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Studies On Late Blight Of Tomato Lycopersicon Esculentum Mill Caused By Phytophthora Infestans Mont De Bary
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Book Synopsis Studies on Late Blight of Tomato (Lycopersicon Esculentum Mill) Caused by Phytophthora Infestans (Mont.) de Bary by : Minakshi Sharma
Download or read book Studies on Late Blight of Tomato (Lycopersicon Esculentum Mill) Caused by Phytophthora Infestans (Mont.) de Bary written by Minakshi Sharma and published by . This book was released on 1999 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies on Late Blight of Tomato (Lycopersicon Esculentum Mill.) Caused by Phytophthora Infestans (Mont.) de Bary by :
Download or read book Studies on Late Blight of Tomato (Lycopersicon Esculentum Mill.) Caused by Phytophthora Infestans (Mont.) de Bary written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Partial Resistance of Tomatoes Against Phytophthora Infestans, the Late Blight Fungus by : L. J. Turkensteen
Download or read book Partial Resistance of Tomatoes Against Phytophthora Infestans, the Late Blight Fungus written by L. J. Turkensteen and published by . This book was released on 1973 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The resistance of tomatoes increased considerably until at least 8 weeks after seeding. Partial resistance of W. Va 700 against the 1-t-pathotype of P. infestans is based on a single gene, here named Ph 2.
Book Synopsis Characterization of Novel Sources of Resistance to Phytophthora Infestans (late Blight) in Organic Fresh Market Tomato by : Rahul Pathinettil Raj
Download or read book Characterization of Novel Sources of Resistance to Phytophthora Infestans (late Blight) in Organic Fresh Market Tomato written by Rahul Pathinettil Raj and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tomato (Lycopersicon esculentum) is the most widely grown vegetable food crop in the world. Late blight (LB) caused by Phytophthora infestans (Mont.) de Bary is a major cause of crop loss in tomato and potato around the globe (Foolad et al. 2008 & Nowicki et al. 2013). LB control by cultural practices alone is insufficient (Chen et al. 2008). In addition, fungicide measures cannot be used when tomatoes are harvested for the fresh market leading to fungicide residues (Horneburg and Myers, 2012). The project started with 7 late blight resistant genotypes as using parents for initial crosses. ...
Book Synopsis Tomato Late-blight Rot, a Serious Transit and Market Disease by : Glen Blaine Ramsey
Download or read book Tomato Late-blight Rot, a Serious Transit and Market Disease written by Glen Blaine Ramsey and published by . This book was released on 1931 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Inheritance of Tomato Late Blight Resistance in Lycopersicon Hirsutum LA1033 by :
Download or read book Inheritance of Tomato Late Blight Resistance in Lycopersicon Hirsutum LA1033 written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensive efforts to control late blight of tomato and potato, caused by Phytophthora infestans (Mont.) de Bary, through incorporation of single resistance genes have been thwarted by the rapid development of virulent pathogen strains. In contrast, multigenic late blight resistance in potato has proven durable over decades of use. Lycopersicon hirsutum Kunth LA1033 is highly resistant to P. infestans, and other studies have suggested that this resistance is multigenic. We evaluated the inheritance of late blight resistance in LA1033 using traditional methods and quantitative trait analysis. A BC3F2 population was derived from L. esculentum Miller NC215E x L. hirsutum LA1033 and was screened for late blight resistance using detached leaf tests. BC3F3 progeny were evaluated in the field to verify detached leaf test results. Bulked segregant analysis was conducted on the most resistant and most susceptible BC3F2 plants to identify AFLP markers linked to resistance. A BC1F1 population of 284 individuals was also derived from L. esculentum NC215E x L. hirsutum LA1033. This population was evaluated for late blight resistance in the field and with detached leaf tests that were scored with a four-point rating system and the Horsfall-Barratt scale. A linkage map was constructed based on 155 BC1F1 individuals with 231 AFLP and two morphological markers. Quantitative trait analysis was conducted using the following four methods: simple linear regression, interval mapping, composite interval mapping, and multiple interval mapping. Segregation of late blight resistance in the BC3F2 individuals indicated that the BC3F1 plant carried two genes conferring late blight resistance; however, minor genes may have been lost in the development of the BC3F1 or may not have been detected. An AFLP marker was identified in the BC3F2 population which clearly segregated with resistance. I.
Book Synopsis Integrated Disease Management of Tomato Late Blight Disease by : Krishna K. Shrestha
Download or read book Integrated Disease Management of Tomato Late Blight Disease written by Krishna K. Shrestha and published by . This book was released on 2003 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Partial Resistance of Tomatoes Against Phytophthora Infestans, the Late Blight Fungus by :
Download or read book Partial Resistance of Tomatoes Against Phytophthora Infestans, the Late Blight Fungus written by and published by . This book was released on 1973 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Integrated Disease Management of Tomato Late Blight Disease by : Krishna K. Shrestha
Download or read book Integrated Disease Management of Tomato Late Blight Disease written by Krishna K. Shrestha and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis INVESTIGATIONS ON PHYTOPHTHORA INFESTANS (MONT) DEBARY by : L. V. BUSCH
Download or read book INVESTIGATIONS ON PHYTOPHTHORA INFESTANS (MONT) DEBARY written by L. V. BUSCH and published by . This book was released on 1949 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis How To Manage Tomato Late Blight by : Getachew Gudero
Download or read book How To Manage Tomato Late Blight written by Getachew Gudero and published by . This book was released on 2018-10-20 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Organically-grown Tomato (Lycopersicon Esculentum Mill.) by : Afrah Eltayeb Mohammed
Download or read book Organically-grown Tomato (Lycopersicon Esculentum Mill.) written by Afrah Eltayeb Mohammed and published by . This book was released on 2010 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Enhancing Integrated Management of Tomato Late Blight in Organic Systems by : Kuantin Wu
Download or read book Enhancing Integrated Management of Tomato Late Blight in Organic Systems written by Kuantin Wu and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Late blight of tomato is caused by the oomycete, Phytophthora infestans (Mont.) de Bary. This disease is a major agricultural concern worldwide and management requires careful integration of cultural, genetic, and chemical strategies. Creating additional complexity for organic growers, late blight management decisions must also adhere to strict regulatory standards. Due to a limited number of commercially resistant tomato varieties available and an increasing push for reduction of copper-based fungicides, biopesticides can play an important role within sustainable crop protection management regimes related to the mitigation of this disease. In this dissertation, I identified key considerations for organic growers in managing late blight. Through surveys, organic growers were found to heavily emphasize crop diversity, yield, and soil health in their management of late blight, providing evidence that the development and communication of recommendations with respect to the use of biopesticides within integrated disease management strategies should be placed in the context of these other organic farming system goals. One method to expand the use of organic biopesticides and augment other strategies for late blight management is to increase knowledge of biopesticide efficacy and modes of actions. Furthermore, Extension education regarding late blight can be enhanced through emphasizing pathogen biology and the high risks involved with this disease across the broader tomato and potato production community. The reliance of copper fungicides in organic systems raises concerns about resistance within the pathogen population. I evidenced that while contemporary P. infestans isolates are variable in their response to low concentrations of copper hydroxide, they are sensitive to field relevant doses and continue to be an effective management strategy. Complete tolerance, or resistance, was not detected among the pathogen population explored in Wisconsin. To evaluate alternative modes of action that could contribute to resistance management while offering a safer chemical alternative, a plant-based commercial essential oil biopesticide, EF400, was considered. This compound, which is a mixture of rosemary, peppermint, and clove oils, showed direct activity against P. infestans mycelial growth in culture and on leaf surfaces. Furthermore, EF400 induced a marker gene associated with the jasmonic acid pathway in tomato defenses (pin2) with greatest induction at 6 hours post application. These results suggested that this particular blend of essential oils can not only act directly to inhibit P. infestans but may also activate tomato host defense signaling to confer induced systemic resistance. However, its ability to protect whole plants against late blight was not comparable to copper hydroxide. With increasing need for agricultural cropping systems that can withstand climate change and evolving plant pathogens, this research supports effective and sustainable disease management recommendations for growers working in organic or low-input systems and stakeholders in the emerging field of biopesticides.
Book Synopsis Inheritance of Tomato Late Blight Resistance from 'Richter's Wild Tomato' and Evaluation of Late Blight Resistance Gene Combinations in Adapted Fresh Market Tomato Backgrounds by :
Download or read book Inheritance of Tomato Late Blight Resistance from 'Richter's Wild Tomato' and Evaluation of Late Blight Resistance Gene Combinations in Adapted Fresh Market Tomato Backgrounds written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Late blight, caused by the oomycete Phytophthora infestans (Mont.) de Bary, is a destructive disease of tomato worldwide. Originating in the highlands of central Mexico, through migration, mutation, and sexual recombination, this pathogen has proven mobile and highly variable. Three monogenic R genes (Ph-1, Ph-2, and Ph-3) for resistance to late blight have been identified in tomato. However, P. infestans isolates which overcome each of these individual R genes have been documented. The objectives of this research were to characterize the inheritance of late blight resistance in the home garden tomato 'Richter's Wild Tomato', to determine if this resistance is allelic to any of the three previously identified resistance sources, and to evaluate late blight resistance of R gene F1 hybrid combinations relative to individual R genes. 'Richter's Wild Tomato' was crossed with NC215E-1, a late blight susceptible fresh market breeding line, and evaluation of derived BC1F2, BC2F2, and BC3F1 populations indicated single gene inheritance of late blight resistance. Evaluation of an F2 population derived from the cross 'Richter's Wild Tomato' x 'Legend' (Ph-2) indicated that the monogenic resistance conferred by 'Richter's Wild Tomato' was allelic to Ph-2. Combinations of Ph-2, either from 'Richter's Wild Tomato' or 'Legend', and a fresh market line possessing Ph-3 displayed superior resistance versus individual R genes and other R gene combinations in North Carolina field trials under natural inoculation. Combined resistance has the potential to not only provide a superior level of resistance, but to also be more stable over time.
Book Synopsis RESEARCH ADVANCES IN VEGETABLE SCIENCE by : Humberto González Rodríguez
Download or read book RESEARCH ADVANCES IN VEGETABLE SCIENCE written by Humberto González Rodríguez and published by American Academic Press. This book was released on 2018-11-01 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book Research Advances in Vegetable Science is an outstanding contribution of the authors in the field of advancement of the vegetable researches all over the World. The book entitles from the seed germination and its necessity of establishment in the new environment where physiological responses are influenced by both biotic and abiotic factors. Priming is a simple technique that not only helps in proper germination but aid in seedling establishment. Phonotypical and physiological responses of different vegetable crops are of significant importance in relation to factors like nutrients, salinity, disease-pest attacks. Physiological and biochemical basis of tolerance to salinity is very important that may help in the evaluation and selection of pipeline hybrids and parents lines using a novel technique. Biotic factors are major constraints in crop production, so proper management strategies and control measures must be taken for potential outcome. In this book, a special emphasis was given on food value and food chemistry of different vegetable crops. Major aspects like nutritional value of fresh vegetable as well as food value, post-harvest physiology and processing, storage and food quality, medicinal values, food chemistry and food biotechnology have been discussed in lucid manner.
Book Synopsis Disease Problems in Vegetable Production, 2nd Ed. by : Satish K. Gupta
Download or read book Disease Problems in Vegetable Production, 2nd Ed. written by Satish K. Gupta and published by Scientific Publishers. This book was released on 2018-04-01 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book entitled “Disease Problems in Vegetable Production” 2nd edition, is specifically prepared for under and post graduate students in Agriculture/ Horticulture and range of professionals including teachers, researchers, extension plant pathologists and elite vegetable growers. The book gives a comprehensive over-view of economic importance, symptomatology, etiology, pre-disposing factors and management of vegetable diseases employing cultural, biological, host resistance, plant extracts and chemical methods as such and in anintegrated approach so that the ravages due to the diseases remain below economic threshold level. A total of 19 chapters dealing with important diseases of vegetables like potato, tomato, crucifers, cucurbits, pea, French bean, chillies and bell pepper, onion, garlic, eggplant, carrot, sugar beet, colocasia, okra and leafy vegetables have been compiled in this book. Two new chapters on diseases of ginger and diseases of vegetables under protected cultivation as well as some important diseases of different vegetable crops left out in the first edition have been added in this edition. Besides, the book also includes chapters on common pathogens of vegetable crops, disease problems in nurseries, post harvest diseases and diseases caused by nematodes. All chapters have been updated in the light of available literature up to 2017. Symptoms, disease cycles of important diseases and different structures of pathogen(s) have also been given in the book that will not only help in better diagnosis and understanding of the perpetuation and spread of the causal pathogens but will also help in the management of these diseases more effectively. Coloured photographs of disease symptoms have also been included for easy identification of vegetable diseases.
Book Synopsis Boyce Thompson Institute Collected Research Papers by :
Download or read book Boyce Thompson Institute Collected Research Papers written by and published by . This book was released on 1923 with total page 1022 pages. Available in PDF, EPUB and Kindle. Book excerpt:
