaction per year. The biplot of the first principal component of the environment against the nominal yield also showed that genotypes No. 9, 12 and 13 had a negligible contribution to the genotype × year interaction and had higher general stability. Also, the biplot of grain yield against the weighted average of absolute scores (WAASB) placed the genotypes in four regions, so that genotypes No. 15, 16, 12, 11, and 10 are in the fourth region due to high stability (low values WAASB) and magnitude of response variable (high performance) were identified as superior genotypes. The WAASBY index (weighted average of WAASB stability and performance) identified genotypes No. 15, 16, 12, 10, 11, 14, 9 and 4 as stable and high yielding genotypes. In general, based on WAASB and WAASBY indices and their comparison, genotypes 15, 16, 12, 11 and 10 were selected as the best genotypes that can be recommended for cultivation in similar climates.
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