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Virus and Viruslike Diseases
Virus and Viruslike Diseases
Comprised of research and information found on virus diseases that affect apple, pear, and quince fruits.
Item No. SP0003
34.20

Virus and Viruslike Diseases of Pome Fruits and Stimulating Noninfectious Disorders is comprised of research and information found on virus diseases that affect apple, pear, and quince fruits. It includes descriptions and characteristics of diseases, viruslike diseases, and noninfectious problems (air pollution injury, genetic disorders, herbicide damage, and nutritional disorders). Virus diseases of apple and pear are organized and illustrated according to leaf symptoms, and stem and bark symptoms. Other sections discuss diseases of quince, methods for detecting infection, development of virus-free pome fruits, and control methods.

Virus and Viruslike Diseases of Pome Fruits and Simulating Noninfectious Disorders


Acknowledgements
Preface

Introduction

Losses Caused by Virus and Viruslike Diseases


Virus Diseases of Apple

Leaf Symptoms

Apple chlorotic leafspot
Apple leaf pucker and some lesser known bark, blossom, and fruit disorders
Apple mosiac virus
Tulare apple mosaic virus

Fruit Symptoms

Apple chat fruit
Dapple apple
Green crinkle
Apple rough skin
Apple scar skin
Apple star crack

Stem and Bark Symptoms

Blister bark (1, 2 and 3)
Dead spur of apple
Apple flat limb
Freckle scurf
Platycarpa scaly bark
Apple proliferation
Pustule canker
Apple rubbery wood
Apple stem grooving
Apple stem pitting
Transmissible internal bark necrosis
Apple union necrosis

Other Infectious Diseases of Apple

Virus Diseases of Pear

Leaf Symptoms

Pear necrotic spot
Pear ring pattern mosiac
Pear vein yellows

Fruit Symptoms

Pear stony pit

Stem and Bark Symptoms

Pear decline
Pear rough bark and blister canker

Other Minor Infectious Diseases of Pear

Viruslike Diseases of Quince

Noninfectious Problems

Air Pollution Injuries to Pome Fruits
Genetic Disorders of Apples and Pears
Herbicide Injuries that Resemble Virus Diseases
Nutritional Disorders of Apples and Pears

Detection of Infection

Indexing Using Woody Indicators
Immunosorbent Assays for Detection of Viruses

Infecting Pome Fruits

Development of Virus Free Pome Fruits

Elimination of Pome Fruit Diseases by Chemotherapy
Meristem Tip Culture of Pome Fruits
Thermotherapy

Control

Quarantine
Virus Free Certification Programs in the United States and Canada
IR-2, a Virus Free, Interregional, Deciduous Fruit Tree Repository
Administrative Control of Pome Fruit Planting Material in Countries other than
     Canada and the United States


Appendix
Authors
Scientific and Common Names of Plants Mentioned in the Texts
Publish Date: 1989
Format: 6" x 9" spiral bound
Pages: 336
Images: 121 color images; 51 black and white images
Publication Weight: 2 lbs

Edited by Paul R. Fridlund

List Price:38.00
Virus and Viruslike Diseases of Pome Fruits and Simulating Noninfectious Disorders

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