Reza Mohammadi

Reza Mohammadi
Dryland Agricultural Research Institute · Cereal research department

PhD

About

160
Publications
23,826
Reads
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2,455
Citations
Additional affiliations
November 2000 - February 2016
Dryland Agricultural Research Institute of Iran
Position
  • Research Associate
November 2000 - February 2016
Dryland Agricultural Research Institute of Iran
Position
  • Research Associate
October 2000 - present
Dryland agricultural research institute
Position
  • Research Associate

Publications

Publications (160)
Article
Full-text available
Introduction: Assessment of the genetic diversity of crops is vital to plant breeding and heritage conservation programs. Genetic diversity in plant species is important for selecting the right parents for hybridization and producing suitable offspring. The genetic diversity of durum wheat compared to other crops has decreased significantly during...
Article
Full-text available
Drought tolerance and grain yield stability are among the most important aspects in adaptation and successful performance of rainfed winter bread wheat cultivars. The main objectives of this study were (i) to assess the effectiveness of drought tolerance indices for the selection of drought-tolerant winter bread wheat genotypes, and (ii) to identif...
Article
Full-text available
Expanding the genetic basis of modern wheat cultivars may improve yield stability and increase grain yields under climatic changes, to feed the growing human population. The main objective of this study was to evaluate the potential for incorporation into a durum wheat breeding program of 64 accessions of tetraploid wheats from six sub-species of T...
Article
Full-text available
Conservation agriculture (CA) is becoming increasingly attractive to farmers due to advantages such as lower production costs and less destruction of soil structures compared to the conventional tillage. The cultivars introduced for the conventional systems may not be suitable under CA environments, and newly adapted cultivars need to be developed....
Article
In this study, the effect of climate change on planting date and growth duration of rainfed wheat in the west and northwest parts of Iran has been investigated. The occurrence of climate change in the region was first evaluated for the base period (1992–2018) using two nonparametric tests of Mann–Kendall and Sen's slope estimator. Then, the climati...
Article
Full-text available
An enhanced level of drought tolerance in wheat (Triticum spp.) may be reached through combining agronomic and physiological traits associated with grain yield under drought conditions. We aimed to explore valuable diversity for the drought tolerance, existed in the core collection of Iranian spring bread wheat landraces. A number of 206 spring bre...
Article
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Growing concerns for food security and alleviation of hunger necessitate knowledge-based crop management technologies for sustainable crop production. In this study 13 winter bread wheat genotypes (old, relatively old, modern, and breeding lines) were evaluated under three different tillage systems, i.e., conventional tillage (CT; full tillage with...
Article
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Crop cultivar performance is a result of combined effects of genotype, environment and genotype × environment (G × E) interaction. To effectively generate reliable estimates of crop yield the magnitude and patterns of G × E in regional yield trials should be specified. This research aimed to (1) investigate existing possible mega-environments (ME)...
Article
Durum wheat (Triticum turgidum) with an average annual production of 40 million tons, is the tenth most important and common crop grown worldwide. There is a significant lack of information on the genetic structure and gene pool of durum wheat. Few scientific studies have described the genetic diversity of landrace durum wheat cultivars of Iran and...
Article
Full-text available
The expansion of conservation agriculture (CA) requires an immediate attention on targeted breeding for the next generation of wheat cultivars that are adapted to CA system and maintain their productivity under severe drought conditions in unpredictable Mediterranean environments. In this study, eight released bread and durum wheat cultivars, diffe...
Article
A collection of 220 durum wheat breeding germplasms, originating from ICARDA and CIMMYT breeding programs, was assessed to explore phenotypic and genotypic diversity and to identify informative molecular markers for several agro-physiological traits under drought conditions for two cropping seasons (2017–2018, 2018–2019). A large phenotypic diversi...
Article
Fourteen promising durum wheat lines, representing the elite durum germplasm for rainfed conditions, along with three check cultivars were assessed under drought and irrigated conditions for three growing seasons. The main objectives were to (i) evaluate the agronomic performance of durum wheat genotypes under different moisture stress conditions (...
Article
There has been a significant trend in the use of different statistical tools to analyse genotype × environment (GE) interaction for grain yield in multi‐environment trials. Several statistical models including 16 univariate stability methods and four multivariate models such as the additive main effects and multiplicative interaction (AMMI), GGE bi...
Article
The evaluation of genetic diversity in a gene pool contributes to the effective selection of genotypes and truncates the breeding time. In the present study, 96 durum wheat genotypes were evaluated for (1) genotypic diversity using two DNA marker systems: CAAT box-derived polymorphism (CBDP) and inter-simple sequence repeats (ISSR) markers and (2)...
Article
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Durum wheat performance in the Mediterranean climate is limited when water scarcity occurs before and during anthesis. The present research was performed to determine the effect of drought stress on several physiological and agro-morphological traits in 17 durum wheat genotypes under two conditions (control and drought) over two years. The results...
Article
Climate variability and associated droughts are major environmental factors limiting crop productivity worldwide. Identification and better understanding of factors influencing genotype × environment (GE) interaction in drought-prone environments will allow breeders and producers to improve crop productivity. The objectives of this study were to id...
Article
Full-text available
In order to evaluate the productivity potential of some barley varieties and promising lines under no-till condition an experiment was conducted in cold (Sonqor) and warm (Sarpol-e Zahab) dryland regions of Kermanshah province during 2017-18 cropping season. In the cold condition, seven winter genotypes and in the semi-warm condition seven spring g...
Article
The objective of this experiment was to analyze genotype × environment (GE) interaction for grain yield of 20 durum wheat genotypes to identify the yield stability and adaptability of genotypes using GGE biplot method as well as some univariate stability statistics. The genotypes were evaluated in three rainfed stations of Sararood (Kermanshah), Ma...
Article
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 3...
Conference Paper
Full-text available
The field trials were conducted on selected durum genotypes with known performance under rainfed conditions to: (i) investigate for the morpho-physiological traits that could most explain drought tolerance and (ii) identify those that would produce high and stable grain yield across drought conditions from mild to severe conditions. Combined analys...
Article
In this study, in order to display the crop capacity and production potential of durum wheat breeding lines and internal and external cultivars to farmers and identifying the best adapted genotypes under no-tillage condition, 26 durum wheat genotypes along with two local bread wheat cultivars as checks were evaluated at inovation platform of Iran-I...
Article
Full-text available
Climate variability and associated droughts are major environmental factors limiting crop productivity worldwide. Identification and better understanding of factors influencing genotype × environment (GE) interaction in drought-prone environments will allow breeders and producers to improve crop productivity. The objectives of this study were to id...
Conference Paper
Full-text available
Wheat is one of the most important crops worldwide. in recent decades, climate changes have complicated the prediction of drought frequency and extent in the Mediterranean basins. More genetic sources are needed for developing new cultivars tolerant to adverse environmental conditions allowing a sustainable increase in wheat production. To identify...
Conference Paper
Wheat is one of the most important crops worldwide. In recent decades, climate changes have complicated the prediction of drought frequency and extent in the Mediterranean basins. More genetic sources are needed for developing new cultivars tolerant to adverse environmental conditions allowing a sustainable increase in wheat production. To identify...
Article
Breeding for drought tolerance using novel genetic resources possessing relevant agronomic and adaptive traits is a key to enhance productivity and food security in wheat growing areas. Herein, the main objectives were (i) to use a combination scoring index (multiple scoring index, (MSI)) for selection of durum wheat genotypes under different droug...
Article
Zahab is a durum wheat (Triticum turgidum L. var. durum) cultivar developed by the Dryland Agricultural Research Institute (DARI), Iran, and released in 2017 for cultivation in moderate cold and warm rainfed areas of Iran. This line was selected from the international yield trial (IDYT06-DCA) supplied by the International Center for Agricultural Re...
Article
Full-text available
Knowledge of agro-physiological traits associated with drought tolerance would be useful for developing breeding materials for drought-prone environments. This study was conducted (i) to estimate genetic variability among 25 durum wheat genotypes in response to drought based on grain yield and 15 agro-physiological traits in single and multi-year t...
Article
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In the present study, efficiency of the artificial neural network (ANN) method to identify the best drought tolerance indices was nvestigated. For this purpose, 25 durum genotypes were evaluated under rainfed and supplemental irrigation environments during two consecutive cropping seasons (2011–2013). The results of combined analysis of variance (A...
Article
Full-text available
Introduction: Durum wheat (Triticum turgidum var. durum) is grown for human consumption, mainly as pasta products, e.g., spaghetti and macaroni, couscous, bulgur, frike, flat breads, etc. Worldwide, the area annually planted to durum wheat is estimated to be around 17-18 million hectares, i.e., 8 percent of total wheat area, with a production avera...
Article
Drought is the major cause of durum wheat yield losses in the Mediterranean and many other regions where the crop is not normally irrigated. Over three years (2010–13), 24 durum wheat genotypes representing diverse genetic materials were tested under drought and irrigated conditions. The main objectives were to assess the degree of genotypic variat...
Article
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Plant ecotypes represent heterogeneous, local adaptation of domesticated species and thereby provide genetic resources that meet current and new challenges for farming in drought-prone environments. A total of 536 Sardari bread wheat ecotypes, assembled from different geographical regions of Iran, were studied under rainfed cold conditions for thre...
Article
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Drought, being a yield-limiting factor, has become a major threat to international food security. It is a complex process, and drought tolerance response is carried out by various genes, transcription factors, microRNAs, hormones, proteins, co-factors, ions and metabolites. This complexity has limited the development of crop cultivars for drought t...
Article
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Progress in plant molecular tools has been resulted in the development of gene-targeted and functional marker systems. CAAT box region is a different pattern of nucleotides with a consensus sequence, GGCCAATCT, which situated upstream of the start codon of eukaryote genes and plays an important role during transcription. In the present study, sever...
Article
The knowledge of key traits contributing to stress tolerance could contribute to increasing the efficiency of the selection process leading to development of drought tolerant genotypes. Over three years (2010-13), 25 durum wheat genotypes were evaluated for different agro-physiological traits under drought conditions. Four statistical procedures in...
Article
Full-text available
Genotype × environment interactions make it difficult to release high yielding durum varieties for diverse environmental conditions. The main purpose of this study was to achieve high yielding durum wheat genotypes with higher yield stability in different environmental conditions, tolerance to environmental stresses such as cold damage, terminal dr...
Article
Full-text available
Durum wheat is important cereal that is widely cultivated all over the world. In this study, genetic diversity in a mini core collection of the 43 durum wheat genotypes (including 25 breeding lines and 18 landraces) was investigated using fifteen inter-simple sequence repeat markers (ISSR). Based on the results, high levels of polymorphism (98.70%)...
Article
Full-text available
Genotype × environment interactions make it difficult to release high yielding durum varieties for diverse environmental conditions. The main purpose of this study was to achieve high yielding durum wheat genotypes with higher yield stability in different environmental conditions, tolerance to environmental stresses such as cold damage, terminal dr...
Article
Durum wheat ( Triticum durum ) is one of the most important cereal crops in the Mediterranean region; however, its cultivation suffers from low yield due to environmental constrains. The main objectives of this study were to (i) assess genotype × environment (GE) interaction for grain yield in rainfed durum wheat and to (ii) analyse the relationshi...
Article
The main objective of this study was to compare the several statistical models, i.e., joint regression analysis (JRA), additive main effect and multiplicative interaction (AMMI) and genotype and genotype × environment (GE) interaction (GGE) biplot, for analyzing of GE interaction for grain yield of rainfed safflower multi-environment trials. The ef...
Conference Paper
Full-text available
Among the Mediterranean ecosystems with exceptionally high number of endemic plant, Iran presents a great diversity of environments and is well known for its rich diversity of durum wheat (T. turgidum L. var. durum). The knowledge about the extent of variability, the distribution and the relationship between descriptors within local germplasm colle...
Conference Paper
Full-text available
Durum wheat occupies about 300,000 ha mainly in warm and semi-warm areas of Iran. In spite of the importance of durum for Iranian rural economies and pasta industry, the country has not all succeeded in its research and development efforts to substantially improve durum productivity. The combinations of increasing demand for durum and durum product...
Article
A multi-year trial was conducted to compare the effects of genotype, year and genotype × year (G×Y) interactions for grain yield and several drought-adaptive traits of 25 wheat genotypes during five seasons (2005–2010). Four conventional stability statistics, covering a wide range of stability concepts (Types 1–4), and the additive main effect and...
Article
Full-text available
Introduction: Durum wheat (Triticum turgidum L. var durum) makes up only 5% of the world`s total cultivated wheat area and contributes about 10 % to the total global wheat production. In recent years, the production level of durum wheat has risen to more than 30 million tons with EU, USA and Canada together representing 60% of the production. Durum...
Chapter
Dryland agriculture is practiced in almost all hydro-climatic zones, and can be highly productive. A substantial increase in yields of various crops has been achieved during last few decades as a result of release of many input responsive varieties. Several crops have reached maximum potential, however, most of this work has been done for irrigated...
Article
Full-text available
Objectives of this study were to assess durum wheat genotypes for drought tolerance and to study relationships among different drought tolerance indices under different drought stress conditions. The total of twenty-two durum wheat lines was evaluated in a RCBD experiment with three replications for three cropping seasons (2008-2009; 2009-2010 and...
Article
Full-text available
Durum wheat (Triticum turgidum var. durum) is one of the most important cereal crops widely cultivated all over the world with high economic value. In the present study, genetic variation in a mini-core collection of durum wheat germplasm, including 25 breeding lines and 18 landraces, was evaluated using 15 inter-simple sequence repeat (ISSR) and s...
Article
Full-text available
Several yield-based drought tolerance indices are in use, but their efficiencies are not well documented in plant breeding programs. I therefore examined the repeatability, similarity and accuracy of these indices under different levels of drought stress (mild, moderate, severe) in durum wheat. In a 4-year experiment (2007–2010) 24 durum genotypes...
Article
Study of rainfed wheat production in Kermanshah province, Iran, during 1984-2013 indicates no clear trend in yield increasing, while rainfed wheat yield varied between 600 to 1400 kg/ha in this period. Assessment of attainable and actual yields, identify the yield gaps, limiting factors involved in achieving attainable yield and develop suitable st...
Chapter
The genotype x environment (GE) interaction is a major challenge to plant breeders as it complicates testing and selection of superior genotypes and consequently reduces gains from selection. This chapter introduces and compares different statistical models to handle GE interaction by applying them to the durum wheat breeding program in Iran as an...
Article
Several rank-based stability statistics are in use, but little information is available on their repeatability and accuracy. The main objective was to examine the repeatability, similarity and accuracy of the estimates of mean yields and 10 rank-based stability statistics calculated from 25 rainfed durum wheat genotypes grown in 21 diversified rain...
Article
Full-text available
This study was investigated to analyze genotype x environment (GE) interactions for grain yield and its components and to investigate the mechanism by which the stability of grain yield is achieved in rainfed durum wheat. 24 durum wheat genotypes (breeding lines, old and new varieties) along with one old bread wheat cultivar were tested in 21 diver...
Article
This research was undertaken to study genetic diversity among 25 wheat genotypes (21 durum wheat breeding lines, two durum wheat landraces Zardak and Gerdish, Saji durum wheat cultivar and Sardari bread wheat landrace) based on agro-physiological traits under rainfed conditions in research farm of Dryland Agricultural Research Sub-Institute (Sararo...
Article
Full-text available
Clustering genotype × environment (GE) interactions and understanding the causes of GE interactions are among the most important tasks in crop breeding programs. Pattern analysis (cluster and ordination techniques) was applied to analyze GE interactions for grain yield of 24 durum wheat (Triticum turgidum L. var. durum) genotypes (breeding lines an...
Article
Full-text available
Biotic and abiotic stresses are major limiting factors for high crop productivity worldwide. A landrace collection consisting of 380 durum wheat (Triticum turgidum L.) entries originating in several countries along with four check varieties were evaluated for biotic stresses: yellow rust (Puccinia striiformis Westendorf f. sp. tritici) and wheat st...
Article
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Abiotic stresses such as cold and drought are major limiting factors of durum wheat production in the highlands of Iran. A total of 641 tetraploid wheat (Triticum turgidum L.) accessions, selected from wheat collections conserved at ICARDA gene-bank, were evaluated under rainfed conditions at three highland research stations in cold and moderately...
Article
Rainfall and temperature are unpredictable in Mediterranean environments, which results in inconsistent environmental conditions for crop growth and a critical source of uncertainty for farmers and growers. The objectives of the present study were to: (i) quantify and compare the plasticity of durum breeding lines, a modern cultivar and landraces o...