Sayyed Saeid PourdadDryland Agricultural Research Institute Iran · Oilseed crops
Sayyed Saeid Pourdad
PhD
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30
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Publications (30)
Introduction: Barley (Hordeum vulgare L.) is known as the fourth most important grain crop in the world. Drought stress is also one of the main factors that reduce the growth and yield of barley, and grain yield is directly related to the morphological characteristics of the flag leaf..
Materials and methods: In order to identify the main and epist...
Safflower (Carthamus tinctorius L.) is one of the most important oilseed crops for its seed oil rich in unsaturated fatty acids. Precise utilization of diverse genetic resources is fundamental in breeding programs to improve high yield genotypes with desirable traits. In this study, for the first time we report successful application of DArTseq tec...
This study was conducted to estimate broad-sense heritability and variance components for seed yield and some agronomic traits in 100 safflower genotypes. The experiments were carried out in two years at two locations in Iran. The number of seeds per capitol and harvest index had the highest genotypic coefficient of variation (GCV) and phenotypic c...
A population comprising of 118 double haploids of barley derived from a cross, Nure x Tremois was evaluated for different traits for yield and its components under normal and drought stress conditions. Using a genetic map of 543 markers (DArT, SSR, SNP and AFLP), we identified 33 additive quantitative traits loci (QTLs) for phenological and morphol...
Sunflower (Helianthus annuus L.) is an important oilseed crop. It was grown on more than 20 million ha in the world in 1997, of which over one million ha were in West Asia-North Africa (WANA) countries, where Iran grew 60,000 ha and Syria 50,000. There is potential for substantial increase In sunflower area and production on dry land if optimum man...
The evaluation of GE interaction is an important component of the cultivar selection process in multi-environment trials (METs). GGE biplot analysis is an effective method which is based on the principal component analysis (PCA) in order to fully explore METs. The objectives of the present study were first to analyze the GE interaction in the seed...
Genetic diversity and differentiation of 50 Colletotrichum spp. isolates from legume crops studied through multigene loci, RAPD and ISSR analysis. DNA sequence comparisons by six genes (ITS, ACT, Tub2, CHS-1, GAPDH, and HIS3) verified species identity of C. truncatum, C. dematium and C. gloeosporiodes and identity C. capsici as a synonym of C. trun...
Evaluation of genotype × environment interaction (GEI) is an important component of the variety selection process in multi-environment trials. The objectives of this study were first to analyze GEI on seed yield of 18 spine safflower genotypes grown for three consecutive seasons (2008–2011) at three locations, representative of rainfed winter saffl...
Wheat and chickpea are most important crops in dryland farming areas of Iran. Weeds have major impact on chickpea grain yield. This experiment was carried out to increase land use efficiency and weed suppression through intercropping in dryland agricultural research station-Sararood, Kermanshah, Iran during 2008-10. The experimental design layout w...
Safflower (Carthamus tinctorius L.) is a species moderately tolerant to salt stress and is cultivated in dry areas where salinity can be a serious threat. We examined effects of salinity stress on seed oil content and fatty acid composition in 64 safflower genotypes grown under saline and non-saline (control) field experiments in two growing season...
Partitioning of the genotypes by environment interaction (GEI) is important in order to determine the nature of the GEI. The objectives of this study were to assess the presence and nature of GEI for nine agronomic traits of rapeseed cultivars, and to identify cultivars with favorable levels of stable oil production. Nine rapeseed cultivars, includ...
Pourdad, S. S. 2011. Repeatability and relationships among parametric and non-parametric yield stability measures in safflower (Carthamus tinctorius L.) genotypes. Crop Breeding Journal 1(2): 109-118. The occurrence of genotype × environment (GE) interaction has led to the development of several stability parameters that can be used to estimate the...
Genetic variation in twenty safflower (Carthamus tinctorius L.) accessions was characterized by means of agro-morphological traits, random amplified polymorphic DNA (RAPD) and inter-simple sequence repeats (ISSR) markers in order to evaluate. A field trial was conducted to evaluate 17 agro-morphological traits. To study RAPD and ISSR, initially, 53...
Genotype×environment interaction (GEI) is a major factor in the development of stable and high-yielding safflower cultivars under rain-fed conditions. In order to quantify GEI effects on the seed yield of 17 safflower genotypes and to identify stable genotypes, multi-environment yield trials (multi-environment trials (MET)) were conducted for four...
The present investigation was carried out to estimate the interrelationships and repeatabilities of various variability parameters, i.e., genotypic (σ2g) and phenotypic (σ2p) variances, genotypic (GCV) and phenotypic (PCV) coefficients of variation, broad-sense heritability (h
b2), genetic advance (GA), and genetic gain (GG), using data derived fro...
To assess the stability and yield performance of safflower genotypes and to identify subregions within Iran, a set of experiments was conducted at six locations during 2003-2005. AMMI model analysis and some stability parameters derived from the grain yield were used. AMMI analysis showed differences between genotypes and environments and the GE in...
Safflower (Carthamus tinctorius L.) is a native Iranian oilseed crop adapted to various environments in the country. It can be planted as a winter or spring crop. The calculation of drought resistance indices could help us to identify drought-resistant genotypes. To determine these yield-based indices, an investigation was carried out with 16 saffl...
The additive main effect and multiplicative interaction (AMMI) model and the phenotypic stability parameters, ecovalence (W2), regression coefficient (b), coefficient of determination (R2), coefficient of variation (CV), stability variance (S2), AMMI stability value (ASV), and TOP (proportion of environments in which a genotype ranked in the top th...
Safflower (Carthamus tinctorius L.) is a multi-purpose oilseed crop and well adapted to Mediterranean climate. To find out a suitable safflower variety for rainfed conditions a safflower breeding program started at Sararood Dryland Agricultural Research Station in 1998. This program started with screening of germplasm collection then selected genot...
Safflower (Carthamus tinctoius L.) is an Iranian native crop that is adapted to different environmental conditions of this country. Sixteen safflower varieties/lines were spring-planted in 6 research stations including Sararood (Kermanshah), Maragheh, Ghamlo (Kordestan), Khodabandeh (Zanjan), Shirvan (North Khorasan)and Khohdasht (Lorestan) with an...
In this study, some phenotypic stability parameters; ecovalence (W<sup>2</sup><sub>i</sub>), regression coefficient (b<sub>i</sub>), coefficient of determination (R<sup>2</sup><sub>i</sub>), coefficient of variation (CV<sub>i</sub>), stability variance (S<sup>2</sup><sub>i</sub>) AMMI stability value (ASV<sub>i</sub>) and TOP (proportion of environ...
The objectives of this study were to identify of the 16 safflower ( Carthamus spp.) genotypes that have both high and stable yield performance across different environments through apply nonparametric measures and study on the relationship among nonparametric stability statistics. Yield data of the 16 safflower genotypes selected from Iran/ICARDA j...
Sunflower is an important edible oil crop. Its yield on dry lands of West Asia-North Africa is low due to limited rainfall at the time when this crop is in full growth during May-June, thus supplementary irrigation (SI) must be used. However, this region lacks river/canal water and irrigation, when possible, is from underground water storages, whic...
Sunflower (Helianthus annuus L.) is an important oilseed crop. It was grown on more than 20 million hectares in the world in 1997, of which 60,000 ha were in Iran. There is a potential for substantial increase in sunflower acreage and production on dry land in Iran by applying optimum management practices. Two important management considerations ar...
To evaluate seed germination and seedling growth of safflower in moisture stress, germination of 15 genotypes at four water potential levels (ψ: 0, -0.4, -0.8 and –1.2 Mpa) was tested by Polyethylene glycol (PEG6000). Maximum germination (Gmax), germination rate index (GRI), time length to reach 50% germination (T50), rootlet length (RL) and shootl...
The objective of this study was to explore the effect of genotype and genotype x location interaction on the grain yield, data of 20 winter wheat genotypes selected from Iran/ICARDA joint project grown in six locations via GGL (genotype plus genotype x location) biplot methodology. The GGL biplot graphically displays G plus GL of a MET in a way tha...
The objective of present investigation was to study relationship among nonparametric stability statistics. Yield data of 16 safflower genotypes selected from Iran/ICARDA joint project grown in 18 rain-fed environments during 2003-05 in Iran was collected. Experiments were conducted in Randomized Completely Block Design (RCBD) with four replications...