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Showing 3 results for Haghparast
Identification of Effective Traits on Grain Yield of Bread Wheat Genotypes in Rainfed and Supplementary Irrigation
Saman Motazedi, Saeed Sayfzadeh, Reza Haghparast, Hamidreza Zakerin, Hamid Jabbari,
Volume 11, Issue 30 (9-2019)
Abstract
The development of high yielding cultivars is the main goal of many wheat breeding programs and the realization of it depends on the relationship between grain yield and its components. To investigate the relationship between grain yield and some morphological characteristics and to determine the relative importance of each of them, 25 bread wheat genotypes were evaluated in both rain-fed and supplementary irrigation systems with randomized complete block design with three replications during the farming periods in a farm featuring Mediterranean climate in west of country between 2014 and 2016 (Kermanshah’s Sararud Rain-Fed Agricultural Research Station). Variance Analysis results showed significant differences among lines for all studied traits in both rain-fed and supplementary irrigation. Simple correlation coefficients between traits in both conditions indicated that cell membrane stability, flag leaf length, Awn length, relative water content, thousand grain weight and chlorophyll content, are significantly correlated with the grain yield. Regression analysis showed that peduncle length, relative water content, proline content and chlorophyll content in rainfed and traits such as the relative water content and proline content for the supplementary irrigation condition were introduced into regression model, 0/906 and 0/840 of the total changes related to grain yield, respectively.To determine the direct and indirect effects of traits on yield, path coefficient analysis was done, the highest positive direct effects on grain yield were related to peduncle length, relative water content and chlorophyll content under both mentioned conditions, that showed important characteristics in relation to grain yield. Genotype No.1 (Azar2) for supplementary irrigation conditions and Genotype No. 25 (Rijjaw) for rainfed conditions are superior to the rest of the studied cultivars and lines also can be introduced for cultivation in the climatic conditions of the study area. The physiological characteristics of leaf relative water content, proline content and chlorophyll content as well as morphological traits of peduncle length and flag leaf length are introduced as suitable traits for the improvement of rainfed cultivars.

Study of Grain Yield and Agro-Physiological Characteristics of Some Promising Rainfed Bread Wheat Genotypes under No-Till Condition
Reza Mohammadi, Mahdi Geravandi, Reza Haghparast, Rahman Rajabi, Abdolvahab Abdulahi, Reza Malekhosseini, Khodadad Yarkarami, Behzad Shahsavari,
Volume 11, Issue 32 (12-2019)
Abstract
   In order to evaluate the productivity potential of some bread wheat varieties and promising lines under no-till rainfed condition two different on-farm trials were conducted in cold (Sonqor) and warm (Sarpol-e Zahab) regions of Kermanshah province during 2017-18 cropping season. In the cold condition, 12 winter genotypes and in the warm condition 32 spring genotypes were evaluated for grain yield and its components, morphological traits, canopy temperature, relative chlorophyll content (SPAD) and normalized difference vegetation index (NDVI). In the cold condition, the genotypes were significantly different for peduncle extrusion length, number of grain per spike, number of spike per m2 and thousand-kernel weight, peduncle length and gain yield. Grain yield of genotypes varied from 2849 (Sardari) to 4274 (G10) kgha-1 and four genotypes (G2, G4, G10 and G12) had higher yield than check variety (p < 0.05). In the warm condition, the genotypes were different for SPAD, plant height, peduncle extrusion length, peduncle length, 1000-kernel weight and days to heading. Grain yield of genotypes varied from 364 (G22) to 1363 (G8) kgha-1, and G8 and G10 were superior to the check variety (Aftab) by 89% and 61%, respectively. The profiles of trait associations were relatively different in cold and warm conditions. NDVI was positively correlated with grain yield, number of kernel per spike and 1000-kernel weight and negatively correlated with canopy temperature in the warm region. These results showing the importance of NDVI in identifying productive wheat genotypes for dryland conditions.

Genetic Diversity and Inter-Relationships of Morpho-Agronomic Traits in Kabuli Chickpea Genotypes under Autumn Sowing Condition
Dr Mahdi Geravandi, Dr Farshid Mahmodi, Dr Reza Haghparast, Dr Hamid Hossenian Khoshroo,
Volume 15, Issue 48 (12-2023)
Abstract
Introduction and Objectives: Chickpea is one of the most important grain legumes, which plays significant roles in food security of developing countries and became more important with climate change in recent years. Germplasm characterization for desired traits will help to create efficient breeding populations that are important to achieve particular objectives. Therefore, this research was carried out to (i) investigate the genetic diversity of breeding lines and varieties of Kabuli chickpea under autumn sowing condition, (2) investigate the relationships between morpho-agronomic traits and (3) identify superior genotypes based on multi-traits.
Material and methods: In this research, genetic diversity of 150 chickpea genotypes including 12 Iranian varieties, 4 foreign varieties and 132 breeding lines were investigated for important agronomic traits including phenological traits, plant height and seed yield and its components in the experimental farm of Dryland Agricultural Research Institute (Kermanshah) during two consecutive crop seasons (2019-2020 and 2020-2021). Trials conducted using an Alpha Lattice design with two replications under autumn sowing conditions.
Results: According to the results of combined analysis of variance, there were significant difference between the studied genotypes for all the traits except the seed filling period and seed weight. Results of genotype × trait biplot and genetic correlation analyses showed that number of pod per plant had a positive and significant correlation with seed yield in both cropping seasons. Based on the results of the cluster analysis, the investigated varieties and breeding lines were classified into three and two groups in first and second cropping seasons, respectively. Simultaneous selection of superior genotypes was done for high yield, high seed weight, higher plant height, higher number of pod per plant, early flowering, early maturity and short seed filling period using MGIDI. Genotypes 25, 143, 74, 66, 35 (Azad), 97, 133, 19, 4, 52, 15, 80, 36 (Adel), 40 (Saeed), 108, 22, 86, 106, 141, 99, 98 and 21 were recognized as superior genotypes in the first cropping season, while, genotypes 35 (Azad), 13, 34 (Nosrat), 70, 136, 46, 99, 20, 120, 36 (Adel), 30, 73, 51, 116, 59, 23, 19, 55, 41 (Samin) and 11 were recognized as superior genotypes in the second cropping season. Azad, Adel and genotypes 99 and 19 were identified as superior genotypes in both cropping seasons.
Conclusion: There was significant genetic diversity for traits related to seed yield in the studied germplasm, which allows the selection of superior genotypes. According to the results of this research, the number of pods per plant had an important role in the formation of seed yield in the autumn sowing condition. The superior genotypes identified in this research could be considered as parents of breeding populations in Kabuli chickpea breeding programs for autumn sowing condition of moderate regions.

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