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Blight symptoms on pigeonpea were observed in alarmingproportion since 2009 onwards in Andhra Pradesh state of India. Alternariablight infected pigeonpea plants were collected from Andhra Pradesh state ofIndia to isolate and characterize the pathogen. The isolate proved pathogenicon pigeonpea cultivar ICPL 87119. Genetic characteristics were analyzed basedon the sequence of the rDNA-internal transcribed spacer ITS region. The phylogenetictree based on rDNA-ITS analysis showed that the Alternaria alternata causing Alternaria blight in pigeonpea isvery distinct from the other Alternaria isolate reported from different host.This is the first report of molecular identification of Alternaria alternata causing Alternaria blight in pigeonpea.

KEYWORDS

Climate Change; Internal Transcribed Spacer ITS; PCR; Pigeonpea; Phylogenetic Tree

Cite this paper

Sharma, M. , Ghosh, R. and Pande, S. 2013 Occurrence of Alternaria alternata causing Alternaria blight in pigeonpea in India. Advances in Bioscience and Biotechnology, 4, 702-705. doi: 10.4236-abb.2013.46092.





Autor: Mamta Sharma, Raju Ghosh, Suresh Pande

Fuente: http://www.scirp.org/



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