EXISTENCE OF TWO PATHOTYPES OF PHYSALOSPORA TUCUMANENSlS IN COASTAL ANDHRA PRADESH*
130
Authors
-
S. RAMAPANDU AND M. N. SARMA
Andhra Pradesh Agricultural University, Regional Agricultural Research Station
Anakapalle 531 DOl
Keywords:
Red rot, Sugar cane, Pathotype, Differential hosts, Physalospora tucumanensisAbstract
Seventeen isolates of the red rot fungus obtained from infected plants of cane cultivars Co 419, Co ~7, CoC 671, Co 62175, CoC 8001, C79126 and one unknown cultivar, from different parts of coastal Andhra Pradesh were inoculated on eight sugarcane cultivars, viz., Co 419, Co 997, Co 62175, Co 975, CoJ 64, Co 7717,.B.0. 91, Co 1148 and two genotypes, Baragua and Khakai to identify the pathotypes present in Andhra Pradesh. Among the 17 isolates studied, eight isolates obtained from cultivars Co 419, Co 62175 and CoC BOO1gave a similar patiern of reaction on the cultivars inoculated, while the other nine isolates from Co ~7, COC 671, C. 79126 and the unknown cultivar gave another pattern of reaction. Within the two major pathotypes, three bioiypes in each pathotype were identified. The results clearly indicated the existence of two pathotypes in red rot fungus in coastal Andhra region. Cultivars Co 419, Co ~7; Co 62175 and CoJ 64 gave differential reaction with the different pathotypes and appear to be useful as differential hosts.
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.