Pathogenic and genetic characterization of six Indian populations of Colletotrichum sublineolum, the causal agent of sorghum anthracnose


213 / 91

Authors

  • R.P. THAKUR*, K. MATHUR, V.P RAO, S. CHANDRA, S. SHIVRAMKRISHNAN, S.KANNAN R.V. HIREMATH, H.C. TAILOR, U.S. KUSHWAHA
  • R.R. DWIVEDI and S. INDIRA

Keywords:

Sorghum, anthracnose, virulence, aggressiveness, Colletotrichum sublineolum During the last two and half decades, systematic efforts have been made for developing high yielding sorghum (Sorghum bicolor (L.) Moench) cultivars for increased grain production

Abstract

The pathogenic and genetic characterization of populations of C. sublineolum, the causal agent of anthracnose of sorghum, was investigated in isolates from 6 locations in India. Multi-location field evaluation and greenhouse tests were done on 16 sorghum lines that comprised the International Sorghum Anthracnose Virulence Nursery (ISAVN). The lines were tested in a field trial for 4-5 years (1992-96) at 6 locations: Indore, Surat, Patancheru, Dharwad, Udaipur and Pantnagar. Plants were scored for disease reaction (R/MR/S) and for disease severity (on a 1-9 scale where 1 is no lesions and 9 is >75% leaf area covered with lesions) at the soft-dough stage in the field and at the seedling stage in the greenhouse. Significant (P<0.001) differences wereobserved for virulence (disease reaction) and aggressiveness (disease severity) across locations (isolates) and sorghum lines both in field and greenhouse tests. In both tests, isolateXsorghum line interactions were highly significant (P<0.001) suggesting that populations of C. sublineolum at these 6 locations were different. A random amplified polymorphic DNA (RAPD) analysis exhibited genetic dissimilarities among the isolates and these were classified into 6 groups.

Downloads

Issue

Vol. 51 No. 4 (1998): 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

R.V. HIREMATH, H.C. TAILOR, U.S. KUSHWAHA, R. T. K. M. V. R. S. C. S. S. S., & and S. INDIRA, R. D. (2002). Pathogenic and genetic characterization of six Indian populations of Colletotrichum sublineolum, the causal agent of sorghum anthracnose. Indian Phytopathology, 51(4), 338-348. https://epubs.icar.org.in/index.php/IPPJ/article/view/19703