Adult plant response of near-isogenic lines and stocks of wheat carrying specific Lr genes against leaf rust
253 / 275
Authors
-
S.M.S. TOMAR1 and M.K. MENON2
1 Division of Genetics, Indian Agricultural Research Institute, New Delhi 110 012
2 Indian Agricultural Research Institute, Regional Station, Wellington, The Nilgiris 643 231
Keywords:
Near-isogenic wheat lines, Lr genes, Adult plant response, Leaf rust, Backcross improved linesAbstract
Near-isogenic lines and stocks of common wheat carrying specific Lr genes were screened for adult plant resistance against leaf rust (Puccinia recondita f. sp. triticl) pathotypes prevailing in the Nilgiris (South India) under natural and artificial epiphytotic conditions for a period of 10 years (1985-1995). AI;en genes, namely, Lr9, Lr19, Lr14, Lr25, Lr28, Lr32 and Lr37 conferred a high degree of adult plant resistance (APR), while Lr18, Lr21, Lr22a, Lr35 and Lr36 exhibited moderate resistance to leaf rust. However, wheats carrying LrUb, Lr31 + Lr27 and Lr34 conditioned moderate susceptibility. Gene Lr26 from SecaJe cereale and Agropyron elongatum-derived gene Lr29 were ineffective. Adult plant response of these stocks against stem and stripe rusts was also recorded. The backcross improved lines carrying genes Lr19 and Lr14 also showed APR to leaf rust.
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.