Pathogenic variability and effect of culture filtrate of Sclerotium oryzae on the inhibition of radicle and plumule in rice
231
Authors
-
Z. ALI* and R.A. SINGH
Department of Plant Pathology, College of Agriculture, G. B. Pant University of Agriculture & Technology, Pantnagar 263 145
Keywords:
Sclerotium oryzae, pathogenic variability, isolates, differentials, culture filtrate. inhibition, radicle. plumuleAbstract
Relative virulence of 15 isolates of the pathogen (S. oryzae) was tested on six differentials by inoculation under glasshouse and laboratory conditions. In the glasshouse stem wrap method (SWM) and under laboratory conditions. the cut stem wound (CSW) inoculation method were followed. On the basis of disease reaction on the differntials, the isolates have been divided into six categories. Rice cv. Pant Dhan 4 was selected to study the effect of culture filtrate on radicle and plumule length with a view to find differences in the toxin production among the isolates, if any. Culture filtrate of all the isolates inhibited the radicle and plumule elongation which was directly correlated with the concentration of the culture filtrate in comparison to check. The maximum inhibition of radicle and plumule occurred in undiluted culture filtrate followed by 50 and 25 per cent filtrate.
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.