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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 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 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 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 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 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 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.
Book Synopsis Wild Germplasm for Genetic Improvement in Crop Plants by : Muhammad Tehseen Azhar
Download or read book Wild Germplasm for Genetic Improvement in Crop Plants written by Muhammad Tehseen Azhar and published by Academic Press. This book was released on 2021-03-10 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wild Germplasm for Genetic Improvement in Crop Plants addresses the need for an integrated reference on a wide variety of crop plants, facilitating comparison and contrast, as well as providing relevant relationships for future research and development. The book presents the genetic and natural history value of wild relatives, covers what wild relatives exist, explores the existing knowledge regarding specific relatives and the research surrounding them and identifies knowledge gaps. As understanding the role of crop wild relatives in plant breeding expands the genetic pool for abiotic and biotic stress resistance, this is an ideal reference on this important topic. Provides a single-volume resource to important crops for accessible comparison and research Explores both conventional and molecular approaches to breeding for targeted traits and allows for expanded genetic variability Guides the development of hybrids for germplasm with increased tolerance to biotic and abiotic stresses
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 Durability of Disease Resistance by : Th. Jacobs
Download or read book Durability of Disease Resistance written by Th. Jacobs and published by Springer Science & Business Media. This book was released on 2012-02-02 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: From February 24 -28, 1992 an international symposium on Durability of Disease Resistance was held at the International Agricultural Centre in Wageningen, the Netherlands. The symposium, organized by the Department of Plant Breeding of Wageningen Agricultural University and the Centre for Plant Breeding and Repro duction Research, CPRO-DLO, was part of the DGIS funded programme Durable Resistance in Developing Countries. Without any form of prevention or protection nearly all crops will be seriously or even severely damaged by a range of pathogens. In modern agriculture man has been able to control many if not most pathogens using i) pesticides, ii) phyto sanitary methods such as control of seed and plant material in order to start a crop disease free, iii) agronomic measures such as crop rotation, iv) disease resis tance or combinations of these measures. Over the years the use of pesticides has increased enormously and so did the pro blems associated with pesticide use, such as environmental pollution and building of resistance and tolerance to these pesticides in the pathogens. The use of resis tance too increased strongly over the years and here too problems arose.
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 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.
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 Maize Germplasm by : Mohamed A. El-Esawi
Download or read book Maize Germplasm written by Mohamed A. El-Esawi and published by BoD – Books on Demand. This book was released on 2018-05-09 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maize is an important staple food crop worldwide. It is the third most important cereal crop after wheat and rice and is economically used for both livestock feeds and human consumption. The latest maize research has opened up new opportunities for crop improvement. This book brings together recent work and advances that have recently been made in the dynamic fields of genetic characterization, molecular breeding, genetic engineering technologies, and mapping of agronomic traits of global maize germplasm. It also provides new insights into and sheds new light regarding the current research trends and future research directions in maize. This book will provoke interest in many readers, researchers, and scientists, who can find this information useful for the advancement of their research works toward maize improvement.
