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Studies Of Resistance To Northern Leaf Blight In Maize
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Book Synopsis Studies of Resistance to Northern Leaf Blight in Maize by : Alice Elaine Johnson
Download or read book Studies of Resistance to Northern Leaf Blight in Maize written by Alice Elaine Johnson and published by . This book was released on 1985 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several forms of resistance to northern leaf blight were exomined in the previously described studies with the following results: 1. The degree of polygenic resistance varied between inbred lines. RD6501, LB-31 and RD5502 are the most resistant lines tested. The resistance of RD5502 is either additive or partially recessive since the resistance is not expressed in F1 hybrids. The resistance of RD6501 appears to involve either a major partially dominant factor with modifiers or a block of closely linked resistance genes. A generation means study of this inbred almost fits a one gene model, but the F2, BC2 and F3 data exhibit either crossovers between resistant and susceptible factors or modifier effects over different environements. F1's do not show completedominance. RD6501 exhibits reduction of sporulation on developing lesions, a trait generally associated with single gene ressitance, and RD6501, LB-31 and RD5502 show reduction of rate of lesion development typical of polygenic resistance. So, some form of polygenic resistance was detected, but it doesn't appear to involve a large of genes. Yield studies of hybrids with various degrees of polygenic resistance indicate this form of resistance is effective in reducing yield loss due to northern leaf blight. 2. Studies with the Ht2 gene, which is reported to be a single dominant gene for resistance to H. turcicum race 2, gave some interesting results. Expression of the chlorotic-lesion symptoms reported to be typical of HT2 resistance varied in lines with (...).
Book Synopsis Studies of Resistance to Southern and Northern Corn Leaf Blights in Maize by : Hernán Ceballos
Download or read book Studies of Resistance to Southern and Northern Corn Leaf Blights in Maize written by Hernán Ceballos and published by . This book was released on 1987 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compendium of Corn Diseases by : Gary Phillip Munkvold
Download or read book Compendium of Corn Diseases written by Gary Phillip Munkvold and published by . This book was released on 2016 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Maize: Its Biology by : Jeff L. Bennetzen
Download or read book Handbook of Maize: Its Biology written by Jeff L. Bennetzen and published by Springer Science & Business Media. This book was released on 2008-12-25 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Maize: Its Biology centers on the past, present and future of maize as a model for plant science research and crop improvement. The book includes brief, focused chapters from the foremost maize experts and features a succinct collection of informative images representing the maize germplasm collection.
Book Synopsis Studies on Partial Resistance to Turcicum Leaf Blight (Exserohilum Turcicum (Pass) Leonard and Suggs) I N Maize by : MALLIKARJUNA N
Download or read book Studies on Partial Resistance to Turcicum Leaf Blight (Exserohilum Turcicum (Pass) Leonard and Suggs) I N Maize written by MALLIKARJUNA N and published by . This book was released on 1998 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies on Biochemical Basis and Resistance Sources of Maize to Turcicum Leaf Blight Caused by Exserohilum Turcicum (Pass.) Leonard and Suggs by : E. Jagadeesh
Download or read book Studies on Biochemical Basis and Resistance Sources of Maize to Turcicum Leaf Blight Caused by Exserohilum Turcicum (Pass.) Leonard and Suggs written by E. Jagadeesh and published by . This book was released on 2013 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanisms of Resistance to Plant Diseases by : R.S. Fraser
Download or read book Mechanisms of Resistance to Plant Diseases written by R.S. Fraser and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant resistance to pathogens is one of the most important strategies of disease control. Knowledge of resistance mechanisms, and of how to exploit them, has made a significant contribution to agricultural productivity. However, the continuous evolution of new variants of pathogen, ana additional control problems posed by new crops and agricultural methods, creates a need for a corresponding increase in our understanding of resistance and ability to utilize it. The study of resistance mechanisms also has attractions from a purely academic point of view. First there is the breadth of the problem, which can be approached at the genetical, molecular, cellular, whole plant or population lev~ls. Often there is the possibility of productive exchange of ideas between different disciplines. Then there is the fact that despite recent advances, many of the mechanisms involved have still to be fully elucidated. Finally, and compared with workers in other areas of biology, the student of resistance is twice blessed in having as his subject the interaction of two or more organisms, with the intriguing problems of recognition, specificity and co-evolution which this raises.
Book Synopsis Genetic Analysis of Southern Leaf Blight, Gray Leaf Spot, and Northern Leaf Blight Resistance Using Near-isogenic Lines and Mapping Populations in Maize by : John Charles Zwonitzer
Download or read book Genetic Analysis of Southern Leaf Blight, Gray Leaf Spot, and Northern Leaf Blight Resistance Using Near-isogenic Lines and Mapping Populations in Maize written by John Charles Zwonitzer and published by . This book was released on 2008 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: southern leaf blight, gray leaf spot, northern leaf blight, quantitative disease resistance, multiple disease resistance, disease resistance quantitative trail loci, near-isogenic lines, maize, recombinant inbred lines.
Book Synopsis Plant Functional Genomics by : Jose M. Alonso
Download or read book Plant Functional Genomics written by Jose M. Alonso and published by Humana. This book was released on 2016-10-05 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition volume discusses the revolutionary development of faster and less expensive DNA sequencing technologies from the past 10 years and focuses on general technologies that can be utilized by a wide array of plant biologists to address specific questions in their favorite model systems. This book is organized into five parts. Part I examines the tools and methods required for identifying epigenetic and conformational changes at the whole-genome level. Part II presents approaches used to determine key aspects of a gene’s function, such as techniques used to identify and characterize gene regulatory networks. This is followed by a discussion of tools used to analyze the levels of mRNA, mRNA translation rates and metabolites. Part III features a compilation of forward and reverse genetic approaches that include recent implementation of high-throughput sequencing in classical methodologies such as QTL mapping. The final two parts explore strategies to facilitate and accelerate the generation and testing of functional DNA elements and basic computational tools used to facilitate the use of systems biology approached by a broad spectrum of plant researchers. Written in the highly successful Methods of Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols and key tips on troubleshooting and avoiding known pitfalls. Practical and timely, Plant Functional Genomics: Methods and Protocols, Second Edition highlights the latest developments in DNA sequencing technologies that are likely to continue shaping the future of functional genomics.
Download or read book Wheat Blast written by Sudheer Kumar and published by CRC Press. This book was released on 2020-04-09 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wheat Blast provides systematic and practical information on wheat blast pathology, summarises research progress and discusses future perspectives based on current understanding of the existing issues. The book explores advance technologies that may help in deciding the path for future research and development for better strategies and techniques to manage the wheat blast disease. It equips readers with basic and applied understanding on the identification of disease, its distribution and chances of further spread in new areas, its potential to cause yield losses to wheat, the conditions that favour disease development, disease prediction modelling, resistance breeding methods and management strategies against wheat blast. Features: Provides comprehensive information on wheat blast pathogen and its management under a single umbrella Covers disease identification and diagnostics which will be helpful to check introduction in new areas Discusses methods and protocol to study the different aspects of the disease such as diagnostics, variability, resistance screening, epiphytotic creation etc. Gives deep insight on the past, present and future outlook of wheat blast research progress This book’s chapters are contributed by experts and pioneers in their respective fields and it provides comprehensive insight with updated findings on wheat blast research. It serves as a valuable reference for researchers, policy makers, students, teachers, farmers, seed growers, traders, and other stakeholders dealing with wheat.
Book Synopsis Diagnosis of Ill Health in Trees by : R. G. Strouts
Download or read book Diagnosis of Ill Health in Trees written by R. G. Strouts and published by TSO. This book was released on 2000-01-01 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: An easy to understand non-laboratory based system for determining the causes of ill-health in trees. The emphasis is on problems of species grown for non-commercial purposes, but nearly all causes of ill-health in trees are covered on some detail, apart from damage from biting insects and mammals. Subjects covered include: diagnostic procedure, the known problems of virtually all tree genera used for amenity purposes in Great Britain; prevention and treatment of pests, diseases and disorders; decay and tree safety; and tree pest and disease legislation. Additions to the second edition include a major section of the identification of the principal wood-rotting fungi on trees, and items on water logging and exotic pests and diseases.
Book Synopsis Achieving Durable Disease Resistance in Cereals by : Prof Richard Oliver
Download or read book Achieving Durable Disease Resistance in Cereals written by Prof Richard Oliver and published by . This book was released on 2021-08-24 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection reviews advances in the key areas required to achieve durable disease resistance in cereal crops, from advances in understanding pathogen biology/epidemiology and plant pathogen interactions to identifying sources of resistance and advance techniques for breeding new varieties.
Book Synopsis The Genetic Architecture of Quantitative Disease Resistance in Maize by : Jesse Abner Poland
Download or read book The Genetic Architecture of Quantitative Disease Resistance in Maize written by Jesse Abner Poland and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several large scale quantitative genetic studies were conducted to better understand the genetic basis for quantitative disease resistance (QDR) in plants. The focus of these studies was the economically important disease of maize (Zea mays L. ssp. mays), northern leaf blight (NLB, caused by Setosphaeria turcica L. anamorph Exserohilum turcicum). The maize nested association mapping (NAM) population, a reference design population consisting of 4,630 recombinant inbred lines, was evaluated over three environments for quantitative resistance to NLB, giving highly heritable resistance phenotypes. Over 200 resistance alleles at 30 different quantitative trait loci (QTL) for disease resistance were identified. Genome-wide nested association mapping for NLB resistance identified genes at six of the QTL that have been associated with disease resistance including three receptor-like kinases, two ethylene response factors, and one Mlo-like gene. Further insight on QDR, with a focus on multiple disease resistance (MDR), was gained by jointly analyzing independent data on NAM for resistance to southern leaf blight (SLB), gray leaf spot (GLS) and NLB. To examine the possibility of MDR genes, the estimated allele effects from each founder inbred were compared at loci were QTL for two or more diseases co-localized. At seven loci, positively correlated allele effects provided evidence for MDR genes. Analysis of the NAM population suggested that resistance to the three diseases studied here is largely due to the accumulation of disease-specific genes and, to a limited extent, pleiotropic genes that condition MDR. A final study was conducted to determine the effect of variability in visual disease rating on mapping disease QTL by assessing the effects of scorer variability and rating scales on mapping QTL for NLB in a single recombinant inbred line population from NAM. Stepwise general linear model selection (GLM) and inclusive composite interval mapping (ICIM) were used for QTL mapping. For both GLM and ICIM the same QTL were largely found across scorers, though some QTL were only identified by some scorers. Strikingly, the magnitudes of estimated allele effects from different scorers at identified QRL were drastically different, sometime by as much as three fold. The studies conducted here advance the understanding of QDR in plants and lay groundwork for identifying the genes responsible for resistance to NLB in maize. A greater understanding of QDR will assist in the development of durable resistant crop cultivars, improving food security and safety.
Book Synopsis Managing Global Genetic Resources by : National Research Council
Download or read book Managing Global Genetic Resources written by National Research Council and published by National Academies Press. This book was released on 1993-02-01 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: This anchor volume to the series Managing Global Genetic Resources examines the structure that underlies efforts to preserve genetic material, including the worldwide network of genetic collections; the role of biotechnology; and a host of issues that surround management and use. Among the topics explored are in situ versus ex situ conservation, management of very large collections of genetic material, problems of quarantine, the controversy over ownership or copyright of genetic material, and more.
Book Synopsis Return to Resistance by : Raoul A. Robinson
Download or read book Return to Resistance written by Raoul A. Robinson and published by IDRC. This book was released on 1996 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the tradition of Silent Spring, Raoul Robinson's Return to Resistance calls for a revolution. Traditional plant breeding techniques have led us to depend more and more on chemical pesticides to protect ourcrops. Return to Resistance shows gardeners, farmers, and plant breeders how to use a long-neglected technique to create hardy new plant varieties that are naturally resistant to pests and disease. Horizontal resistance breeding has been largely ignored in this century due to the popularity and apparent successes of the Mendelian geneticists. However the colossal, unrecognized failure of m.
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309437385 Total Pages :607 pages Book Rating :4.3/5 (94 download)
Book Synopsis Genetically Engineered Crops by : National Academies of Sciences, Engineering, and Medicine
Download or read book Genetically Engineered Crops written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-01-28 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetically engineered (GE) crops were first introduced commercially in the 1990s. After two decades of production, some groups and individuals remain critical of the technology based on their concerns about possible adverse effects on human health, the environment, and ethical considerations. At the same time, others are concerned that the technology is not reaching its potential to improve human health and the environment because of stringent regulations and reduced public funding to develop products offering more benefits to society. While the debate about these and other questions related to the genetic engineering techniques of the first 20 years goes on, emerging genetic-engineering technologies are adding new complexities to the conversation. Genetically Engineered Crops builds on previous related Academies reports published between 1987 and 2010 by undertaking a retrospective examination of the purported positive and adverse effects of GE crops and to anticipate what emerging genetic-engineering technologies hold for the future. This report indicates where there are uncertainties about the economic, agronomic, health, safety, or other impacts of GE crops and food, and makes recommendations to fill gaps in safety assessments, increase regulatory clarity, and improve innovations in and access to GE technology.
Book Synopsis Plant Disease Management by : Hriday Chaube
Download or read book Plant Disease Management written by Hriday Chaube and published by CRC Press. This book was released on 2018-01-18 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book attempts to provide to provide concise, critical, synthetic and up-to-date coverage of different aspects of plant disease management. The first eleven chapters are devoted to principles and related aspects and the remining seven to management practices based on them. The book attempts to capture some of the images of such rapidly expanding fields as host-parasite recognition and biotechnology even at the risk of making the subject a bit conceptual. This book is intended to serve as a text for advanced undergraduate and graduate students of plant pathology and related disciplines and as a reference source for teachers, researchers, students, and technologists.
