Occurrence of a mosaic virus disease on sunflower in Karnataka
172 / 431
Authors
-
NAGARAJU, V. MUNIYAPPA, S.J. SINGH1 and K. VIRUPAKSHAPPA1
Department of Plant Pathology, UAS, GKVK, Bangalore 560 065
1 Indian Institute of Horticultural Research, Hessarghatta, Bangalore 560 089
Keywords:
Sunflower, mosaic virusAbstract
In Bangalore, India, a virus disease of sunflower producing chlorotic ringspot and mosaic symptoms was found to be transmitted by mechanical sap inoculation (up to 40%) and by Aphis gossypii (20-24%), A. craccivora (14-16%) and Myzus persicae (20-25%) to the sunflower cultivars Morden and KBSH 1. The virus had a very narrow host range infecting only 1 weed host, Galinsoga parviflora, a dilution end point of 1:500-1:1000, a thermal inactivation point of 55-65deg C and longevity in vitro for 66-72h at room temperature (21-28deg C). The virus particles could not be observed under the electron microscope, both with purified preparations and ultrathin sections of infected sunflower leaf samples. The virus is being considered as sunflower mosaic virus, hitherto unreported from Karnataka.
Downloads
Issue
Section
License
For Authors
As soon as an article is accepted for publication, authors are requested to assign copyright of the article (or to grant exclusive publication and dissemination rights) to the publisher (Indian Phytopathlogical Society). This will ensure the widest possible protection and dissemination of information.
For Readers
While the advice and information in this journal is believed to be true and accurate at the date of its publication, the authors, the editors, nor the publisher can accept any legal responsibility for any errors or omissions that may have been made. The publisher makes no warranty, express or implied, with respect to the material contained herein.
All articles published in this journal are protected by copyright, which covers the exclusive rights to reproduce and distribute the article (e.g., as offprints), as well as all translation rights. No material published in this journal may be reproduced photographically or stored on microfilm, in electronic data bases, on video disks, etc., without first obtaining written permission from the publisher. The use of general descriptive names, trade names, trademarks, etc. in this publication, even if not specifically identified, implies that these names are protected by the relevant laws and regulations.