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  • 1
    Keywords: Botany. ; Agriculture. ; Genetics. ; Biotechnology. ; Plant Science. ; Agriculture. ; Genetics and Genomics. ; Biotechnology.
    Description / Table of Contents: Chapter 1: Breeding Field Crops – History, Current Status And Introspections -- Chapter 2: Wheat Breeding -- Chapter 3: Rice Breeding -- Chapter 4: Maize Breeding -- Chapter 5: Barley Breeding -- Chapter 6: Pearl Millet Breeding. Chapter 7: Sorghum Breeding. Chapter 8: Small Millets Breeding -- Chapter 9: Sugarcane Breeding -- Chapter 10: Jute Breeding -- Chapter 11: Cotton Breeding -- Chapter 12: Maintenance Breeding Of Pusa Basmati Varieties -- Chapter 13: Maintenance Breeding -- Chapter 14: Efficient Breeding Of Crop Plants -- Chapter 15: Brassica Breeding -- Chapter 16: Groundnut Breeding -- Chapter 17: Soybean Breeding -- Chapter 18: Castor Breeding -- Chapter 19: Sunflower Breeding -- Chapter 20: Chickpea Breeding -- Chapter 21: Pigeonpea Breeding -- Chapter 22: Mungbean Breeding -- Chapter 23: Urdbean Breeding -- Chapter 24: Lentil Breeding -- Chapter 25: Fieldpea Breeding -- Chapter 26: Lathyrus Breeding.
    Abstract: This book is an advanced textbook and a reference book for the post-graduate plant-breeding students and the plant breeders. It consolidates fundamental concepts and also the latest advances in plant-breeding practices including development in crop genomics. It contains crop wise explanation on origin, reproduction, genetics of yield contributing traits, biotic and abiotic stresses, nutritional improvement and crop specific plant-breeding procedures and techniques. The chapters are planned to describe crop-focused breeding procedure for the major crop plants as per their economic importance. The recent developments in breeding of field crops have been reported. The recent progress made in mapping traits of economic importance has been critically reviewed for each crop. The progress made in markers assisted selected in few crops has been summarized. This book bridges the knowledge gap and bring to the researchers and students information on modern breeding tools for developing biotic and abiotic stress tolerant, climate resilient and micronutrient rich varieties of field crops. The chapters in book are contributed by experienced Plant Breeders.
    Type of Medium: Online Resource
    Pages: XIV, 1389 p. 109 illus., 98 illus. in color. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9789811692574
    DDC: 580
    Language: English
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  • 2
    Keywords: Agriculture. ; Agricultural biotechnology. ; Plant diseases. ; Agronomy. ; Agriculture. ; Agricultural Biotechnology. ; Plant Pathology. ; Agronomy.
    Description / Table of Contents: Part 1 Paradigm shifts in disease management -- 1 Wheat rust research-shifting paradigms globally -- 2 Forecasting of Wheat Diseases: Insights, Methods and Challenges -- 3 Leaf blight disease of wheat and barley-Past present and future -- 4 Smut and bunt diseases of Wheat: Biology, Identification and Management -- 5 Powdery mildew of wheat: Research progress, Opportunities and Challenges -- 6 Antimicrobial agents for wheat disease: Mode of action and its application -- 7 Integrated Management of Barley Diseases: Current Status and Future Research Priorities -- 8 Viral diseases of wheat: Research Progress and future perspectives -- Part 2 Innovations in entomology and nematology research -- 9 Biology and management strategies of major insect-pests of wheat -- 10 Technological Innovations for the Management of Insect-pests in Stored Grains -- 11 Modern Approaches for the Management of Cereal Cyst Nematodes in Wheat and Barley -- 12 Nanotechnology for wheat and barley health management: Current scenario and future prospectus -- Part 3 Expanding horizons in resource management -- 13 Integrated Management Practices for incremental wheat productivity -- 14 Improved Agronomic Practices for Enhancing the Resource Use Efficiency and Productivity of Wheat and Barley.-15 Efficient irrigation water management in rice-wheat cropping system -- 16 Fertilizer consumption in wheat production systems: Trends and Policies -- 17 Technical Efficiency in Indian Wheat Production: Regional Trends and Way Forward -- 18 Frontier Mechanization Technologies for Wheat Based Cropping Systems -- 19 Innovative pathways to increase resource conservation and nutrient use efficiency in rice-wheat cropping systems for food security and decreased environmental footprints -- 20 Integrated Weed Management in Wheat and Barley: Global perspective -- 21 Agroforestry for Sustainable Cereal based Cropping Systems in Indo-gangetic Plain Region. .
    Abstract: This book discusses the research progress on pathology, entomology, nematology, and resource management of wheat and barley crops. The volume summarizes the research progress and discusses the future perspectives based on current understanding of the existing issues and advancing cutting-edge technologies in the field. The book aims to help in deciding future research and development agenda by devising better strategies and techniques to cultivate these crops under clean and sustainable environment. Through this book an international group of leading wheat and barley researchers unveil the emerging concepts and issues related to biotic stresses and resource management and offers latest glimpses of technological needs and resource optimization in wheat and barley production system. Also, key topics such as frontier mechanization technologies, improved precision farming techniques, pluralistic extension and policy interventions for enhancing the resource efficiency and livelihood security of the farmers are explored here. This book is of interest to teachers, researchers, molecular breeders, cereal biochemists and biotechnologists, policymakers and professionals working in the area of wheat and barley research, food and cereal industry. Also, the book serves as an additional reading material for undergraduate and graduate students of agriculture and food sciences. National and international agricultural scientists, policy makers will also find this book to be a useful read. Volume 1 of New Horizons in Wheat and Barley Research covers global trends, breeding and quality enhancement.
    Type of Medium: Online Resource
    Pages: XXI, 637 p. 1 illus. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9789811641343
    DDC: 630
    Language: English
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  • 3
    Online Resource
    Online Resource
    Cham :Springer International Publishing :
    Keywords: Botany. ; Genetics. ; Biotechnology. ; Agriculture. ; Plant Science. ; Genetics and Genomics. ; Biotechnology. ; Agriculture.
    Description / Table of Contents: Biosystematics and Botanical Descriptions of Seabuckthorn (Hippophae Sp.) in India -- Genetic Diversity, Evolution and Biogeography of Seabuckthorn -- Current Status of Chromosome-based Gender Determination in Seabuckthorn -- Analytical Techniques for the Biochemical Profiling in Seabuckthorn -- Effect of Processing and Storage on Seabuckthorn Products -- Metabolomic Diversity of Seabuckthorn Collections from Different Geographical Regions -- Deciphering the Proteomes and Nanotechnological Potential of an Unexplored Plant Seabuckthorn -- Biotechnological Approaches for Seabuckthorn Improvement -- Repertoire of Molecular Markers and their Applications in Seabuckthorn -- Barcoding-based Identification of Hippophae species -- Transcriptome Sequencing and Analysis of Seabuckthorn (Hippophae Sp.) -- Mining of Microsatellites and Transcription Factors in Seabuckthorn (Hippophae Sp.) Transcriptomes -- Frankia – The Endo-micro-symbiont of Hippophae Sp -- Medicinal and Nutraceutical Properties of Seabuckthorn -- Molecular and Cellular Mechanisms of the Anti-oxidative Activity of Seabuckthorn (Hippophae rhamnoides L.) -- Knowing More About Seabuckthorn (Hippophae rhamnoides)- A Promising Source of Safe and Effective Medical Radiation Countermeasure -- Methods in Seabuckthorn Breeding -- Global Distribution of Seabuckthorn (Hippophae Sp.) Resources and their Utilization .
    Abstract: This work is the first compilation of comprehensive deliberations on botany, cytogenetics and sex determination, genetic resources and diversity, classical breeding, molecular markers and genome sequence resources, and application of omics technology including transcriptomics, proteomics, and metabolomics resources in the multipurpose medicinal plant seabuckthorn. The book also presents a detailed narrative on antioxidative, radioprotective nutraceutical, and medicinal applications of seabuckthorn products. A detailed treatment has been included on analytical techniques and processing technologies. Altogether, the book contains about 300 pages over 17 chapters contributed by globally reputed experts on the relevant field in this important plant species. This book will be useful to the research students, teachers, and scientists in the academia and private sector engaged in horticulture, genetics, breeding, molecular biology, biotechnology, and breeding. The book will also be a useful source for workers involved in the development of plant-based medicines, nutraceuticals, therapeutics, and cosmeceuticals and extension workers involved in the development of rural farmers and small-scale industries.
    Type of Medium: Online Resource
    Pages: XXIX, 368 p. 74 illus., 63 illus. in color. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9783031112768
    Series Statement: Compendium of Plant Genomes,
    DDC: 580
    Language: English
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  • 4
    Keywords: Plant genetics. ; Genetics. ; Agriculture. ; Molecular genetics. ; Plant anatomy. ; Plant Genetics. ; Genetics and Genomics. ; Agriculture. ; Molecular Genetics. ; Plant Anatomy and Morphology.
    Description / Table of Contents: Preface -- 1. Principle and practices of Genome Engineering in crop plants -- 2. The revolution of OMICs technology in plant sciences -- 3. The applications of genomics and transcriptomics approaches for biotic stress tolerance in crops -- 4. Understanding abiotic stress tolerance in plants by proteomics approach -- 5. Role of metabolomics and next generation sequencing for sustainable crop production -- 6. Multi-omics approaches for strategic improvement of crops under climate change conditions -- 7. Advances in integrated bioinformatics and phenomics application in plants and agriculture -- 8. Nano-biotechnology and its applications in plant system biology -- 9. Food and nutritional security in the era of genomics and genome editing.-10. The utilization of Genomic region analysis and genome editing technologies for cereals grain quality improvement -- 11. The utilization of speed breeding and genome editing to achieve zero hunger. -- 12. Novel Plant Breeding Techniques for cereals crop improvement. -- 13. Epigenetic modifications through Genome editing. -- 14. Genome editing for Resource Use Efficiency in Crops -- 15. The mechanisms of genome editing technologies in crop plants -- 16. Genome editing for hybrid seed production and hybrid vigour preservation. -- 17. Transgene free a novel techniques for modern plant breeding system. -- 18. The application of database and bioinformatics for genome editing of crops. -- 19. Chapter 19. Regulations of genome editing in agriculture. -- Index.
    Abstract: Principle and Practices of OMICs and Genome Editing for Crop Improvement provides recent research from eminent scholars from around the world, from various geographical regions, with established expertise on genome editing and OMICs technologies. This book offers a wide range of information on OMICs techniques and their applications to develop biotic, abiotic and climate resilient crops, metabolomics and next generation sequencing for sustainable crop production, integration bioinformatics, and multi-omics for precision plant breeding. Other topics include application of genome editing technologies for food and nutritional security, speed breeding, hybrid seed production, resource use efficiency, epigenetic modifications, transgene free breeding, database and bioinformatics for genome editing, and regulations adopted by various countries around globe for genome edited crops. Both OMICs and genome editing are vigorously utilized by researchers for crop improvement programs; however, there is limited literature available in a single source. This book provides a valuable resource not only for students at undergraduate and postgraduate level but also for researchers, stakeholders, policy makers, and practitioners interested in the potential of genome editing and OMICs for crop improvement programs.
    Type of Medium: Online Resource
    Pages: VI, 425 p. 32 illus., 31 illus. in color. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9783030969257
    DDC: 581.35
    Language: English
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  • 5
    Keywords: Agriculture. ; Genetics. ; Biology Technique. ; Biotechnology. ; Botany. ; Agriculture. ; Genetics and Genomics. ; Biological Techniques. ; Biotechnology. ; Plant Science.
    Description / Table of Contents: Chapter. 1. The utilization of speed breeding and genome editing to achieve zero hunger -- Chapter. 2. Multiomics approach for crop improvement under climate change -- Chapter. 3. The intervention of multi-omics approaches for developing abiotic stress resistance in cotton crops under climate change -- Chapter. 4. Big data revolution and machine learning to solve genetic mysteries in crop breeding -- Chapter. 5. Applications of multi-omics approaches for food and nutritional security -- Chapter. 6. Applications of high throughput phenotypic phenomics -- Chapter. 7. Basil (Ocimum basilicum L.) : Botany, Genetic resource, Cultivation, Conservation, and Stress factors -- Chapter. 8. Multi-Omics Approaches for Breeding in Medicinal Plants -- Chapter. 9. Applications of some nanoparticles and responses of medicinal and aromatic plants under stress conditions -- Chapter. 10. Sustainable agriculture through technological innovations -- Chapter. 11. Sustainable Rice Production under Biotic and Abiotic Stress Challenges -- Chapter. 12. Emerging Techniques to Develop Biotic Stress Resistance in Fruits and Vegetables -- Chapter. 13. Genome editing in crops to control insect pests -- Chapter. 14. CRISPR revolution in gene editing, targeting plant stress tolerance and physiology -- Chapter. 15. Genomics for Abiotic Stress Resistance in Legumes -- Chapter. 16. Genetic and molecular factors modulating phosphorous use efficiency in plants -- Chapter. 17. Recent Trends in Genome Editing Technologies for Agricultural Crops Improvement -- Chapter. 18. Recent trends and applications of omics based knowledge to end global food hunger -- Chapter. 19. Nutritional enhancement in horticultural crops by CRISPR/ Cas9: status and future prospects -- Chapter. 20. Physiological interventions of antioxidants in crop plants under multiple abiotic stresses -- Chapter. 21. Proteomics and its scope to study salt stress tolerance in quinoa -- Chapter. 22. Sustainable Cotton Production in Punjab: Failure and its Mitigating Strategies -- Chapter. 23. Biosafety and biosecurity in genetically modified crops.
    Abstract: Access to food with enough calories and nutrients is a fundamental right of every human. The global population has exceeded 7.8 billion and is expected to pass 10 billion by 2055. Such rapid population increase presents a great challenge for food supply. More grain production is needed to provide basic calories for humans. Thus, it is crucial to produce 60-110% more food to fill the gap between food production and the demand of future generations. Meanwhile food nutritional values are of increasing interest to accommodate industrialized modern lives. The instability of food production caused by global climate change presents another great challenge. The global warming rate has become more rapid in recent decades, with more frequent extreme climate change including higher temperatures, drought, and floods. Our world faces various unprecedented scenarios such as rising temperatures, which causes melting glaciers and the resulting various biotic and abiotic stresses, ultimately leading to food scarcity. In these circumstances it is of utmost importance to examine the genetic basis and extensive utilization of germplasm to develop “climate resilient cultivars” through the application of plant breeding and biotechnological tools. Future crops must adapt to these new and unpredictable environments. Crop varieties resistant to biotic and abiotic stresses are also needed as plant disease, insects, drought, high- and low-temperature stresses are expected to be impacted by climate change. Thus, we need a food production system that can simultaneously satisfy societal demands and long-term development. Since the Green Revolution in the 1960s, farming has been heavily dependent on high input of nitrogen and pesticides. This leads to environmental pollution which is not sustainable in the long run. Therefore, a new breeding scheme is urgently needed to enable sustainable agriculture; including new strategies to develop varieties and crops that have high yield potential, high yield stability, and superior grain quality and nutrition while also using less consumption of water, fertilizer, and chemicals in light of environmental protection. While we face these challenges, we also have great opportunities, especially with flourishing developments in omics technologies. High-quality reference genomes are becoming available for a larger number of species, with some species having more than one reference genome. The genome-wide re-sequencing of diverse varieties enables the identification of core- and pan-genomes. An integration of omics data will enable a rapid and high-throughput identification of many genes simultaneously for a relevant trait. This will change our current research paradigm fundamentally from single gene analysis to pathway or network analysis. This will also expand our understanding of crop domestication and improvement. In addition, with the knowledge gained from omics data, in combination with new technologies like targeted gene editing, we can breed new varieties and crops for sustainable agriculture.
    Type of Medium: Online Resource
    Pages: VII, 514 p. 59 illus., 50 illus. in color. , online resource.
    Edition: 1st ed. 2023.
    ISBN: 9783031155680
    DDC: 630
    Language: English
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  • 6
    Keywords: Water. ; Hydrology. ; Agriculture. ; Climatology. ; Machine learning. ; Environmental economics. ; Water. ; Agriculture. ; Climate Sciences. ; Machine Learning. ; Environmental Economics.
    Description / Table of Contents: Understanding Hydrology of Indian Himalayan landscapes- A Review -- Development of a semi-distributed rainfall-runoff model for water budgeting in macropore dominated hilly river basins -- Hydrological Simulation Using Coupled ANN-SCS Approach in Pagladiya Watershed: A Sub-catchment of Brahmaputra River Basin -- Water erosion risks mapping using RUSLE model in the Mohamed Ben Abdelkrim El Khattabi Dam watershed (Central Coastal Rif, Morocco).
    Abstract: This book presents an exploration of linkages among soil-water, agriculture, and climate change with a special focus on thematic areas for assessment, mitigation, and management of natural resources under climate change conditions. This book covers advances in modelling approaches, including machine learning (ML)/ artificial intelligence (AI) applications; GIS and remote sensing; sensors; impacts of climate change on agriculture; subsurface water; contaminants; and socio-economic impacts, which are lacking in a more comprehensive manner in the previous titles. This book encompasses updated information as well as future directions for researchers working in the field of management of natural resources. The goal of this book is to provide scientific evidence to researchers and policymakers and end-to-end value chain practitioners which may help in reducing the overall adverse impacts of climate change on water resources and the related mitigation strategies. This book focuses on the knowledge, modern tools, and techniques, i.e., machine learning, artificial intelligence, etc. for soil-water, agriculture, and climate change. Further, nature-based solutions for management of natural resources with special targets on contaminants, extreme events, disturbances, etc. will be targeted. The book provides readers with the enhanced knowledge for application of engineering principles and economic and regulatory constraints to determine a soil-water, agriculture production action strategy, and select appropriate technologies to implement the strategy for a given data set at a site. It would also cover the application of laboratory, modeling, numerical methods for determination and forecasting of climate change impacts, agriculture production, pollution, soil health, etc. Overall, it provides hydrologists, environmental engineers, administrators, policy makers, consultants, and industrial experts with essential support in effective management of soils health, agricultural productions, and mitigation of extreme climatic events.
    Type of Medium: Online Resource
    Pages: XI, 376 p. 81 illus., 80 illus. in color. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9783031120596
    Series Statement: Water Science and Technology Library, 113
    DDC: 551.48
    Language: English
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  • 7
    Keywords: Agriculture. ; Plant biotechnology. ; Botanical chemistry. ; Plants Development. ; Plant genetics. ; Agriculture. ; Plant Biotechnology. ; Plant Biochemistry. ; Plant Development. ; Plant Genetics.
    Description / Table of Contents: Chapter 1. Biofortification of staple crops: Present status and future strategies -- Chapter 2. Historical overview of biofortification in crop plants and its implications -- Chapter 3. Genetic fortification of rice to address hidden hunger: progress and prospects -- Chapter 4. Advances in Wheat biofortification and Mainstreaming Grain Zinc in CIMMYT Wheat -- Chapter 5. Biofortification of maize for nutritional security -- Chapter 6. Pearl millet: bio-fortification approaches in a micronutrient dense, climate-resilient nutri-cereal -- Chapter 7. Barley Biofortification -- Chapter 8. Prospects of Biofortification in Groundnut using Modern Breeding Approaches -- Chapter 9. Dry Bean Biofortification With Iron and Zinc -- Chapter 10. Lentil biofortification -- Chapter 11. Biofortification of Mungbean -- Chapter 12. Biofortification of Cassava: Recent Progress and Challenges Facing the Future -- Chapter 13. Vegetable biofortification: An underexploited silver lining for malnutrition management -- Chapter 14. Transgenics for Biofortification with special reference to Rice -- Chapter 15. Agronomic and transgenic approaches for rice Zn biofortification -- Chapter 16. Agronomic approaches for biofortification of staple food crops -- Chapter 17. Micronutrients: Soil to seed -- Chapter 18. Pulse crop biofortification towards human health, targeting prebiotic carbohydrates, protein, and minerals -- Chapter 19. Biofortification of chickpea -- Chapter 20. Bifortifying sorghum for delivering grain micronutrients in high yielding cultivars with market preferred traits. .
    Abstract: This edited book brings together comprehensive information on various aspects of the biofortification of staple crops. It addresses the present status of food and nutritional security and highlights the importance of micronutrients in human health, a historical account of biofortification, current approaches and challenges, crop-specific biofortification efforts and various breeding approaches, including conventional, and genomics enabled improvement. It also explains the efficacy of biofortification, bioavailability, and future thrust. It is an inclusive source of information on different aspects of micronutrients in crops of global importance. Malnutrition is a serious global issue, with millions of people being undernourished, several suffering from micronutrient deficiencies, and the adult population struggling with obesity. Despite significant economic progress, South Asia and Sub-Saharan Africa are still home to an undernourished population. Nutrition-related health problems are related to hidden hunger and are widespread in the developing world. Women and preschool children are more vulnerable. Even though global food production has increased manifolds, estimates indicate that over 60% of the world’s population is deficient in essential micronutrients such as iron, zinc, iodine, and selenium, often causing health problems and developmental delays. Linking agricultural production with human nutrition and health is crucial for ensuring nutrition security. Much research has been carried out to assess genetic diversity related to micro-nutrients in staple crops, their bioavailability, and the efficacy of biofortified germplasm. Biofortified varieties developed in different crops through conventional breeding are being up-scaled for reducing the micronutrient deficiencies in other countries. This book is a ready reference for researchers, academicians, extension personnel, policymakers, students, and value chain stakeholders engaged in agriculture, nutrition, and health sectors promoting nutrition-sensitive diets. .
    Type of Medium: Online Resource
    Pages: XVI, 549 p. 1 illus. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9789811632808
    DDC: 630
    Language: English
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  • 8
    Keywords: Fungi. ; Mycology. ; Microbiology. ; Plants Evolution. ; Plant genetics. ; Agriculture. ; Plants Development. ; Plant biotechnology. ; Fungi. ; Plant Evolution. ; Plant Genetics. ; Agriculture. ; Plant Development. ; Plant Biotechnology.
    Description / Table of Contents: Preface -- Blast Disease: Historical Importance, Its Distribution, and Host Infectivity Across Cereal Crops -- Recent Advances in Blast Rice Disease -- The Blast-A Major Malady in Neutricereals in Southeast Asia -- Utilizing Host-Plant Resistance to Combat Blast Disease in Rice -- Microconidia: Understanding Its Role in the Rice Blast Fungus Magnaporthe oryzae -- Finger Millet Blast Pathogen Diversity and Management in Uttarakhand -- Finger Millet Blast (Magnaporthe grisea): Current Scenario and Its Integrated Disease -- Advances in Genetics, Genomics for Management of Blast Diseases in Cereal Crops -- Wheat Blast Management: Prospects and Retrospective -- Scenario of Blast Diseases in the Eastern Region of India -- Chemicals in the Management of Blast Disease of Rice -- Magnaporthe Genome: Lessons Learnt and the Way Forward -- Bibliography -- Index.
    Abstract: Blast is an important foliar disease that infects the majority of cereal crops like rice, finger millet, pearl millet, foxtail millet and wheat, and thus results in a huge economic impact. The pathogen is responsible for causing epidemics in many crops and commonly shifts to new hosts. Magnaporthe spp. is the most prominent cause of blast disease on a broad host range of grasses including rice as well as other species of Poaceae family. To date, 137 members of Poaceae hosting this fungus have been described in fungal databases. This book provides information on all blast diseases of different cereal crops. The pathogen evolves quickly due to its high variability, and thus can quickly adapt to new cultivars and cause an epidemic in a given crop. Some of the topics covered here include historical perspectives, pathogen evolution, host range shift, cross-infectivity, and pathogen isolation, use of chemicals fungicides, genetics and genomics, and management of blast disease in different cereal crops with adoption of suitable methodologies. In the past two decades there have been significant developments in genomics and proteomics approaches and there has been substantial and rapid progress in the cloning and mapping of R genes for blast resistance, as well as in comparative genomics analysis for resolving delineation of Magnaporthe species that infect both cereals and grass species. Blast disease resistance follows a typical gene-for-gene hypothesis. Identification of new Avr genes and effector molecules from Magnaporthe spp. can be useful to understand the molecular mechanisms involved in the fast evolution of different strains of this fungal genus. Advances in these areas may help to reduce the occurrence of blast disease by the identification of potential R genes for effective deployment. Additionally, this book highlights the importance of blast disease that infects different cereal hosts in the context of climate change, and genomics approaches that may potentially help in understanding and applying new concepts and technologies that can make real impact in sustainable management of blast disease in different cereal crops.
    Type of Medium: Online Resource
    Pages: XV, 219 p. 18 illus., 16 illus. in color. , online resource.
    Edition: 1st ed. 2021.
    ISBN: 9783030605858
    Series Statement: Fungal Biology,
    DDC: 579.5
    Language: English
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  • 9
    Publication Date: 2019-07-12
    Description: Polymer electrolyte membranes that conduct hydroxide ions have potential use in fuel cells. A variety of polystyrene-based quaternary ammonium hydroxides have been reported as anion exchange fuel cell membranes. However, the hydrolytic stability and conductivity of the commercially available membranes are not adequate to meet the requirements of fuel cell applications. When compared with commercially available membranes, polystyrene-imidazolium alkaline membrane electrolytes are more stable and more highly conducting. At the time of this reporting, this has been the first such usage for imidazolium-based polymeric materials for fuel cells. Imidazolium salts are known to be electrochemically stable over wide potential ranges. By controlling the relative ratio of imidazolium groups in polystyrene-imidazolium salts, their physiochemical properties could be modulated. Alkaline anion exchange membranes based on polystyrene-imidazolium hydroxide materials have been developed. The first step was to synthesize the poly(styrene-co-(1-((4-vinyl)methyl)-3- methylimidazolium) chloride through a free-radical polymerization. Casting of this material followed by in situ treatment of the membranes with sodium hydroxide solutions provided the corresponding hydroxide salts. Various ratios of the monomers 4-chloromoethylvinylbenzine (CMVB) and vinylbenzine (VB) provided various compositions of the polymer. The preferred material, due to the relative ease of casting the film, and its relatively low hygroscopic nature, was a 2:1 ratio of CMVB to VB. Testing confirmed that at room temperature, the new membranes outperformed commercially available membranes by a large margin. With fuel cells now in use at NASA and in transportation, and with defense potential, any improvement to fuel cell efficiency is a significant development.
    Keywords: Man/System Technology and Life Support
    Type: NPO-46457 , NASA Tech Briefs, August 2012; 18
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  • 10
    Publication Date: 2019-07-12
    Description: A number of future NASA missions involving the exploration of the Moon and Mars will be human-rated and thus require high-specific-energy rechargeable batteries that possess enhanced safety characteristics. Given that Li-ion technology is the most viable rechargeable energy storage device for near-term applications, effort has been devoted to improving the safety characteristics of this system. There is also a strong desire to develop Li-ion batteries with improved safety characteristics for terrestrial applications, most notably for hybrid electric vehicle (HEV) and plug-in hybrid electric vehicle (PHEV) automotive applications. Therefore, extensive effort has been devoted recently to developing non-flammable electrolytes to reduce the flammability of the cells/battery. A number of electrolyte formulations have been developed, including systems that (1) incorporate greater concentrations of the flame-retardant additive (FRA); (2) use di-2,2,2-trifluoroethyl carbonate (DTFEC) as a co-solvent; (3) use 2,2,2- trifluoroethyl methyl carbonate (TFEMC); (4) use mono-fluoroethylene carbonate (FEC) as a co-solvent and/or a replacement for ethylene carbonate in the electrolyte mixture; and (5) utilize vinylene carbonate as a "SEI promoting" electrolyte additive, to build on the favorable results previously obtained. To extend the family of electrolytes developed under previous work, a number of additional electrolyte formulations containing FRAs, most notably triphenyl phosphate (TPP), were investigated and demonstrated in experimental MCMB (mesocarbon micro beads) carbon- LiNi(0.8)Co(0.2)O2 cells. The use of higher concentrations of the FRA is known to reduce the flammability of the electrolyte solution, thus, a concentration range was investigated (i.e., 5 to 20 percent by volume). The desired concentration of the FRA is the highest amount tolerable without adversely affecting the performance in terms of reversibility, ability to operate over a wide temperature range, and the discharge rate capability. The use of fluorinated carbonates, much in the same manner as the incorporation of fluorinated ester-based solvents, was employed to reduce the inherent flammability of mixtures. Thus, electrolyte formulations that embody both approaches are anticipated to have much lower flammability, resulting in enhanced safety.
    Keywords: Man/System Technology and Life Support
    Type: NPO-47465 , NASA Tech Brief, May 2011; 16
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