The Soil/plant/pathogen Aspects of Potato Late Blight PDF Download
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Author: Hilary S. Mayton
Publisher:
ISBN:
Category :
Languages : en
Pages : 238
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Book Description
Oospores of Phytophthora infestans produced in vitro and in planta, were exposed to a variety of environments and their survival was assessed. Viability of oospores as measured by plasmolysis declined slightly over a period of 18 months whether they were stored in water at 4°C, in soil at 18°C, or in soil under natural field conditions. In comparison, viability as measured by germination was lower overall, but appeared to increase after storage in soil. Oospores produced in planta buried in the field were capable of infecting both tomato and potato leaflets when recovered after eighteen months, including two winters. Soil samples collected from the central highlands of Mexico (center of diversity for Phytophthora infestans) were evaluated for suppressive activity to P. infestans. A New York soil was used for comparative analysis. Even though both mating types are known to cohabit these regions of Mexico no evidence of oospores was found in the soil samples. No significant differences were observed between the Mexican and New York soils in terms of their influence on survival and infectivity of P. infestans. Bacterial diversity in the different soil types was investigated using terminal restriction fragment length polymorphism analysis (T-RFLPs). Foliar and tuber resistance to Phytophthora infestans were evaluated in a mapping population (n = 94) developed between two Solanum tuberosum breeding lines, NY121 x NY115. Foliar disease severity of the progeny clones was measured by the area under the disease progress curve (AUDPC) in field tests in 2004 and 2005. Correlation analysis of AUDPC values with amplified fragment length polymorphism (AFLP) molecular markers revealed that 56 %, 53 %, and 52 % of the quantitative phenotypic variance for resistance were associated with markers PCTMATC 184, PATMATA 171, and PATMACT 236, respectively, located on a chromosome V homolog derived from NY121 (p
Author: Hilary S. Mayton
Publisher:
ISBN:
Category :
Languages : en
Pages : 238
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Book Description
Oospores of Phytophthora infestans produced in vitro and in planta, were exposed to a variety of environments and their survival was assessed. Viability of oospores as measured by plasmolysis declined slightly over a period of 18 months whether they were stored in water at 4°C, in soil at 18°C, or in soil under natural field conditions. In comparison, viability as measured by germination was lower overall, but appeared to increase after storage in soil. Oospores produced in planta buried in the field were capable of infecting both tomato and potato leaflets when recovered after eighteen months, including two winters. Soil samples collected from the central highlands of Mexico (center of diversity for Phytophthora infestans) were evaluated for suppressive activity to P. infestans. A New York soil was used for comparative analysis. Even though both mating types are known to cohabit these regions of Mexico no evidence of oospores was found in the soil samples. No significant differences were observed between the Mexican and New York soils in terms of their influence on survival and infectivity of P. infestans. Bacterial diversity in the different soil types was investigated using terminal restriction fragment length polymorphism analysis (T-RFLPs). Foliar and tuber resistance to Phytophthora infestans were evaluated in a mapping population (n = 94) developed between two Solanum tuberosum breeding lines, NY121 x NY115. Foliar disease severity of the progeny clones was measured by the area under the disease progress curve (AUDPC) in field tests in 2004 and 2005. Correlation analysis of AUDPC values with amplified fragment length polymorphism (AFLP) molecular markers revealed that 56 %, 53 %, and 52 % of the quantitative phenotypic variance for resistance were associated with markers PCTMATC 184, PATMATA 171, and PATMACT 236, respectively, located on a chromosome V homolog derived from NY121 (p
Author: Muriel J. O'Brien
Publisher:
ISBN:
Category : Potatoes
Languages : en
Pages : 92
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Book Description
Author: William Hope Martin
Publisher:
ISBN:
Category : Late blight of potato
Languages : en
Pages : 32
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Book Description
Author: Fred Carlton Stewart
Publisher:
ISBN:
Category : Late blight of potato
Languages : en
Pages : 16
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Book Description
Author: B. Michael Cooke
Publisher: Springer Science & Business Media
ISBN: 1402045816
Category : Science
Languages : en
Pages : 584
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Book Description
Plant disease epidemiology is a dynamic science that forms an essential part of the study of plant pathology. This book brings together a team of 35 international experts. Each chapter deals with an essential component of the subject and allows the reader to fully understand how each exerts its influence on the progress of pathogen populations in plant populations over a defined time scale. This edition has new, revised and updated chapters.
Author: Jan W. Henfling
Publisher: International Potato Center
ISBN:
Category : Late blight of potato
Languages : en
Pages : 30
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Book Description
Author: Stuart Wale
Publisher: CRC Press
ISBN: 1840765089
Category : Science
Languages : en
Pages : 179
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Book Description
Covering the most important pathogens, this handbook provides clear, concise descriptions of the symptoms and cycles of diseases and disorders, and the pests that commonly prey on potato crops, their distribution and importance, and advice on their control. The text is illustrated with some 235 superb color photographs of affected crops to aid in the rapid and accurate identification of disease. It provides a practical reference for professionals and students involved with potato production, handling and storage worldwide. Diseases and Pests covered include: Potato early blight, Gray mould, Black dot, Ring rot, Blackleg, Soft rot, Pit rot, Dry rot and wilt, Violet root rot, Silver scurf, Aster yellows, Witches broom, Pocket rot, Gangrene, Pink rot, Potato late blight, Skin spot, Spraing, Mild Mosaic, Sev. Mosaic, Net Necrosis, Watery wound rot, Leak, Brown rot, Stem canker, Black Scurf, White mould, Powdery scab, Common scab, Wart, Spraing, Verticillium wilt.
Author: Hugo Campos
Publisher: Springer Nature
ISBN: 3030286835
Category : Science
Languages : en
Pages : 524
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Book Description
This book is open access under a CC BY 4.0 license. This book provides a fresh, updated and science-based perspective on the current status and prospects of the diverse array of topics related to the potato, and was written by distinguished scientists with hands-on global experience in research aspects related to potato. The potato is the third most important global food crop in terms of consumption. Being the only vegetatively propagated species among the world’s main five staple crops creates both issues and opportunities for the potato: on the one hand, this constrains the speed of its geographic expansion and its options for international commercialization and distribution when compared with commodity crops such as maize, wheat or rice. On the other, it provides an effective insulation against speculation and unforeseen spikes in commodity prices, since the potato does not represent a good traded on global markets. These two factors highlight the underappreciated and underrated role of the potato as a dependable nutrition security crop, one that can mitigate turmoil in world food supply and demand and political instability in some developing countries. Increasingly, the global role of the potato has expanded from a profitable crop in developing countries to a crop providing income and nutrition security in developing ones. This book will appeal to academics and students of crop sciences, but also policy makers and other stakeholders involved in the potato and its contribution to humankind’s food security.
Author: A.J. Haverkort
Publisher: Springer Science & Business Media
ISBN: 9780792334125
Category : Cooking
Languages : en
Pages : 396
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Book Description
Proceedings of the 2nd International Potato Modeling Conference, held in Wageningen, 17--19 May, 1994
Author: Yuri Dyakov
Publisher: Elsevier
ISBN: 0080469337
Category : Science
Languages : en
Pages : 497
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Book Description
This book offers a collection of information on successive steps of molecular ‘dialogue’ between plants and pathogens. It additionally presents data that reflects intrinsic logic of plant-parasite interactions. New findings discussed include: host and non-host resistance, specific and nonspecific elicitors, elicitors and suppressors, and plant and animal immunity. This book enables the reader to understand how to promote or prevent disease development, and allows them to systematize their own ideas of plant-pathogen interactions. * Offers a more extensive scope of the problem as compared to other books in the market* Presents data to allow consideration of host-parasite relationships in dynamics and reveals interrelations between pathogenicity and resistance factors* Discusses beneficial plant-microbe interactions and practical aspects of molecular investigations of plant-parasite relationships* Compares historical study of common and specific features of plant immunity with animal immunity
