The pathotype distribution of Puccinia recondita f. sp. tritici in India during 1987-89
147
Authors
-
S.K. NAYAR, M. PRASHAR, J. KUMAR, S. C. BHARDWAJ and L. R. VERMA
Keywords:
Virulence survey, leaf rust, wheat, Lr gene, resistanceAbstract
Pathotype 1048 (29R23) of Puccinia recondita f. sp. tritici, possessing virulence against Lr 23 was predominant followed by 77 (45R31) and 77-A (109R31) which match LrI3, LrI5 and LrI3, LrIO, Lrl5, respectively during 1987 and 1988 crop seasons. Pathotype 77 (45R31) predominated during 1988-89 followed by 77-A-I (109R23) virulent on LrIO, LrI3, LrI5 and 1048(29R23). Four new pathotypes, namely 12-3(49R37), 77-3(125R55) and 107-1(45R35) matching Lr26 and 108-1 (57R27) virulent on Lrl5 were identified during this period. Genes Lr9, LrI9, Lr24, Lr25, Lr28 & L;'29 continued to show resistance to leaf rust. Compared to 1983-86, effectiveness of Lr23 and Lr26 has reduced considerably during 1987-89.
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.