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Author: Th. Jacobs
Publisher: Springer Science & Business Media
ISBN: 9401120048
Category : Science
Languages : en
Pages : 370
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Book Description
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.
Author: William Stuart
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 40
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Book Description
Author: Forbes, G
Publisher: International Potato Center
ISBN: 9290604409
Category :
Languages : en
Pages : 40
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Book Description
The present guide is designed to assist professionals and technicians in charge of evaluation trials designed to screen selected potato genotypes for resistance to this disease. The evaluation of breeding families, which is carried out under greenhouse or field conditions, can use the same methodology. The guide can help to organize trials, improve data collection and analysis and introduces new criteria for resistance measurement based on epidemiological principles.
Author: William Stuart
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 16
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Book Description
Author: Stuart Wale
Publisher: CRC Press
ISBN: 1840765089
Category : Technology & Engineering
Languages : en
Pages : 176
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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.
Author: W. J. Hooker
Publisher: International Potato Center
ISBN: 9780890540275
Category : Cooking
Languages : en
Pages : 156
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Book Description
Disease in the absence of infectious pathogens. Genetic abnormalities. Adverse environment. Nutrient imbalance. Disease in the presence of infectious pathogens. Fungi. Viruses. Mycoplasmas. Insect toxins. Nematodes. Aphids. Seed potato certification.
Author: William Stuart
Publisher:
ISBN:
Category : Potatoes
Languages : en
Pages : 29
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Book Description
Author: Christina A. Bormann
Publisher: Cuvillier Verlag
ISBN: 3865370519
Category :
Languages : en
Pages : 149
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Book Description
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: Jan W. Henfling
Publisher: International Potato Center
ISBN:
Category : Late blight of potato
Languages : en
Pages : 30
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Book Description
Author: David M. Spooner
Publisher:
ISBN: 9781943751082
Category : Solanum
Languages : en
Pages : 305
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Book Description
Solanum section Petota., which includes the cultivated potato (S. tuberosum) and its wild relatives, is distributed from the southwestern United States to central Argentina, Uruguay, and adjacent Chile. This taxonomic treatment includes all wild species of section Petota from northern South America, which includes Venezuela, Colombia, Ecuador, and Peru. It is the last of five taxonomic treatments of a monophyletic potato + tomato + section Etuberosum clade, including treatments of 1) wild potatoes from North and Central America, 2) wild potatoes from southern South America, and the close outgroup section Etuberosum, 3) cultivated potatoes, and 4) wild tomatoes. Wild species of section Petota include diploids (2n = 24), triploids (2n = 36), tetraploids (2n = 48), and hexaploids (2n = 72), with all of these levels represented in northern South America. We here recognize 60 species from section Petota in this region and partition them into five species groups, recognizing only about half of the species from northern South America relative to the most recent taxonomic treatments by J.G. Hawkes and C.M. Ochoa. We summarize recent morphological and molecular studies of species limits and their interrelationships, and provide a key to the species, descriptions, synonymies (including designations of lectotypes), illustrations, localities, disease resistances, and distribution maps for all species.
