alaa.said

Prof. Alaa A. Said

Professor - Professor at Agronomy department, Faculty of Agriculture, Sohag university

Faculty of agriculture

Address: Nacer city, sohag

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Genome-wide association mapping of genotype-environment interactions affecting yield-related traits of spring wheat grown in three watering regimes.

2022 | Keywords
Genome-wide association mapping of genotype-environment interactions affecting yield-related traits of spring wheat grown in three watering regimes.
Genotype-environment interaction (GxE) has a great impact on wheat physiology, morphology and grain yield (GY). We evaluated an association mapping panel of spring wheat advanced lines for chlorophyll content, canopy temperature (CT), and yield-related traits under three different watering regimes in two consecutive growing seasons. Genome-wide association mapping identified 457 SNPs, with significant effects that varied with the watering regimes ... Read more

Association mapping and candidate genes for physiological non-destructive traits: Chlorophyll content, canopy temperature, and specific leaf area under normal and saline conditions in wheat.

2022 | Keywords
Association mapping and candidate genes for physiological non-destructive traits: Chlorophyll content, canopy temperature, and specific leaf area under normal and saline conditions in wheat.
Wheat plants experience substantial physiological adaptation when exposed to salt stress. Identifying such physiological mechanisms and their genetic control isespeciallyimportanttoimproveitssalttolerance.Inthisstudy,leafchlorophyll content (CC), leaf canopy temperature (CT), and specific leaf area (SLA) were scored in a set of 153 (103 having the best genotypic data were used for GWAS analysis) highly diverse wheat genotypes under control and salt stress. On average, ... Read more

Modeling of phosphorus nutrition to obtain maximum yield, high P use efficiency and low P-loss risk for wheat grown in sandy calcareous soils.

2021 | Keywords
Modeling of phosphorus nutrition to obtain maximum yield, high P use efficiency and low P-loss risk for wheat grown in sandy calcareous soils.
Fertilizationwith high levels of phosphorus increases the risk of environmental pollution. Identification of critical values of P in soil (SOP) and in plant tissues (PiP) is essential for achieving the maximum wheat yield without P loss. The critical value is the value of P which gives the optimum yield; the response of crop yield to P fertilization above this value ... Read more

The effect of saline water magnetization on physiological and agronomic traits of some bread wheat genotypes

2020 | Keywords Magnetic water, saline water, ,
The effect of saline water magnetization on physiological and agronomic traits of some bread wheat genotypes
The present work relates to estimate the effect of magnetically-treated saline water on physiological and agronomic traits of 22 bread wheat genotypes and to determine the changes in soil properties. Replicated pot experiments involving potable water, saline water (2500 and 5000 ppm) and magnetically treated (2500 and 5000 ppm saline water) were conducted in greenhouse during 2017/2018 and 2018/2019 winter ... Read more

A comparison of bread wheat genotypes in various environments using different stability models

2020 | Keywords Stability models, Performance,
A comparison of bread wheat genotypes in various environments using different stability models
Twenty five bread wheat genotypes were tested under eight environments (2 growing seasons×4 water stresses) to study stability and adaptability for physiological and agronomic traits. Analysis of variance showed highly significant variations among all tested genotypes for all studied traits; chlorophyll content, canopy temperature, specific leaf area, spike length, no. of spike/plant, 1000- kernel weight and grain yield. The results ... Read more

Grain Yield Stability of New Bread Wheat Genotypes (Triticum aestivum L.) under Normal and Heat Stress Conditions

2020 | Keywords Bread wheat (T. aestivum L.), ,
Grain Yield Stability of New Bread Wheat Genotypes (Triticum aestivum L.) under Normal and Heat Stress Conditions
FORTY-TWO bread wheat genotypes (Triticum aestivum L.) were evaluated in eight environments in Egypt: two locations and two planting dates during the two 2016-2017 and 2017-2018 growing seasons. The objectives of this study were to estimate grain yield, number of spikes plant-1, 1000-kernel weight and plant height of these 42 bread wheat genotypes under different environments and to determine their ... Read more

Mapping Quantitative Trait Loci Associated with Yield and its Related Traits in Sorghum bicolor

2018 | Keywords QTL mapping, Sorghum biocolor,
Mapping Quantitative Trait Loci Associated with Yield and its Related Traits in Sorghum bicolor
YIELD and its related traits; heading date, hundred kernel weight and kernels number as well as harvest index and biological yield are complex traits that require the concerted action of many genes and are affected by environmental cues. To genetically dissect those traits, 140 recombinant inbred lines (RILs) genotyped with 120 DArT and SSR markers were grown under field conditions ... Read more

Association Mapping For Salinity Tolerance Related Traits in a Structured Barley Population.

2015 | Keywords Barley QTL Salinity,
Association Mapping For Salinity Tolerance Related Traits in a Structured Barley Population.
ASTRUCTURED barley population of 103 wild barley accessionand 19 spring barley cultivars was used to identify quantitativetrait loci (QTLs) for salt tolerance traits by means of an associationmapping approach using 660 DArT markers. In this investigationbarley accession and spring barley cultivars were employed in a twoyeargreenhouse project having a completely randomized designinvolving four irrigation water treatments having different salinitiesand twice ... Read more

Identification of ISSR and RAPD markers linked to yield traits in bread wheat under normal and drought conditions

2015 | Keywords DroughtGenetic diversitySingle,
Identification of ISSR and RAPD markers linked to yield traits in bread wheat under normal and drought conditions
Genetic variability and identification of some molecular markers were studied in twenty promising lines of wheat using agronomic traits, ISSR (inter simple sequences repeats) and RAPD (random amplified polymorphic DNA) markers. Significant variation was evidenced in all agronomic traits. The lines proved to be superior to the check cultivar Sahel1 in yield and its component traits. Lines L2, L7 and ... Read more

EFFECT OF SOME COMMERCIAL BIO-AGENTS ON YIELD AND DAMPING-OFF DISEASE OF WHEAT LINES (Triticum aestivum vulgair L.)

2015 | Keywords Wheat lines, Damping-off, Bio-, wheat, Bio-agents, yield,
EFFECT OF SOME COMMERCIAL BIO-AGENTS ON YIELD AND DAMPING-OFF DISEASE OF WHEAT LINES (Triticum aestivum vulgair L.)
The current study was conducted to assess the possibility of using two bioagents (BAs), Trichoderma harzianum T39 (Trichodex) and Bacillus subtilis (MBI 600) tested at 1, 3 and 5% concentration to control damping-off disease and also their ability to promote yield of wheat lines under field conditions. Seed inoculation with two BAs protected wheat seedlings and highly promoted seed germination. ... Read more