hybrid generation
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2022 ◽  
Vol 46 (1) ◽  
Author(s):  
Almoataz Bellah Ali El-Mouhamady ◽  
Abdul Aziz M. Gad ◽  
Ghada S. A. Abdel Karim

Abstract Background Water stress, specifically the limited water resources needed to grow strategic crops, especially rice, poses a great threat to crop productivity. So, it was imperative that scientists all work together to try genetically improving the rice for drought tolerance in light of these environmental challenges. The aim of this study is trying to know the genetic behavior responsible for water-deficit tolerance in rice genotypes but at the molecular level. Moreover, this attempt will be an important leap in the process of genetic improvement in rice for water stress tolerance in Egypt. Results Twenty-three rice genotypes including eight parents and their fifteen F1 crosses or (the first hybrid generation) by line X tester analysis were evaluated for water stress tolerance during two experiments (the control and drought experiment) besides some molecular–biochemical studies for eight parents and the highest selected five crosses for water stress tolerance. The research revealed that five rice crosses out of fifteen hybrids were highly tolerant to water stress compared to the normal conditions. Data of biochemical markers indicated the presence of bands that are considered as molecular genetic markers for water-deficit tolerance in some rice genotypes, and this is the scientific progress achieved in this research. This was evident by increasing the density and concentration of SDS-protein electrophoresis besides enhancing the activities of peroxidase (POD) and polyphenol oxidase (PPO) under water-deficit conditions, which confirmed the tolerance of drought stress in the eight rice genotypes and the best five crosses from the first hybrid generation. Conclusion The five promising and superior rice hybrids showed an unparalleled tolerance to water stress in all evaluated traits under water stress treatment compared to the standard experiment. Also, biochemical and molecular parameters evidence confirmed the existence of unquestionable evidence that it represents the main nucleus for producing rice lines tolerated for drought stress under Egyptian conditions.


2021 ◽  
Vol 15 ◽  
pp. 102-109
Author(s):  
Mourad Tiar ◽  
Achour Betka ◽  
Ridha Cheikh ◽  
Said Drid

This paper discusses a comprehensive supervisor control for a hybrid system that comprises the photovoltaic generation , hydrogen system ( Fuel cell ,Electrolyse ) and an ac load is developed in this paper. The objectives of the supervisor control are, primarily, to satisfy the load power demand and, second, allows to store the gas through the electrolyser. For these purposes, the supervisor controller determines the operation mode online of the solar generation subsystem , switching from power regulation to maximum power conversion . Decision criteria for the supervisor based on measurable system variables are presented (voltages, and currents) . Finally, the performance of the supervisor controller is extensively assessed through computer simulation using a comprehensive nonlinear model .


2021 ◽  
pp. 657-668
Author(s):  
Sarang A. Khadtare ◽  
Boni Satya Varun Sai ◽  
Debashis Chatterjee
Keyword(s):  

2021 ◽  
Author(s):  
Jonathan Acosta ◽  
Mauricio Rodriguez ◽  
Carlos Alvarez ◽  
Diego Arcos-Aviles ◽  
Michelle Herrera ◽  
...  

2021 ◽  
pp. 129205
Author(s):  
Jianhua Jiang ◽  
Bo Ming ◽  
Qiang Huang ◽  
Jianxia Chang ◽  
Pan Liu ◽  
...  

2021 ◽  
Vol 7 (9) ◽  
pp. 116-124
Author(s):  
V. Salimov ◽  
M. Guseinov M ◽  
R. Asadullaev ◽  
Kh. Nasibov ◽  
A. Guseinova

Research work carried out at the Azerbaijan Scientific Research Institute of Viticulture and Winemaking on the creation of new grape varieties that meet the requirements of crop production and are distinguished by high productivity and quality, resistance to biotic and abiotic factors, are of great relevance. The article describes the ampelographic features of new hybrid varieties, as well as the patterns of inheritance of properties and traits and the manifestation of dominance and heterosis in seedlings of the hybrid generation, created by selection in Azerbaijan Scientific Research Institute of Viticulture and Winemaking and its experimental farms. The results of the study and comparative analysis of the morphological, biological and economic-technological features of several hybrid varieties are presented, as well as a digital description of the traits and properties of genotypes, based on the use of ampelodescriptors of the International Organization of Vine and Wine (OIV).


2021 ◽  
Vol 19 ◽  
pp. 429-434
Author(s):  
Wolf-Gerrit Früh ◽  
◽  
Jamie Hillis ◽  
Sandy Gataora ◽  
Dawn Maskell

This paper presents an analysis of providing a typical distillery with low carbon energy through the combination of local wind energy, solar PV, electricity storage and heat storage. The aim of this is to increase the sustainability of the energyintensive whisky industry. Using hourly local renewable resource data and typical distillery consumption information, the local energy generation is balanced against the demand at the time of use. This followed by load shifting using a battery and heat storage. Results show that significant carbon savings can be achieved by a carefully designed portfolio of hybrid generation, battery storage and heat storage.


2021 ◽  
Vol 13 (16) ◽  
pp. 9355
Author(s):  
Aleksandr Kulikov ◽  
Aleksey Loskutov ◽  
Andrey Kurkin ◽  
Andrey Dar’enkov ◽  
Andrey Kozelkov ◽  
...  

At the present stage of electric power industry development, special attention is being paid to the development and research of new efficient energy sources. The use of hydrogen fuel cells is promising for remote autonomous power supply systems. The authors of the paper have developed the structure and determined the optimal composition of a hybrid generation system based on hydrogen fuel cells and battery storage and have conducted studies of its operating modes and for remote consumers’ power supply efficiency. A simulation of the electromagnetic processes was carried out to check the operability of the proposed hybrid generation system structure. The simulation results confirmed the operability of the structure under consideration, the calculation of its parameters reliability and the high quality of the output voltage. The electricity cost of a hybrid generation system was estimated according to the LCOE (levelized cost of energy) indicator, its value being 1.17 USD/kWh. The factors influencing the electricity cost of a hydrogen generation system have been determined and ways for reducing its cost identified.


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