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M. A. Ahmed

Publications (19)

Study the Seed and Oil Yield Stability of Sunflower Hybrids across Environments

M. A. Ahmed, Kh. A. Morad, M. A. Attia & Zeinab E. Ghareeb · Asian Journal of Advanced Research and Reports · 2020

Aims: This study was conducted to investigate the nature of genotypes-environments interaction (GEI) and identify the most stable sunflower hybrids that can give high seed yield with high oil yield under a wide range of environmental conditions in Egypt. Place and Duration of Stu...

Open access Research Article 10.9734/ajarr/2020/v13i230305

Multivariate Analyses of Yield and Its Components in Some Peanut Genotypes

A. Abd El- Saber, Zeinab E. Ghareeb & M. A. Ahmed · Asian Journal of Advances in Agricultural Research · 2020

Aims: For proposing a statistical approach to select of the most promising genotypes for peanut breeding program. Place and Duration of Study: Twenty peanut genotypes were evaluated at Matana Agricultural Station Research, Luxor governorate, Egypt during 2018 and 2019. Study Desi...

Open access Research Article 10.9734/ajaar/2020/v13i430109

Genetic Parameters Controlling Inheritance of Agronomic and Yield Traits of Maize (Zea mays L.) under Elevated Plant Density

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Journal of Advances in Biology & Biotechnology · 2016

The objectives of the present investigation were to determine the type of gene action, heritability and expected genetic advance from selection for agronomic and yield traits of maize under high plant density (HD) stress and low density (non-stress) and to identify the parents th...

Open access Research Article 10.9734/JABB/2016/28413

Screening Criteria and Selection Environment for Tolerance to Elevated Plant Density in Maize (Zea mays L.) Inbreds and Hybrids

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Journal of Advances in Biology & Biotechnology · 2016

Indirect selection would be effective if heritability of the secondary trait is greater than that of the primary trait and genetic correlation between them is strong. The objectives of this investigation were to identify secondary trait(s) for selection of high maize grain yield...

Open access Research Article 10.9734/JABB/2016/28603

Direct vs Indirect Selection for Maize (Zea mays L.) Tolerance to High Plant Density Combined with Water Stress at Flowering

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Journal of Applied Life Sciences International · 2016

Aim: The objectives of this investigation were to identify secondary trait(s) for selection of high maize grain yield under high plant density combined with drought stress at flowering and to identify whether the best selection environment is the optimum or stressed one. Study De...

Open access Research Article 10.9734/JALSI/2016/28582

Numerical and Graphical Diallel Analyses of Maize (Zea mays L.) Agronomic and Yield Traits under Well Watering and Water Deficit at Silking

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Archives of Current Research International · 2016

The objectives of the present investigation were to determine the type of gene action, heritability and expected genetic advance from selection for agronomic and yield traits of maize under water stress and optimum irrigation and to identify the parents that contain favorable gen...

Open access Research Article 10.9734/ACRI/2016/28281

Mean Performance, Heterobeltiosis and Combining Ability of Corn (Zea mays L.) Agronomic and Yield Traits under Elevated Plant Density

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Journal of Applied Life Sciences International · 2016

The objective of this study was to assess performance, heterosis and combining ability parameters and their interrelationships in six maize inbreds and their 15 diallel F1 crosses under different plant densities (D). Three experiments were carried out in each season of 2013 and 2...

Open access Research Article 10.9734/JALSI/2016/28067

Genetic Variance, Heritability and Selection Gain of Maize (Zea mays L.) Adaptive Traits to High Plant Density Combined with Water Stress

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Journal of Applied Life Sciences International · 2016

The objectives of the present investigation were to determine genetic variance components, heritability and expected genetic advance from selection for agronomic traits of maize under water stress at flowering combined with high plant density; 95,200 plants/ha(WS-HD) as compared...

Open access Research Article 10.9734/JALSI/2016/28414

Combining Ability and Heterosis in Corn (Zea mays L.) Grain Quality and Yield Traits under Different Plant Densities

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Journal of Advances in Biology & Biotechnology · 2016

The objective of this study was to assess mean performance, heterosis and combining ability and their interrelationships in six maize inbreds and their 15 diallel F1 crosses under elevated plant density (D). Three experiments were carried out in each season of 2013 and 2014, usin...

Open access Research Article 10.9734/JABB/2016/28127

Secondary Traits and Selection Environment for Drought Tolerance at Flowering in Maize (Zea mays L.) Inbreds and Their F1 Diallel Crosses

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Asian Research Journal of Agriculture · 2016

The objectives of this investigation were to identify secondary trait(s) for selection of high maize grain yield under drought stress conditions and to identify whether the best selection environment is the optimum or stressed one. Diallel crosses among diverse inbreds in toleran...

Open access Research Article 10.9734/ARJA/2016/28552

Interrelationships of Performance, Heterosis and Combining Ability of Corn (Zea mays L.) Crop under Elevated Plant Density Combined with Water Deficit

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Asian Research Journal of Agriculture · 2016

The objective of the present investigation was to test the validity of predictions of GCA and SCA effects from mean performance and/or heterobeltiosis for agronomic and yield traits under elevated plant density (D) combined with water deficit. Six maize inbreds varying in high-D...

Open access Research Article 10.9734/ARJA/2016/28126

Heterosis and Combining Ability of Maize (Zea mays L.) Grain Protein, Oil and Starch Content and Yield as Affected by Water Stress

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Archives of Current Research International · 2016

Information on heterosis and combining ability of available germplasm would help maize breeder in identifying proper genotypes and breeding procedures for improving tolerant varieties to water stress.  The objective of this investigation was to assess the performance, heterobelti...

Open access Research Article 10.9734/ACRI/2016/27508

Useful Heterosis and Combining Ability in Maize (Zea mays L.) Agronomic and Yield Characters under Well Watering and Water Stress at Flowering

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Journal of Advances in Biology & Biotechnology · 2016

Selecting superior parents for hybrid combinations and studying the nature of genetic variation are prerequisites for starting a successful breeding program. The main  objective  of  the present study  was  to assess performance, useful heterosis and combining  ability  among  ma...

Open access Research Article 10.9734/JABB/2016/27507

Differential Responses of Maize (Zea mays L.) Genotypes to Elevated Plant Density Combined with Deficit Irrigation

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Journal of Advances in Biology & Biotechnology · 2016

High plant density and full irrigation along with the use of high density-tolerant genotype would lead to maximizing maize (Zea mays L.) grain productivity per unit land area. The objective of this investigation was to match the functions of optimum plant density and adequate irr...

Open access Research Article 10.9734/JABB/2016/26881

Genotypic Differences in Grain Protein, Oil and Starch Content and Yield of Maize (Zea mays L.) under Elevated Plant Density

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Asian Research Journal of Agriculture · 2016

The use of high plant density (PD) along with tolerant genotypes to high PD would overcome the negative impacts of competition stresses and lead to maximizing maize yield of grain (GYPH), protein (PYPH), oil (OYPH) and starch (SYPH) from the unit land area (ha). The main objectiv...

Open access Research Article 10.9734/ARJA/2016/26730

Maximizing Maize (Zea mays L.) Crop Yield via Matching the Appropriate Genotype with the Optimum Plant Density

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Journal of Applied Life Sciences International · 2016

Aim: The objective of this investigation was to match the functions of optimum plant density to produce the highest possible grain yield per unit area with the greatest maize genotype efficiency. Study Design: A split plot design in randomized complete block arrangement was used...

Open access Research Article 10.9734/JALSI/2016/26811

Quadratic Regression of Grain Protein, Oil and Starch Contents and Yields of Different Maize (Zea mays L.) Genotypes on Elevated Plant Density

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Journal of Advances in Biology & Biotechnology · 2016

The main objective of the present investigation was to identify the optimum plant density for the best performance of grain protein, oil and starch contents and yields of different maize genotypes via quadratic regression functions. Diallel crosses among diverse maize inbreds wer...

Open access Research Article 10.9734/JABB/2016/26692

Influence of Deficit Irrigation at Silking Stage and Genotype on Maize (Zea mays L.) Agronomic and Yield Characters

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · Journal of Agriculture and Ecology Research International · 2016

Maize is considered susceptible to drought stress, when occurs at flowering stage. Thus, the development of drought tolerant maize cultivars is of important priority for plant breeders. The objectives of the present study were: (i) to assess the effect of maize genotype (G), irri...

Open access Research Article 10.9734/JAERI/2016/25438

Grain Protein, Oil and Starch Contents and Yields of Maize (Zea mays L.) as Affected by Deficit Irrigation, Genotype and Their Interaction

A. M. M. Al-Naggar, M. M. M. Atta, M. A. Ahmed & A. S. M. Younis · International Journal of Plant & Soil Science · 2016

The main objective of this investigation was to study the effects of deficit irrigation (I) at flowering stage, genotype (G) and G × I interaction on maize grain quality and yield traits of 6 inbred lines and their 15 diallel crosses. The parents and F1's were evaluated in two se...

Open access Research Article 10.9734/IJPSS/2016/23570