Author: Willi WickiPublisher:
ISBN:
Category :
Languages : en
Pages : 103
Book Description
Resistance to Leaf and Glume Blotch (Septoria Nodorum Berk.) and Sensitivity in Vitro to Pathogen Metabolites in Winter Wheat (Triticum Aestivum L.)
Author: Willi WickiResistance to Leaf and Glume Bloch (Septoria Nodorum Berk.) and Sensitivity in Vitro to Pathogen Metabolites in Winter Wheat (Triticum Aestivum L.)
Author: Willi WickiThe Septoria Diseases of Wheat
Author: Z. EyalPublisher: Cimmyt
ISBN:
Category : Septoria
Languages : en
Pages : 58
Book Description
Role of Seedborne Stagonospora Nodorum in the Epidemiology of Septoria Nodorum Blotch of Winter Wheat in New York
Author: Denis Anthony ShahPathogenesis of Septoria Nodorum (Berk) Berk. on Wheat Cultivars Varying in Resistance to Glume Blotch
Author: Mary Louise StraleyPublisher:
ISBN:
Category : Phytopathogenic fungi
Languages : en
Pages : 198
Book Description
Epidemiological and Biological Aspects of Septoria Nodorum Berk., a Pathogen of Wheat in Eastern Washington
Author: Jose Mauricio FernandesPublisher:
ISBN:
Category : Seed pathology
Languages : en
Pages : 254
Book Description
Glume blotch of wheat, a disease incited by Septoria nodorum (=Leptosphaeria nodorum), was monitored through a succession of surveys during the period 1982-84 in eastern Washington . Findings revealed that infection in wheat occurs soon after seeddling emergence . Infection levels, varying upward of 70% in one of the two years, remained consistently high from November to March, declined somewehat in April-May and dropped dramatically in late May and June . It is speculated that such a decline is attributable to progressively fewer number of rainy days, lower relative humidities, shorter dew periods and elevating temperatures as the spring seasion advances . The viability of conidia of Septoria nodorum exposed on plastic strip underwent a corresponding decline with the advent of warmer, drier weather. The source of inoculum associated with the onset of the disease was linked to the presence of spore bearing pycnidia on debris of the previous wheat crop . The perfect stage of the fungus was never found on wheat or graminicolous hosts around and within wheat fields. Glume blotch effects on kernel weight of wheat was highly correlated with nodal infection . Substantial yield reduction ocurred when disease was imposed at the flowerig stage .According to criteria established by studying the relationship of organ infection and reduction in kernel weight it seemed unlikely that glume blotch is a disease of economic threat to the wheat industry in the Palouse. A new technique, involving the injection of inoculum into culms, was developed for evaluating cultivar reaction to glume blotch. A study of the survival of the fungus in hosts other than wheat indicated that downy chess (Bromus tectorum) may seerve as an effective alternative host. This host may play a role in the epidemiology of the disease in eastern Washington as well. Notwithstanding the results reported elsewhere, virulence of locally collected wheat isolates of Septoria nodorum, was not altered by ten consecutive passages through barley.
Bibliography of Agriculture
Author: Durability of Disease Resistance
Author: Th. JacobsPublisher: Springer Science & Business Media
ISBN: 9401120048
Category : Science
Languages : en
Pages : 370
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.
Wheat Diseases and Their Management
Author: Yeshwant Ramchandra MehtaPublisher: Springer
ISBN: 3319064657
Category : Science
Languages : en
Pages : 265
Book Description
Wheat Diseases and Their Management addresses biotic and abiotic constrains to wheat production. Besides detailed illustrations and descriptions of the most important diseases of wheat in the world, it offers an updated view on the reemergence of some old diseases and the occurrence of new races of the pathogen. It deals with the sustainability of wheat production through precision agriculture and focuses on the importance of conservation tillage. The book also deals with pillars of integrated disease management which would be eco-friendly and reduce severity of diseases and yield losses, with acquired Latin-American experiences of more than 40 years.
Current Trends in Plant Disease Diagnostics and Management Practices
Author: Pradeep KumarPublisher: Springer
ISBN: 3319273124
Category : Science
Languages : en
Pages : 471
Book Description
Plant diseases play an important role on our daily lives. Most of plant diseases are visible and are caused by biotic and/or abiotic factors. Symptoms are usually the results of a morphological change, alteration or damage to plant tissue and/or cells due to an interference of the plant’s metabolism. All basic structures of vascular plants are subject to attack by pathogens. The failure in accurate disease diagnosis and management may lead to huge losses in plant production and related commodities, which causes nutritional food scarcity. Typically, the appearance of a biotic symptom will indicate the relatively late stage of an infection and/or colonization of a pathogen. Expert detection, accurate diagnosis, and timely management play a significant role in keeping plants free from pathogens. In this book expert scholars share their research knowledge and key literature which are vital toward the diagnosis of plant diseases across the globe, addressing traditional plant pathology techniques, as well as advanced molecular diagnostic approach.