Identification and Seed Transmission Studies of Viruses Commonly Attacking Field Legumes PDF Download

Author: C. Villanueva Bautista
Publisher:
ISBN:
Category :
Languages : en
Pages : 100

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Author: K. Subramanya Sastry
Publisher: Springer Science & Business Media
ISBN: 8132208137
Category : Medical
Languages : en
Pages : 343

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Book Description
Seeds provide an efficient means in disseminating plant virus and viroid diseases. The success of modern agriculture depends on pathogen free seed with high yielding character and in turn disease management. There is a serious scientific concern about the transmission of plant viruses sexually through seed and asexually through plant propagules. The present book provides the latest information along with the total list of seed transmitted virus and viroid diseases at global level including, the yield losses, diagnostic techniques, mechanism of seed transmission, epidemiology and virus disease management aspects. Additional information is also provided on the transmission of plant virus and virus-like diseases through vegetative propagules. It is also well known that seed transmitted viruses are introduced into new countries and continents during large-scale traffic movements through infected germplasm and plant propogules. The latest diagnostic molecular techniques in different virus-host combinations along with disease management measures have been included. The book shall be a good reference source and also a text book to the research scientists, teachers, students of plant pathology, agriculture, horticulture, life sciences, green house managers, professional entrepreneurs, persons involved in quarantines and seed companies. This book has several important features of seed transmitted virus diseases and is a good informative source and thus deserves a place in almost all university libraries, seed companies and research organizations.

Author: Shimul Das
Publisher:
ISBN:
Category : Legumes
Languages : en
Pages : 0

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Book Description
Vegetable legumes are largely cultivated by resource-poor rural households in Bangladesh for domestic consumption as a source of protein and micronutrients and to sell in local markets for family income. Sustainable cultivation of these crops in subsistence farming systems in Bangladesh is constrained by a wide range of biotic and abiotic factors, including viral diseases. This study was undertaken to (i) characterize Bean common mosaic virus (BCMV) from Rajma beans (RB, Phaseolus vulgaris), country beans (CB, Lablab purpureus) and yard-long bean (YLB, Vigna unguiculata (L.) Walp. ssp. sesquipedalis Verdc.) and Cowpea mild mottle virus (CPMMV) from CB and YLB and (ii) identify sources of resistance to the pea aphid (Acyrthosiphon pisum) in Lentil (Lens culinaris) germplasm. Total RNA from candidate samples were subjected to high-throughput Illumina sequencing to generate near full-length genome sequences of BCMV and CPMMV. Pairwise comparisons of genome sequences and phylogenetic analysis with corresponding viral sequences provided new insights on the genetic variability of BCMV and CPMMV in vegetable legume crops commonly grown by farmers. An analysis of pods from BCMV-and CPMMV-infected CB and YLB showed that virus-infected plants produce nutritionally poor-quality pods. Seed transmission studies have shown that seed lots from local markets can play epidemiologically important role in the field-spread of BCMV and CPMMV. The results will help to establish robust phytosanitary measures for the supply of certified seeds to smallholder farmers within Bangladesh. Experiments were conducted to identify genetic resources and genes associated with resistance to the pea aphid (Acyrthosiphon pisum) in 188 lentil (Lens culinaris) accessions of the USDA Single Plant Core Collection. A cluster analysis associated with the mean number of adults, nymphs and total aphids developed on lentil germplasm lines identified several lines with significant levels of resistance to the aphid. The genotyping by sequencing-based Single Nucleotide Polymorphism analyses were used for genome-wide association mapping of fifteen candidate genes or quantitative trait loci associated with aphid resistance. The genetic resources identified in this study is useful for breeding programs to improve resistance against the pea aphid as a pest and to reduce the spread of aphid-transmitted viruses.

Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 880

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Author: S. E. Albrechtsen
Publisher: CABI
ISBN: 1845931483
Category : Science
Languages : en
Pages : 282

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Book Description
This practical guide covers the commonly used detection methods for seed-transmitted viruses and viroids that affect both tropical and temperate crops. It contains 25 complete step-by-step procedures for biological, serological and molecular techniques to detect and identify such viruses. Combining helpful practical notes with more detailed explanations of the principles behind the techniques, the book describes the general characteristics of seed-transmitted viral diseases and discusses outlines for the organization and interpretation of seed health assays. The techniques reviewed are also applicable to non-seed-transmitted viral agents.

Author: Ravindra Kumar
Publisher: Springer Nature
ISBN: 9813290463
Category : Technology & Engineering
Languages : en
Pages : 860

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Book Description
The global population is increasing rapidly, and feeding the ever-increasing population poses a serious challenge for agriculturalists around the world. Seed is a basic and critical input in agriculture to ensure global food security. Roughly 90 percent of the crops grown all over the world are propagated by seed. However, seed can also harbour and spread pathogens, e.g. fungi, bacteria, nematodes, viruses etc., which cause devastating diseases. Seed-borne pathogens represent a major threat to crop establishment and yield. Hence, timely detection and diagnosis is a prerequisite for their effective management. The book "Seed-Borne Diseases of Agricultural Crops: Detection, Diagnosis & Management" addresses key issues related to seed-borne/transmitted diseases in various agricultural crops. Divided into 30 chapters, it offers a comprehensive compilation of papers concerning: the history of seed pathology, importance of seed-borne diseases, seed-borne diseases and quarantine, seed health testing and certification, detection and diagnosis of seed-borne diseases and their phytopathogens, host-parasite interactions during development of seed-borne diseases, diversity of seed-borne pathogens, seed-borne diseases in major agricultural crops, non-parasitic seed disorders, mechanisms of seed transmission and seed infection, storage fungi and mycotoxins, impact of seed-borne diseases on human and animal health, and management options for seed-borne diseases. We wish to thank all of the eminent researchers who contributed valuable chapters to our book, which will be immensely useful for students, researchers, academics, and all those involved in various agro-industries.

Author: T. W. Mew
Publisher: Int. Rice Res. Inst.
ISBN: 9712200493
Category : Technology & Engineering
Languages : en
Pages : 121

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Book Description
Rice seed health and quarantine; The rice plant and its environment; Equipment; Samples and sampling; dry seed inspection; Fungi; Bacteria; Nematodes; Viruses and mycoplasmalike organisms; Field inspection; Seed treatment; Weed seed; Insect pests; Fungal pathogens; Bacterial pathogens; Nematode pest; Organisms causing grain discoloration and damage.

Author: Gad Loebenstein
Publisher: Academic Press
ISBN: 0123943140
Category : Gardening
Languages : en
Pages : 596

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Book Description
This volume of Advances in Virus Research focuses on mycoviruses. The authors and reviews represent the most current and cutting-edge research in the field. A broad range of research is presented from research experts. Contributions from leading authorities Informs and updates on all the latest developments in the field

Author:
Publisher:
ISBN:
Category : Philippines
Languages : en
Pages : 610

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Book Description

Author: Richard Ellis Ford Matthews
Publisher: Gulf Professional Publishing
ISBN: 9780123611604
Category : Plant diseases
Languages : en
Pages : 1084

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Book Description
It has been ten years since the publication of the third edition of this seminal text on plant virology, during which there has been an explosion of conceptual and factual advances. The fourth edition updates and revises many details of the previous editon, while retaining the important older results that constitute the field's conceptual foundation. Key features of the fourth edition include: * Thumbnail sketches of each genera and family groups * Genome maps of all genera for which they are known * Genetic engineered resistance strategies for virus disease control * Latest understanding of virus interactions with plants, including gene silencing * Interactions between viruses and insect, fungal, and nematode vectors * New plate section containing over 50 full-color illustrations.