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Author: Isabel Alfonso Terry Publisher: Ewe Editorial Acad MIA Espa Ola ISBN: 9783659063145 Category : Languages : es Pages : 72
Book Description
La roya parda (Puccinia melanocephala Sydow & P Sydow) es una de las principales enfermedades de la cana de azucar en Cuba. El objetivo de este trabajo fue perfeccionar el Procedimiento Metodologico para evaluar esta enfermedad en el Esquema de Obtencion de Variedades de este cultivo y areas de produccion. Se caracterizaron los sintomas, organismo causal por metodos morfometricos y moleculares, se evaluaron y compararon la reaccion de un grupo de variedades y patrones de resistencia en diferentes ambientes evaluativos del pais, se perfeccionaron las escalas de reaccion hospedante-patogeno y la categorizacion del nivel de infeccion en produccion. Los estudios histologicos indicaron que algunos caracteres morfologicos pueden utilizarse como marcadores indirectos en la seleccion temprana. Se observo estabilidad en el nivel de reaccion de respuesta de los genotipos patrones para la variable Largo de las Pustulas y justifica su funcion como testigos patrones de resistencia. La siembra de variedades resistentes a roya parda unida a la implementacion de un Servicio Fitosanitario para la produccion (SEFIT) permite reducir el indice de infeccion nacional de esta enfermedad.
Author: Isabel Alfonso Terry Publisher: Ewe Editorial Acad MIA Espa Ola ISBN: 9783659063145 Category : Languages : es Pages : 72
Book Description
La roya parda (Puccinia melanocephala Sydow & P Sydow) es una de las principales enfermedades de la cana de azucar en Cuba. El objetivo de este trabajo fue perfeccionar el Procedimiento Metodologico para evaluar esta enfermedad en el Esquema de Obtencion de Variedades de este cultivo y areas de produccion. Se caracterizaron los sintomas, organismo causal por metodos morfometricos y moleculares, se evaluaron y compararon la reaccion de un grupo de variedades y patrones de resistencia en diferentes ambientes evaluativos del pais, se perfeccionaron las escalas de reaccion hospedante-patogeno y la categorizacion del nivel de infeccion en produccion. Los estudios histologicos indicaron que algunos caracteres morfologicos pueden utilizarse como marcadores indirectos en la seleccion temprana. Se observo estabilidad en el nivel de reaccion de respuesta de los genotipos patrones para la variable Largo de las Pustulas y justifica su funcion como testigos patrones de resistencia. La siembra de variedades resistentes a roya parda unida a la implementacion de un Servicio Fitosanitario para la produccion (SEFIT) permite reducir el indice de infeccion nacional de esta enfermedad.
Author: William Rodgers Bushnell Publisher: ISBN: Category : Science Languages : en Pages : 576
Book Description
Origins, specificity, structure, and physiology; Evolution at the center of origin; Taxonomy of the cereal rust fungi; Specificity; The formae speciales; Race specificity and methods of study; Genetics of the pathogen: host association; Histology and molecular biology of host: parasite; Virulence frequency dynamics of cereal rust fungi; The rust fungus; Controlled infection by Puccinia graminis f.sp. tritici under artificial conditions; Developmental ultrastructure of hyphae and spores; Development and physical of teliospores; Obligate parasitism and axenic culture; The host parsite interface; The rusted host; Effects of rust on plant development in relation to the translocation of inorganic and organic solutes.
Author: John Butt Publisher: Springer Science & Business Media ISBN: 1461583683 Category : Foreign Language Study Languages : en Pages : 533
Book Description
(abridged and revised) This reference grammar offers intermediate and advanced students a reason ably comprehensive guide to the morphology and syntax of educated speech and plain prose in Spain and Latin America at the end of the twentieth century. Spanish is the main, usually the sole official language of twenty-one countries,} and it is set fair to overtake English by the year 2000 in numbers 2 of native speakers. This vast geographical and political diversity ensures that Spanish is a good deal less unified than French, German or even English, the latter more or less internationally standardized according to either American or British norms. Until the 1960s, the criteria of internationally correct Spanish were dictated by the Real Academia Espanola, but the prestige of this institution has now sunk so low that its most solemn decrees are hardly taken seriously - witness the fate of the spelling reforms listed in the Nuevas normas de prosodia y ortograjia, which were supposed to come into force in all Spanish-speaking countries in 1959 and, nearly forty years later, are still selectively ignored by publishers and literate persons everywhere. The fact is that in Spanish 'correctness' is nowadays decided, as it is in all living languages, by the consensus of native speakers; but consensus about linguistic usage is obviously difficult to achieve between more than twenty independent, widely scattered and sometimes mutually hostile countries. Peninsular Spanish is itself in flux.
Author: C. Ricaud Publisher: Elsevier ISBN: 0444597670 Category : Technology & Engineering Languages : en Pages : 412
Book Description
An extensive volume of Sugarcane Diseases and their World Distribution (Vol. I) was published by Elsevier under the auspices of the International Society of Sugar Cane Technologists in 1961. The present volume was intended to be a new edition of the book, but so many changes were required that a new book was needed. Only three chapters have been kept with slight amendments. The other chapters have been completely re-written. In fact with changes in importance of major diseases, four diseases previously treated have been left out; on the other hand, three new topics have been included in the new book, two new diseases and a chapter on sugarcane quarantine.The first chapter gives a brief account of the anatomy, morphology and physiology of the sugarcane plant to facilitate terminology and especially for a better appreciation of the effect of disease on the growth of the crop. Diseases are extensively treated as in Volume I, with a very good description of their symptoms and variation under different conditions and severity, all well illustrated by black and white figures and in a set of colour plates at the end of the book which will prove of valuable help for identification. The causal agents of the diseases are described giving synonyms, cultural characteristics, isolation methods and present knowledge on race variation, an aspect on which there has been quite an advance in knowledge since Volume I was published. New techniques of diagnosis are also given. Advances in research on the diseases over the last 25 years are well covered and supported by an extensive bibliography at the end of each chapter.The book has been edited by people having first hand experience in the field and in research on these diseases. Authors have been selected from among the most knowledgeable all over the sugar cane world, especially with due regard to the importance of the different diseases in their countries.The book should prove of immense value to those concerned with practical aspects of plant disease control in the field: pathologists, agronomists and crop specialists, including consultants, to those concerned with quarantine of the crop, for university lectures and students, and research scientists.In a pre-publication review D.J. Heinz and S.A. Ferreira of the Hawaiian Sugar Planters' Association stated: ``Much has changed and new information generated since the original version of this book was published in 1961. This new edition incorporates most of it, providing both the laboratory and field sugarcane pathologist a complete and authoritative guide to the major sugarcane diseases of the world. It is the best single book available on sugarcane diseases.''
Author: Park S. Nobel Publisher: Univ of California Press ISBN: 9780520231573 Category : Nature Languages : en Pages : 304
Book Description
"There is nothing in the world like this book. It should be in every library and on the bookshelves of all those interested in cacti. The book will be an important resource for plant physiology, agronomy, and horticulture classes at both the undergraduate and graduate level."—Bruce Smith, Brigham Young University "Cacti: Biology and Uses is a landmark publication of one of the world's most unique group of plants. Park Nobel, a leading authority on succulent plants, has assembled a collection of contributions that spans a wide range of issues extending from basic systematics, anatomy, physiology and ecology to considerations of conservation and human uses of this diverse group of plants. This nicely-produced and well-illustrated volume provides a resource that will be of great use to a wide range of scientists, practitioners, and enthusiasts of this plant group."—Harold Mooney, Paul S. Achilles Professor of Environmental Biology, Stanford University
Author: Isabel Alfonso Terry
Author: Isabel Alfonso Terry
Author: Joaquín Montalván Delgado
Author: Sandoval Ramírez Sandoval R.
Author: William Rodgers Bushnell
Author: John Butt
Author: Dean Humboldt Rose
Author: C. Ricaud
Author: Park S. Nobel
Author: 
Author: United States. Dept. of Agriculture