Download or read book Molecular Breeding for Winter Survivorship in Lowland Switchgrass written by Hari Prasad Poudel and published by . This book was released on 2019 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: High winter mortality is the most important factor limiting biomass yield of lowland switchgrass (Panicum virgatum L.) planted in the northern latitudes of North America. Breeding of cold tolerant switchgrass cultivars requires several years because of the perennial growth habit and strong dependence on weather conditions that generate sufficient selection pressure to identify winter hardy individuals. Marker-based breeding approaches have the potential to accelerate genetic gains in lowland switchgrass by reducing the length of the breeding cycle and reducing dependence on weather. In this dissertation, the prospect of using DNA markers for improving winter survival of lowland switchgrass was studied using two molecular approaches: identification and discovery of quantitative trait loci (QTL) and genomic prediction using genome-wide markers. The first chapter provides insights into the molecular mechanism of freezing tolerance and identifies QTL studies relating to freezing tolerance in economically important crop species within the grass family. QTL conferring freezing tolerance are highly conserved among species belonging to the Pooideae subfamily, but little is known about similar mechanisms within the Pancoideae. The second chapter reports the development of a genetic linkage map and identification of QTL in a bi-parental mapping population. A total of six QTL, one each on chromosomes 1K, 5K, 5N, 6K, 6N and 9K, were identified within this population. These QTL are specific to this population studied and may not necessarily be helpful in improving other populations. Therefore, in chapter three, a low-cost method of QTL identification based on bulk segregant analysis (BSA) was performed simultaneously on 21 natural or open-pollinated lowland switchgrass populations of highly diverse origins. DNA pools were created from survivor and non-survivor groups within each of the 21 populations and at each of two evaluation locations, evaluated statistically using BSA. Twenty-five potential QTL were identified across the genome, of which QTL on chromosomes 8K and 8N were deemed most prominent. Some of the QTL were present in multiple populations across a broad geographic landscape, while other QTL were specific to a single site of origin. The QTL identified in this study could be helpful in improving single populations or multiple populations based on marker-based selection approaches. The last chapter evaluates the potential of using genomic prediction models for predicting genomic estimated breeding value (GEBV) for winter survival in lowland switchgrass across multiple populations of diverse origin. Validation of the model was performed using two independent datasets: (1) correlating indirect indicators of winter adaptation based on geographic and climatic variables of accessions from different source locations with GEBV and (2) using phenotypic winter survival estimates from independent populations and experiments to correlate with GEBV. The predicted winter survival of lowland switchgrass indicated latitudinal and longitudinal variability, with the northeast USA the region for most cold tolerant lowland populations. Modeling for population heterogeneity improved the prediction accuracy to some extent but the genetic relationship between the training and validation populations was found to be more influential. The findings from this dissertation provide valuable opportunities for improving winter survival and accelerating breeding of low-temperature-tolerant lowland switchgrass suitable for the northern latitudes.

Download or read book Compendium of Bioenergy Plants written by Hong Luo and published by CRC Press. This book was released on 2014-03-14 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the most comprehensive reviews on the latest development of switchgrass research including the agronomy of the plant, the use of endophytes and mycorrhizae for biomass production, genetics and breeding of bioenergy related traits, molecular genetics and molecular breeding, genomics, transgenics, processing, bioconversion, biosyst

Download or read book The Improvement of Yield Limiting Switchgrass Panicum Virgatum L Traits Through Genomic Prediction and Selection written by Neal Wepking Tilhou and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genomic prediction allows the estimation of breeding values for individuals in a breeding program using molecular markers. In plant breeding, this can improve the precision of field evaluations or even allow a breeder to bypass time-intensive field evaluations altogether. Switchgrass is a candidate bioenergy crop which must be rapidly developed and deployed to mitigate climate change caused by excess carbon emissions. Switchgrass is a long-lived perennial with slow selection cycles (4-6 years), therefore accurate genomic prediction of yield or yield surrogates will be valuable for rapid cultivar development. This dissertation presents multiple applications of genomic prediction which can accelerate yield improvement in switchgrass. The first chapter is a review of recent developments of bioenergy, switchgrass agronomy, and genomic prediction. The second chapter evaluates genomic prediction of flowering time to improve biomass yield. It found limited value in sharing information between diverged switchgrass breeding populations, but that genomic prediction within breeding populations had strong predictive ability (0-43-0.90) and flowering time predictions were able to accurately rank individuals evaluated for biomass yield (0.38-0.63). The third chapter evaluated genomic prediction for winter survivorship on crosses from diverse, winter-intolerant populations. Again, genomic prediction was able to accurately predict winter survivorship in a progeny population (predictive ability = 0.71) and this chapter further reinforced that winter tolerant populations from the southern United States have strong biomass yield potential in the north-central United States. The fourth chapter presents simulations which tested pooled sequencing of DNA samples as a strategy to reduce the expense of adopting genomic prediction. Overall, pooling samples of individuals evaluated in the field and individuals sequenced to obtain predictions consistently resulted in reduced predictive ability. However, this loss in accuracy was often minor relative to the substantial cost savings provided by pooled DNA sequencing. In resource constrained scenarios, this study found multiple routes where DNA pooling could increase breeding progress. The research presented in this dissertation highlights multiple new breeding strategies and methods for integrating genomic prediction methods into switchgrass and other breeding programs with limited resources.

Download or read book Fodder Crops and Amenity Grasses written by Beat Boller and published by Springer Science & Business Media. This book was released on 2010-01-14 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grassland farming in Europe was already established during the settlement of the rst farmers together with their domesticated animals after the last ice age. Since then, grassland provides the forage basis to feed ruminant animals for the p- duction of meat and milk. Depending on the ecological conditions and intensity of usage, various plant communities with different species developed, displaying a rich biodiversity. With the introduction of improved crop rotations at the end of the 16th century, grasses and legumes were also grown to an important extent as forage crops on arable land. In the last decades the importance of amenity grasses increased markedly, due to the demand of the society for new usages like landscape protection. Around 1900 interested farmers and academics identi ed the need for gra- land improvement through systematic selection and seed production. This marks the beginning of breeding and research in companies but also at universities and specialized research institutes. Plant collection started with many of the species that are still of importance today. The collected materials were grouped according to the intended use and some type of phenotypic selection was applied. Seed mul- plication of such populations was performed in pure stands and the harvested seed was marketed. Although the vegetative biomass and its quality are of utmost imp- tance in forage crop breeding, it is the seed yield potential which determines the commercial success of a new variety.

Download or read book Biochemical Physiological and Molecular Avenues for Combating Abiotic Stress in Plants written by Shabir Hussain Wani and published by Academic Press. This book was released on 2018-06-12 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biochemical, Physiological and Molecular Avenues for Combating Abiotic Stress in Plants is a must-have reference for researchers and professionals in agronomy, plant science and horticulture. As abiotic stress tolerance is a constant challenge for researchers and professionals working on improving crop production, this book combines recent advances with foundational content, thus offering in-depth coverage on a variety of abiotic stress tolerance mechanisms that help us better understand and improve plant response and growth under stress conditions. The mechanisms explored in this book include stress perception, signal transduction and synthesis of stress-related proteins and other molecules. In addition, the book provides a critical understanding of the networks of genes responsible for abiotic stress tolerance and their utilization in the development of stress tolerance in plants. Practical breeding techniques and modern genetic analyses are also discussed. Unlocks the physiological, biochemical and molecular basis of abiotic stress response and tolerance in crop plants Presents comprehensive information on abiotic stress tolerance, from gene to whole plant level Includes content on antioxidant metabolism, marker-assisted selection, microarrays, next-generation sequencing and genome editing techniques

Download or read book Phenological Research written by Irene L. Hudson and published by Springer Science & Business Media. This book was released on 2009-11-24 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: As climate change continues to dominate the international environmental agenda, phenology – the study of the timing of recurring biological events – has received increasing research attention, leading to an emerging consensus that phenology can be viewed as an ‘early warning system’ for climate change impact. A multidisciplinary science involving many branches of ecology, geography and remote sensing, phenology to date has lacked a coherent methodological text. This new synthesis, including contributions from many of the world’s leading phenologists, therefore fills a critical gap in the current biological literature. Providing critiques of current methods, as well as detailing novel and emerging methodologies, the book, with its extensive suite of references, provides readers with an understanding of both the theoretical basis and the potential applications required to adopt and adapt new analytical and design methods. An invaluable source book for researchers and students in ecology and climate change science, the book also provides a useful reference for practitioners in a range of sectors, including human health, fisheries, forestry, agriculture and natural resource management.

Download or read book Plant Genomes written by Jean-Nicolas Volff and published by Karger Medical and Scientific Publishers. This book was released on 2008-01-01 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent major advances in the field of comparative genomics and cytogenomics of plants, particularly associated with the completion of ambitious genome projects, have uncovered astonishing facets of the architecture and evolutionary history of plant genomes. The aim of this book was to review these recent developments as well as their implications in our understanding of the mechanisms which drive plant diversity. New insights into the evolution of gene functions, gene families and genome size are presented, with particular emphasis on the evolutionary impact of polyploidization and transposable elements. Knowledge on the structure and evolution of plant sex chromosomes, centromeres and microRNAs is reviewed and updated. Taken together, the contributions by internationally recognized experts present a panoramic overview of the structural features and evolutionary dynamics of plant genomes.This volume of Genome Dynamics will provide researchers, teachers and students in the fields of biology and agronomy with a valuable source of current knowledge on plant genomes.

Download or read book Switchgrass written by Andrea Monti and published by Springer Science & Business Media. This book was released on 2012-03-09 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The demand for renewable energies from biomass is growing steadily as policies are enacted to encourage such development and as industry increasingly sees an opportunity to develop bio-energy enterprises. Recent policy changes in the EU, USA and other countries are spurring interest in the cultivation of energy crops such as switchgrass. Switchgrass has gained and early lead in the race to find a biomass feedstock for energy production (and for the almost requisite need for bio-based products from such feedstocks). Switchgrass: A Valuable Biomass Crop for Energy provides a comprehensive guide to the biology, physiology, breeding, culture and conversion of switchgrass as well as highlighting various environmental, economic and social benefits. Considering this potential energy source, Switchgrass: A Valuable Biomass Crop for Energy brings together chapters from a range of experts in the field, including a foreword from Kenneth P. Vogel, to collect and present the environmental benefits and characteristics of this a crop with the potential to mitigate the risks of global warming by replacing fossil fuels. Including clear figures and tables to support discussions, Switchgrass: A Valuable Biomass Crop for Energy provides a solid reference for anyone with interest or investment in the development of bioenergy; researchers, policy makers and stakeholders will find this a key resource.

Download or read book Ecology Global Insights and Investigations written by Peter Stiling, Dr. Ph.D. and published by McGraw-Hill Education. This book was released on 2014-02-21 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Peter Stiling, co-author of Biology by Brooker et al., has introduced a new ecology text to the market. The main goal of this latest ecology text is to show how ecology is important in understanding global change. The book's main objective is to teach the basic principles of ecology and to relate these principles to many of the Earth's ecological problems. Users who purchase Connect Plus receive access to the full online ebook version of the textbook.

Download or read book Bobwhite Quail Propagation written by Ralph Bernard Nestler and published by . This book was released on 1941 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bobwhite quail, one of the most popular and widely distributed of game birds, can be successfully raised in captivity for restocking depleted coverts. This bulletin gives the essential principles involved in its feeding and management.

Download or read book Conservation Biology written by Fred Van Dyke and published by Springer Science & Business Media. This book was released on 2008-02-28 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fred Van Dyke’s new textbook, Conservation Biology: Foundations, Concepts, Applications, 2nd Edition, represents a major new text for anyone interested in conservation. Drawing on his vast experience, Van Dyke’s organizational clarity and readable style make this book an invaluable resource for students in conservation around the globe. Presenting key information and well-selected examples, this student-friendly volume carefully integrates the science of conservation biology with its implications for ethics, law, policy and economics.

Download or read book Infectious Diseases of Wild Mammals written by Elizabeth S. Williams and published by John Wiley & Sons. This book was released on 2008-02-28 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infectious Diseases of Wild Mammals, Third Edition presents the latest information on the diagnosis and treatment of infectious disease in both free-ranging and captive wild mammals. Editors Elizabeth Williams and Ian Barker have recruited 71 contributors, all noted experts in their fields, to update this new edition. This reference provides valuable information on each disease, including Etiology History Distribution Epidemiology Clinical signs Pathology Immunity Diagnosis Treatment Control This latest edition is a leading reference book for Wildlife biologists, managers, and rehabilitators Biology students Conservationists Public health workers

Download or read book Methods and Techniques in Plant Physiology written by Cornelio Losa and published by . This book was released on 2016-08-01 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plants are loved by lots of people - in our homes, on our tables as foods, and in hundreds of products we use every day. Plants have many different usages. But how do plants develop from seeds, and how do they grow? This is where plant physiology comes into play. Plant physiology is the study of how different parts of plants function. It includes many aspects of plant life, including nutrition, movement, and growth. Fundamental processes such as photosynthesis, respiration, plant nutrition, plant hormone functions, tropisms, nastic movements, photoperiodism, photomorphogenesis, circadian rhythms, environmental stress physiology, seed germination, dormancy and stomata function and transpiration, both parts of plant water relations, are studied by plant physiologists. Plant physiology includes the study of biological and chemical processes of individual plant cells. Plant cells have a number of features that distinguish them from cells of animals, and which lead to major differences in the way that plant life behaves and responds differently from animal life. This book explores how plant physiology helps us to understand the many functions and behaviors of plants. Methods and Techniques in Plant Physiology is dedicated to physiology, biochemistry, cellular and molecular biology, genetics, biophysics, and environmental biology of plants. Techniques related to various physiological phenomenon are focus of tremendous interest and importance to plant physiologist, agronomist, horticulturist, ecologist, and biochemists.

Download or read book Pink Bollworm Eradication written by United States. Congress. House. Committee on Agriculture and published by . This book was released on 1928 with total page 1248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plant Transformation Technologies written by Charles Neal Stewart and published by John Wiley & Sons. This book was released on 2011-01-31 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Transformation Technologies is a comprehensive, authoritative book focusing on cutting-edge plant biotechnologies, offering in-depth, forward-looking information on methods for controlled and accurate genetic engineering. In response to ever-increasing pressure for precise and efficient integration of transgenes in plants, many new technologies have been developed. With complete coverage of these technologies, Plant Transformation Technologies provides valuable insight on current and future plant transformation technologies. With twenty-five chapters written by international experts on transformation technologies, the book includes new information on Agrobacterium, targeting transgenes into plant genomes, and new vectors and market systems. Including both review chapters and protocols for transformation, Plant Transformation Technologies is vitally important to graduate students, postdoctoral students, and university and industry researchers.

Download or read book The Longleaf Pine Ecosystem written by Shibu Jose and published by Springer Science & Business Media. This book was released on 2006-05-18 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: The longleaf pine ecosystem, once one of the most extensive ecosystems in North America, is now among the most threatened. Over the past few centuries, land clearing, logging, fire suppression, and the encroachment of more aggressive plants have led to an overwhelming decrease in the ecosystem’s size, to approximately 2.2% of its original coverage. Despite this devastation, the range of the longleaf still extends from Virginia to Texas. Through the combined efforts of organizations such as the USDA Forest Service, the Longleaf Alliance, and the Nature Conservancy, extensive programs to conserve, restore, and manage the ecosystem are currently underway. The longleaf pine ecosystem is valued not only for its aesthetic appeal, but also for its outstanding biodiversity, habitat value, and for the quality of the longleaf pine lumber. It has a natural resistance to fire and insects, and supports more than thirty threatened or endangered plant and animal species, including the red-cockaded woodpecker and the gopher tortoise. The Longleaf Pine Ecosystem unites a wealth of current information on the ecology, silviculture, and restoration of this ecosystem. The book also includes a discussion of the significant historical, social, and political aspects of ecosystem management, making it a valuable resource for students, land managers, ecologists, private landowners, government agencies, consultants, and the forest products industry. About the Editors: Dr. Shibu Jose is Associate Professor of Forest Ecology and Dr. Eric J. Jokela is Professor of Silviculture at the School of Forest Resources and Conservation at the University of Florida in Gainesville. Dr. Deborah L. Miller is Associate Professor of Wildlife Ecology in the Department of Wildlife Ecology and Conservation at the University of Florida in Milton.

Download or read book Naturalized Parrots of the World written by Stephen Pruett-Jones and published by Princeton University Press. This book was released on 2021-08-10 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The first book to look at naturalized parrots with a global perspective, with a wide range of chapters by 36 leading researchers"--