Download or read book Dormancy Regulation in Conventional and Oleic Sunflower Lines Helianthus Annuus L written by Brent LaVerne Reschly and published by . This book was released on 2005 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sunflower (Helianthus annuus L.), is currently the second most important source of vegetable oil in the world. Seed dormancy in sunflowers poses a risk for off-season seed production in South America. Seed companies must hold the seed lots from sale until they meet minimum germination specifications and will not pose a risk for the customer. This investigation was undertaken to examine the differences in dormancy between SF270, a traditional oil sunflower hybrid, and X8927 a mid oleic sunflower hybrid. Seed was grown in Texas in 1999 and 2000. Samples were divided between three storage temperatures, constant 10°C, constant 14°C, and ambient room temperature and tested two times per month. The standard warm germination test, alternating 20-30°C warm germination test, and the ethrel warm germination test were used to evaluate germination and develop a dormancy profile for each genotype. A mathematical model was developed to calculate the average number of days to a specific germination value based on the laboratory germination data. The genotype SF270 broke dormancy soon after harvest, often before initial laboratory germination analysis could be completed. Genotype X8297 took longer to break dormancy than the traditional oil genotype. Both genotypes broke dormancy in a consistent pattern across the two production years. Storage of seed at constant 10°C, and constant 14°C prolonged the dormancy in both genotypes but, was more pronounced in the X8927 genotype. Storage at ambient room temperature had the most significant effect on breaking dormancy in the two genotypes. Of the three germination tests, the ethrel warm germination test was the best predictor of laboratory germination. Although these two genotypes cannot be considered representative of all genotypes, this study produced two very useful tools for seed producers. The model to calculate the average number of days after harvest to reach the target 85% germination goal, and the depth of dormancy or longevity of dormancy for a particular genotype. These tools can be used as a risk assessment tool to plan seed production placement, shipping, and anticipate product release.
Download or read book Seed Dormancy in Domesticated and Wild Sunflowers Helianthus Annuus L written by Robert L. Brunick and published by . This book was released on 2008 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elite inbred sunflower (Helianthus annuus L.) lines were found to have short-lived embryo and seed covering dormancies. Seed dormancy of wild sunflowers (H. annuus, H. argophyllus and H. exilis) was found to be controlled primarily by the seed covering (seed coat and pericarp) and embryo dormancy was short-lived (four to eight weeks). Native American Landraces (NALs) had low to moderate embryo and seed covering dormancy, which was more similar to elite lines. The seed covering in the NALs contributed more to seed dormancy than did the seed covering in the elite lines. The seed coat itself was implicated in seed dormancy and the length of dormancy caused by the seed coat varied by accession and variety. Excising 1/4 of the seed, rather than removing the entire seed covering, increased germination but also increased the number of seed that decayed. Dormancy of embryos from 19 wild sunflower accessions ranging in south to north latitude from Texas to Saskatchewan, Canada was found to be highly variable; however seed covering dormancy was similar among all the wild accessions in the northern latitudes. Germination of accessions in the most southern latitudes was greater (P
Download or read book Commencement written by Iowa State University and published by . This book was released on 2004 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Master s Theses Directories written by and published by . This book was released on 2006 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Download or read book Seed Dormancy Studies in Sunflower Helianthus Annuus L Physical Basis Of and Intraction Between Material and Embryo Tissues Over Seed Dormancy written by K. S. Krishna Murty and published by . This book was released on 1990 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Maturity Dormancy and Storability in Seven Sunflower Helianthus Annuus L Genotypes written by P. Bhaskara Rao and published by . This book was released on 1989 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metabolic Regulation of Leaf Senescence in Sunflower Helianthus Annuus L Plants written by Eloísa Agüera and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 1390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sunflowers written by Juan Ignacio Arribas and published by Nova Science Publishers. This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a broad number of recent discoveries, advances and important results concerning sunflower (Helianthus annus) crops and its related fields, with emphasis on the detailed study of several diseases and pests that can affect sunflowers (production, water resources needed, economy impact) in different regions of the globe, including Russia, both North and South America, Africa, India and Europe. We are all well aware of the increasing importance, as well as the economic impact that these plants have reached in recent years, not only in the food industry but also in the western energy market, with the increasing use of sunflower oil as a natural energy resource for biodiesel and biofuel. Apart from the interesting recent advances, results and conclusions presented in every chapter, plenty of visual and graphical content comprised of tables, charts, graphs, pictures and high quality detailed photographs and images showing different issues and problems regarding sunflower crops are also included. The manuscript chapters have been authored by experts in the field and in addition all of them underwent a stringent peer review process by expert reviewers to assure a high final scientific quality.
Download or read book Sunflower written by Enrique Martínez-Force and published by Elsevier. This book was released on 2015-08-12 with total page 731 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference delivers key information on all aspects of sunflower. With over 20 chapters, this book provides an extensive review of the latest developments in sunflower genetics, breeding, processing, quality, and utilization; including food, energy and industrial bioproduct applications. World-renowned experts in this field review U.S. and international practices, production, and processing aspects of sunflower. Presents seven chapters on improving sunflower production with insights on breeding and genetics; physiology and agronomy; common insect and bird pests; mutagenesis; and identifying and preventing diseases. Summarizes current knowledge of sunflower oil uses in food, oxididative stability, minor constituents, and lipids biosynthesis. Ideal reference for scientists, researchers, and students from across industry, academia, and government.
Download or read book Plant Breeding Abstracts written by and published by . This book was released on 1996-07 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Food Security and Safety written by Olubukola Oluranti Babalola and published by Springer Nature. This book was released on 2021-09-01 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on food security and safety issues in Africa, a continent presently challenged with malnutrition and food insecurity. The continuous increase in the human population of Africa will lead to higher food demands, and climate change has already affected food production in most parts of Africa, resulting in drought, reduced crop yields, and loss of livestock and income. For Africa to be food-secure, safe and nutritious food has to be available, well-distributed, and sufficient to meet people’s food requirements. Contributors to Food Security and Safety: African Perspectives offer solutions to the lack of adequate safe and nutritious food in sub-Saharan Africa, as well as highlight the positive efforts being made to address this lack through a holistic approach. The book discusses the various methods used to enhance food security, such as food fortification, fermentation, genetic modification, and plant breeding for improved yield and resistance to diseases. Authors emphasize the importance of hygiene and food safety in food preparation and preservation, and address how the constraints of climate change could be overcome using smart crops. As a comprehensive reference text, Food Security and Safety: African Perspectives seeks to address challenges specific to the African continent while enhancing the global knowledge base around food security, food safety, and food production in an era of rapid climate change.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1999 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Lipid Metabolism written by J.C. Kader and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of papers that comprehensively describe the major areas of research on lipid metabolism of plants. State-of-the-art knowledge about research on fatty acid and glycerolipid biosynthesis, isoprenoid metabolism, membrane structure and organization, lipid oxidation and degradation, lipids as intracellular and extracellular messengers, lipids and environment, oil seeds and gene technology is reviewed. The different topics covered show that modern tools of plant cellular and molecular biology, as well as molecular genetics, have been recently used to characterize several key enzymes of plant lipid metabolism (in particular, desaturases, thioesterases, fatty acid synthetase) and to isolate corresponding cDNAs and genomic clones, allowing the use of genetic engineering methods to modify the composition of membranes or storage lipids. These findings open fascinating perspectives, both for establishing the roles of lipids in membrane function and intracellular signalling and for adapting the composition of seed oil to the industrial needs. This book will be a good reference source for research scientists, advanced students and industrialists wishing to follow the considerable progress made in recent years on plant lipid metabolism and to envision the new opportunities offered by genetic engineering for the development of novel oil seeds.
Download or read book Genetically Modified Crops written by P. B. Kavi Kishor and published by Springer Nature. This book was released on 2020-11-03 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic transformation is a key technology, in which genes are transferred from one organism to another in order to improve agronomic traits and ultimately help humans. However, there is apprehension in some quarters that genetically modified crops may disturb the ecosystem. A number of non-governmental organizations continue to protest against GM crops and foods, despite the fact that many organisms are genetically modified naturally in the course of evolution. In this context, there is a need to educate the public about the importance of GM crops in terms of food and nutritional security. This book provides an overview of various crop plants where genetic transformation has been successfully implemented to improve their agronomically useful traits. It includes information on the gene(s) transferred, the method of gene transfer and the beneficial effects of these gene transfers and agronomic improvements compared to the wild plants. Further, it discusses the commercial prospects of these GM crops as well as the associated challenges. Given its scope, this book is a valuable resource for agricultural and horticultural scientists/experts wanting to explain to the public, politicians and non-governmental organizations the details of GM crops and how they can improve crops and the lives of farmers.
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 2000 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Industrial Oil Crops written by Thomas McKeon and published by Elsevier. This book was released on 2016-02-24 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Industrial Oil Crops presents the latest information on important products derived from seed and other plant oils, their quality, the potential environmental benefit, and the latest trends in industrial uses. This book provides a comprehensive view of key oil crops that provide products used for fuel, surfactants, paints and coatings, lubricants, high-value polymers, safe plasticizers and numerous other products, all of which compete effectively with petroleum-derived products for quality and cost. Specific products derived from oil crops are a principle concern, and other fundamental aspects of developing oil crops for industrial uses are also covered. These include improvement through traditional breeding, and molecular, tissue culture and genetic engineering contributions to breeding, as well as practical aspects of what is needed to bring a new or altered crop to market. As such, this book provides a handbook for developing products from renewable resources that can replace those currently derived from petroleum. Led by an international team of expert editors, this book will be a valuable asset for those in product research and development as well as basic plant research related to oil crops. Up-to-date review of all the key oilseed crops used primarily for industrial purposes Highlights the potential for providing renewable resources to replace petroleum derived products Comprehensive chapters on biodiesel and polymer chemistry of seed oil Includes chapters on economics of new oilseed crops, emerging oilseed crops, genetic modification and plant tissue culture technology for oilseed improvement
