Download or read book Studies on the Blackspot Disease of Roses Caused by Diplocarpon Rosae written by Peter John William Saunders and published by . This book was released on 1965 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of the life cycle of Diplocarpon rosae Wolf on roses and the effectiveness of fungicides on pathogenesis written by Emma Wanjiru Gachomo and published by Cuvillier Verlag. This book was released on 2005 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Blackspot of Rose Caused by Diplocarpon Rosae Lib Wolf Marssonina Rosae Trail and Its Control written by SHANKAR and published by . This book was released on 1999 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of the life cycle of Diplocarpon rosae Wolf on roses and the effectiveness of fungicides on pathogenesis written by and published by Cuvillier Verlag. This book was released on 2005-06-13 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Der Sternrußtau (Schwarzfleckigkeit), Hauptfruchtform Diplocarpon rosae Wolf, (Nebenfruchtform Marssonina rosae), ist eine häufige und weit verbreitete Krankheit an Freilandrosen. Bisher war weder die Entwicklung des Pilzes im Blattgewebe geklärt, noch waren in der Literatur fotografische Aufnahmen zur endophytischen Pilzentwicklung zu finden. Die Bekämpfung des Pilzes wird überwiegend mit Fungiziden durchgeführt. Die Untersuchungen vorliegender Arbeit umfassen sowohl mikroskopische Studien zur exakten Ausbreitung des Erregers im Rosenblatt als auch die Wirkung unterschiedlicher Fungizide, insbesondere Strobilurine und Azole, auf pilzliche Strukturen. Zunächst wurde die Aggressivität verschiedener Isolate aus Kenia und Deutschland getestet. An einem deutschen Isolat konnte der Entwicklungszyklus von D. rosae mit verschiedenen Färbetechniken lichtmikroskopisch sowie nach konventioneller Präparation elektronenmikroskopisch studiert werden: Nach der Konidienkeimung entsteht eine Keimhyphe, von der aus meist ein Appressorium gebildet wird. Auf der Wirtskutikula zeigt sich dann an der Stelle der späteren Penetration ein brauner Ring, der vermutlich melanisiert ist. Nach der Penetration bildet sich in der subkutikulären Region ein Infektionsvesikel. Primäre Hyphen durchdringen von diesem Infektionsvesikel ausgehend subkutikuläre und interzelluläre Wirtsgewebezonen. Subkutikuläre, interzelluläre und intramurale Hyphen bilden in den epidermalen Zellen Haustorien unterschiedlicher Formen. Interzelluläre Hyphen produzieren ebenfalls Haustorien im Palisadenparenchym. Intrazelluläre Hyphen entstehen erst kurz vor der Bildung der Reproduktionsorgane. Braune, stark ornamentierte Strukturen werden vom Pilz auf den überwinternden Blättern gebildet. Diese öffnen sich im Frühjahr des Folgejahres und entlassen dünnwandige Organe. In diesen subepidermalen Apothezien-ähnlichen Strukturen entstehen aber keine Ascosporen. Strobilurine hemmten die Konidienkeimung vollständig, während Azole einen weniger starken Einfluss auf die Keimung hatten. Dagegen zerstörten die Azole alle Pilzstrukturen im Inneren des Gewebes, auch wenn sie sich bereits gut etabliert hatten. Diese Reaktion konnte bei Einsatz der Strobilurine nicht so deutlich beobachtet werden. Alle Fungizidtests zur protektiven und kurativen Wirkung wurden mit jeweils 100 ppm reinem Wirkstoff durchgeführt. Die Untersuchungen zeigten, dass D. rosae eine hemibiotrophe Lebensweise besitzt: die biotrophe Phase besteht aus der Haustorienbildung und die nekrotrophe Phase aus der Bildung interzellulärer Hyphen. Die deutschen Witterungsbedingungen eignen sich offenbar nicht für eine subepidermale Apothezienbildung. Strobilurine zeigten nur nach protektiver Applikation eine Wirkung. Azole wirkten sowohl bei prä- als auch bei post-inokulativer Behandlung.
Download or read book The Black spot Disease of Roses and Its Control Under Greenhouse Conditions written by Eldon Wood Lyle and published by . This book was released on 1937 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Environment and of Selected Chemicals Upon the Development of Black Spot of Rose and of the Pathogen Diplocarpon Rosae Wolf written by J. Stanley Melching and published by . This book was released on 1966 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Resistance of Roses to Diplocarpon Rosae the Cause of Blackspot written by Cleone Hansen Geddes and published by . This book was released on 1952 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Environmental Factors and of Selected Chemicals Upon the Development of Black spot of Rose written by Joseph Stanley Melching and published by . This book was released on 1961 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flower Breeding and Genetics written by Neil O. Anderson and published by Springer Science & Business Media. This book was released on 2007-10-04 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: Floriculture is one of the fastest-growing sectors of commercial agriculture. This book provides a unique and valuable resource on the many issues and challenges facing flower breeders, as well as the industry at-large. Featuring contributions from 32 international authorities, it offers tools and directions for future crop domestication and enhancement as well as offers essential information for breeding a wide range of floriculture crops.
Download or read book Journal of Agricultural Research written by and published by . This book was released on 1933 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Black Spot of Roses written by Louis Melville Massey and published by . This book was released on 1947 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Rose Science written by Thomas Debener and published by Academic Press. This book was released on 2003-10-27 with total page 4142 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Rose Science brings together a wealth of information on the rose, long treasured for its captivating perfumes and splendid colors. Now, more than ever, science plays a central place in the production of this flower at the center of one of the world's biggest floricultural industries. A team of internationally renowned experts has contributed scores of articles, from the history of rose cultivation to discoveries in rose genetics. For researchers and students, as well as commercial rose growers and breeders, the Encyclopedia of Rose Science is an invaluable reference. The Encyclopedia of Rose Science is available online on ScienceDirect. The print edition price for this reference work does not include online access. For more information on pricing for access to the online edition, please review our Licensing Options. The richness and authority of Elsevier reference works is now lent valuable functionality and accessibility through the online launch of Elsevier Reference Works on ScienceDirect. Features: Extensive browsing and searching across subject, thematic, alphabetical, author and cited author indexes - as applicable to the work Basic and advanced search functionality within volumes, parts of volumes, or across the whole work Ability to build, save and re-run searches as well as combine saved searches Internal cross-referencing between articles in the work, plus dynamic linking to journal articles and abstract databases, making navigation flexible and easy All articles are available as full-text HTML files, and as PDF files that can be viewed, downloaded or printed out in their original print format A dedicated Reference Works navigation tab and homepage on ScienceDirect to enable easy linking from your OPAC or library website For more information about the Elsevier Reference Works on ScienceDirect Program, please visit: http://www.info.sciencedirect.com/reference_works. Presents complete, up-to-date information on over 35 subject areas of major importance to rose scientists Encyclopedic format provides for concise, readable entires, easy searches, and extensive cross-references Incorporates MODERN ROSES XI, published by the American Rose Society as International Cultivar Registration Authority for Roses, the most comprehensive list of roses of historical and botanical importance! High quality full-color production, with many figures and tables
Download or read book Compendium of Rose Diseases and Pests written by Ralph Kenneth Horst and published by American Phytopathological Society. This book was released on 2007 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resource added for the Landscape Horticulture Technician program 100014.
Download or read book Journal of Mycopathological Research written by and published by . This book was released on 2004 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Organic Gardener s Handbook of Natural Insect and Disease Control written by Barbara W. Ellis and published by Rodale. This book was released on 1996-05-15 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses pest control
Download or read book Floriculture and Ornamental Plants written by S. K. Datta and published by Springer. This book was released on 2022-07-06 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume on oilseed crops is developed as a part of a series on “Handbook of Agrobiodiversity: Conservation and Use of Plant Genetic Resources”. The handbook would function as a ready reference book for availability of PGR globally, along with specific source, wherefrom they can be procured, and used breeding programs, particularly to overcome various crop production constraints and to improve productivity and quality. The volume on floriculture and ornamental plants will be the source of basic information on origin and evolution and global dispersal of cultivated species of ornamentals. Presently, floriculture has established its credibility in improving income through increased productivity, generating employment and in enhancing exports. All research and developmental activities on ornamental crops are essentially multi-disciplinary in nature recognizing local issues as well as country issue. Floriculture is developing as an area of high technology based frontier interdisciplinary area on scientific excellence. Floriculture has progressed both scientifically and commercially due to concentrated efforts made on multidisciplinary research. It is developing as an area of high technology based frontier interdisciplinary area on scientific excellence. The volume will contain all information about different ornamentals. This shall be put together to develop a complete documentation of the results of the research and demonstrations conducted by different scientists. The volume will provide an illustrated horto-taxonomical account of important ornamental species and cultivars, germplasm status and their usages, propagation, nursery management, techno-economics, conventional breeding, induced mutagenesis, new varieties, cytogenetics, tissue culture, characterization of varieties, dehydration of flowers etc. This volume will give a coherent and concise account on recent developments. It will deal with all the important and relevant aspects of floriculture. The publication of this volume is planned to reveal multifarious activities done on different aspects of floriculture so that innovations made so far can be used judiciously for this sector. This book shall provide authoritative review account of many aspects of current interest and progress in the field of floriculture. The topics included in the book are interdisciplinary and cater not only classical floriculture but also relevant modern aspects. The book will provide valuable data on different aspects and will be widely accepted by by professional scientists, researchers, teachers, students, floriculturists, technocrats and planners. The volume will be an invaluable asset to floriculture scientists.
Download or read book Federal Register written by and published by . This book was released on 1975 with total page 1854 pages. Available in PDF, EPUB and Kindle. Book excerpt:
