http://oar.icrisat.org/id/eprint/4936 2011-12-13T11:35:34Z info:eu-repo/semantics/descriptiveMetadata http://oar.icrisat.org/4936/ Morphological, pathogenic and genetic variability amongst sorghum isolates of Colletotrichum graminicola from India Latha, J Mathur, K Mukherjee, P K Chakrabarti, A Rao, V P Thakur, R P Sorghum 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. Indian Phytopathological Society 2002 Article PeerReviewed application/pdf en 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 info:eu-repo/semantics/objectFile info:eu-repo/semantics/humanStartPage