Pathogenic and morphological variability of Exserohilum turcicum isolates causing leaf blight in sorghum (Sorghum bicolor)

Bunker, R.N. and Mathur, Kusum (2010) Pathogenic and morphological variability of Exserohilum turcicum isolates causing leaf blight in sorghum (Sorghum bicolor). Indian Journal of Agricultural Sciences, 80 (10). pp. 888-892.

[img] PDF
Restricted to ICRISAT researchers only

Abstract

Pathogenic and morphological variability among 8 isolates of sorghum leaf blight pathogen Exserohilum turcicum (Pass.) Leonard and Suggs from Rajasthan, Gujarat, Maharashtra and Andhra Pradesh was studied during 2004–05. Pathogenic variability was studied in pot-grown plants by inoculating them of on a set of 14 differential lines comprising 12 sorghum (Sorghum bicolor L. Moench) germplasm accessions and 2 maize (Zea mays L.) cultivars. The isolates exhibited variations in cultural and morphological characteristics. The isolates also showed significant variations in symptoms in the natural conditions and in latent period and disease severity on the pot-grown plants of 14 test-lines. The differences in the latent period and mean disease score were statistically significant (P = 0.05) for the host lines, isolates and also for the host line×isolates interactions. Based on the disease severity and disease reaction the 8 isolates were distinguished into 5 pathotypes. Four isolates from Rajasthan were grouped into 3 different pathotyps and 2 from Maharashtra into 2 separate pathotypes, while the others from Gujarat, Maharashtra and Andhra Pradesh into a single pathotype. The isolate from Andhra Pradesh was the most virulent, followed by that in Rajasthan.

Item Type: Article
Author Affiliation: Maharana Pratap University of Agriculture and Technology, Udaipur, Rajasthan 313 001, India
Subjects: Plant Protection > Pesticides
Plant Protection > Pests
Divisions: Sorghum
Depositing User: Sandhya Gir
Date Deposited: 14 Dec 2010 19:40
Last Modified: 29 Dec 2010 19:46
Official URL: http://epubs.icar.org.in/ejournal/index.php/IJAgS/...
URI: http://eprints.icrisat.ac.in/id/eprint/1014

Actions (login required)

View Item View Item
EPrints Logo
eprints is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.