A Textbook of Plant Virus Diseases - download pdf or read online

By Kenneth M. Smith

ISBN-10: 0126513503

ISBN-13: 9780126513509

Show description

Read or Download A Textbook of Plant Virus Diseases PDF

Similar botany books

Joseph Seckbach's Symbiosis: Mechanisms and Model Systems PDF

Symbiosis is the fourth quantity within the sequence mobile foundation and lifestyles in severe Habitats (COLE). Fifty specialists, from over a dozen international locations, evaluate their present experiences on varied techniques to those phenomena. The chapters current numerous points of symbiosis from gene move, morphological good points, and biodiversity to person organisms sharing mutual mobile habitats.

American Herbal Products Association botanical safety - download pdf or read online

Entry to exact, evidence-based, and clinically proper details is vital to somebody who makes use of or recommends natural items. With enter from probably the most revered specialists in natural and integrative drugs, this thoroughly revised variation of the yankee natural items Association’s Botanical defense instruction manual stories either conventional wisdom and modern examine on herbs to supply an authoritative source on botanical protection.

Additional info for A Textbook of Plant Virus Diseases

Sample text

T h e r e appear to be no leaf symptoms, b u t rough brown patches, stripes and, in some cases, rings, develop on the skin of the fruits. Sometimes quite large areas of the skin are roughened a n d browned (Fig. 7B). T h e patches are rarely cracked ; the fruits remain small a n d fall into the lowest commercial grades. Several severely affected trees have shown sparse foliage, but die-back and delayed foliation, characteristic of star crack disease, have not been observed (van Katwijk and Meijneke, 1963a).

Differential h o s t s . Necrotic local lesions with a halo develop on the inoculated leaves of Gomphrena globosa, a n d dark lesions with a light centre on Ocymum basilicum. Diseases caused and host range Cynarus scolymus L. Globe artichoke. Symptoms consist of a severe crinkle mosaic with malformation a n d puckering of the leaf blade. T h e r e is a severe reduction in the interveinal parenchymatous tissues (Figs. 9A—D). Other hosts include Mcotiana clevelandii a n d N. glutinosa, if infected from t h e former species (Martelli, 1965).

Cardunculus) by mechanical juice inoculations. Thus far only artichoke, cardoon, zinnia, a n d milk thistle (Silybum marianum) have been found to be hosts. Replacement of infected artichokes with disease-free plants is the first step in its control. ARTICHOKE (CALIFORNIA) LATENT VIRUS The Virus TRANSMISSION. T h e virus is mechanically transmissible, particularly with the addition of a n abrasive. T h e virus is readily inactivated when transmitted from artichoke leaves so that the addition of a reducing agent such as sodium sulphite is advisable.

Download PDF sample

A Textbook of Plant Virus Diseases by Kenneth M. Smith

by William

Rated 4.46 of 5 – based on 35 votes