Genetics of resistance to leaf rust in wheat


226 / 92

Authors

  • P. BAHADUR, DINESH SINGH, ANUJ KUMAR and RAMCHARAN

Keywords:

Leaf rust, genetics, resistance, wheat

Abstract

Genetic analysis for leaf rust resistance in five Indian wheat cultivars of diverse origin viz., HD 2329, HD 2402, PBW 343, UP 262 and WH 542 was carried out with 3 pathotypes of leaf rust (Puccinia recondita f. sf). tritici) i.e. 77-2 (109R31-1), 104-2 (21R55) and 106 (OR9). Segregation of seedlings in F2 BC1 and BC2 for resistance to above pathotypes suggested the presence of one dominant gene for resistance in HD 2402, two dominant independent genes each in WH 542, UP 262 and PBW 343 and one dominant and one recessive gene in HD 2329. Analysis of BC 1 and BC 2 with above pathotypes confirmed the above results. Reciprocal crosses of above cultivars also supported these findings. Monogenic segregation in crosses involving HD 2402 with WH 542, UP 262 and PBW 343; WH 542 with HD 2329, UP 262 with HD 2329, and PBW 343 with HD 2329, to pathotype 77-2 (109R31-1) and absence of susceptible segregants in F2 in most intercrosses of resistant parents to pathotype106 (OR9) indicated the presence of at least one common gene in these wheats. Based on seedling resistance test (SRT) of above wheat with 14 pathotypes, Lr14a in HD 2402, Lr26 in WH 542 and PBW 343 and Lr10, Lr13 in HD 2329 were identified.

Downloads

Issue

Vol. 55 No. 4 (2002): Indian Phytopathology

Section

Research Articles

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.

How to Cite

ANUJ KUMAR and RAMCHARAN, P. B. D. S. (2002). Genetics of resistance to leaf rust in wheat. Indian Phytopathology, 55(4), 438-443. https://epubs.icar.org.in/index.php/IPPJ/article/view/18767