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Morphological, pathogenic and genetic variability amongst sorghum isolates of Colletotrichum graminicola from India

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Relation http://oar.icrisat.org/4936/
 
Title Morphological, pathogenic and genetic variability amongst sorghum isolates of Colletotrichum graminicola from India
 
Creator Latha, J
Mathur, K
Mukherjee, P K
Chakrabarti, A
Rao, V P
Thakur, R P
 
Subject Sorghum
 
Description A total of 18 isolates of Collectotrichum graminicola infecting sorghum in Andhra Pradesh and Maharashtra, India, were characterised and compared for morphological, pathogenic and genetic diversity. The representative single-lesion isolates and their derivatives varied significantly for morphological traits -colony colour, growth pattern and sporulation on oat meal agar medium. These isolates also exhibited significant variation for disease reaction on a set of sorghum differential lines in greenhouse tests. The isolates from the local sorghum cultivars were although different from those of CSH 9, they did infect CSH 9 indicating a virulence shift in the C. graminicola population from the local sorghum to hybrid CSH 9. Genotypic variation was studied using the random amplified polymorphic DNA (RAPD) technique. A set of six random primers could differentiate the isolates. The cluster analysis indicated a very high genetic variability among isolates of C. graminicola and amogg variants from a single lesion isolates in RAPD profile.
 
Publisher Indian Phytopathological Society
 
Date 2002
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/4936/1/Sg.Morphological%20pathogenic.2002.JL%2CKM%2CPKM%2CAC%2CVPR%2CRPT.Ind%20Phytopath%2019-25.pdf
Latha, J and Mathur, K and Mukherjee, P K and Chakrabarti, A and Rao, V P and Thakur, R P (2002) Morphological, pathogenic and genetic variability amongst sorghum isolates of Colletotrichum graminicola from India. Indian Phytopathology, 55 (1). pp. 19-25. ISSN 0367-973X