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Full-Text Articles in Life Sciences
Modeling Grain Yield And Straw Yield Of Wheat Using Back Propagation And Genetic Algorithm, Omar Maghawri Ibrahim Hassan Dr.
Modeling Grain Yield And Straw Yield Of Wheat Using Back Propagation And Genetic Algorithm, Omar Maghawri Ibrahim Hassan Dr.
Dr. Omar Maghawri Ibrahim
The first objective of this study was to model the effect of yield components, number of grain/spike, number of spikes/m2, and 1000 kernels weight on the grain yield and straw yield of wheat. An artificial neural network (ANN), multilayer perceptron feed forward neural network (MLP) was used for developing the predictive model. Two different training algorithms: back propagation (BP) and genetic algorithm (GA) were used to train the MLP which structured of three neurons in the input layer, one hidden layer of six neurons, and two neurons in the output layer. The second objective of the current study was to …
Influence Of Nitrogen Fertilizer And Foliar Application Of Salicylic Acid On Wheat, Omar Maghawri Ibrahim Hassan Dr.
Influence Of Nitrogen Fertilizer And Foliar Application Of Salicylic Acid On Wheat, Omar Maghawri Ibrahim Hassan Dr.
Dr. Omar Maghawri Ibrahim
Two cemented plots experiments were carried out during the winter seasons of 2012/2013 and 2013/2014, Soil Salinity Laboratory, Alexandria, Egypt, to study the effect of three levels of salicylic acid (SA) (0, 50, 100 ppm) and three rates of nitrogen fertilizer (75, 100, 125 kg N/feddan) on yield and yield components of wheat (Sakha 93). The experimental design was split plot with four replicates. The results indicated that increasing nitrogen fertilizer rates resulted in significant increase in plant height (cm), number of grain/spike, number of spikes/m2, 1000 grain weight (gm), grain yield (gm/plot), straw yield (gm/plot), and biological yield (gm/plot). …
Performance Assessment Of Some Flax (Linum Usitatissimum L.) Varieties Using Cluster Analysis Under Sandy Soil Conditions, Omar Maghawri Ibrahim Hassan Dr.
Performance Assessment Of Some Flax (Linum Usitatissimum L.) Varieties Using Cluster Analysis Under Sandy Soil Conditions, Omar Maghawri Ibrahim Hassan Dr.
Dr. Omar Maghawri Ibrahim
To assess the performance and the variability of 49 flax varieties based on agronomic parameters using cluster analysis, a field experiment was conducted in 2011/2012 and 2012/2013 winter seasons at the farm of the National Research Center at Nubria district, Albehira Governorate, Egypt. The results revealed high significant difference among all flax varieties in all the studied characters. Letwania-9 and Evelen cultivars surpassed all other varieties in seed and oil yields/ fed. On the other hand, D variety gave the lowest value of seed yield/fed and F variety gave the lowest values of oil% and oil yield/fed. While, G Variety …
Simulation Of Barley Grain Yield Using Artificial Neural Networks And Multiple Linear Regression Models, Omar Maghawri Ibrahim Hassan
Simulation Of Barley Grain Yield Using Artificial Neural Networks And Multiple Linear Regression Models, Omar Maghawri Ibrahim Hassan
Dr. Omar Maghawri Ibrahim
Developing models for simulation of barley grain yield is important for making early prediction. To simulate barley grain yield, a simple and advanced modeling techniques were used based on a field experiment that was conducted using 40 foreign barley genetic resources from 2007/08 to 2008/09 winter seasons at Kalubia Governorate, Egypt. The barley genotypes were imported from International Center for Agricultural Research in Dry Areas (ICARDA), Syria. Artificial neural network (ANN) and multiple linear regression (MLR) models were developed to simulate barley grain yield. The models were constructed using the first year of field data and validated with the second …
Genetic Diversity Assessment Of Barley (Hordeum Vulgare L.) Genotypes Using Cluster Analysis, Omar Maghawri Ibrahim Hassan
Genetic Diversity Assessment Of Barley (Hordeum Vulgare L.) Genotypes Using Cluster Analysis, Omar Maghawri Ibrahim Hassan
Dr. Omar Maghawri Ibrahim
A set of 40 barley genetic resources consists of 39 foreign and 1 domestic origin were tested in 2007/08 and 2008/09 winter seasons at the Agricultural Experimental Station of National Research Centre, Shalakan, Kalubia Governorate, Egypt, to assess the variability of the genotypes or the genetic diversity based on agronomic parameters using cluster analysis. Barley genotypes were imported from International Center for Agricultural Research in Dry Areas (ICARDA), Allepo, Syria due to (ITYN, 04/2005), CIMMYT/ICARDA. The results revealed that the genotypes significantly differed from each other in the studied characters. Regarding the plant height, the genotypes no. 107 and 112 …
Screening Of 40 Triticale (X Triticosecale Wittmack) Genotypes Under Sandy Soil Conditions, Omar Maghawri Ibrahim Hassan
Screening Of 40 Triticale (X Triticosecale Wittmack) Genotypes Under Sandy Soil Conditions, Omar Maghawri Ibrahim Hassan
Dr. Omar Maghawri Ibrahim
No abstract provided.