Characterization and Identification of an Epidemic Strain of Ascochyta rabiei on Chickpeas in Northwest China

The chickpea (Cicer arietinum L.) is the primary cultivated rain fed crop in the Xinjiang region of Northwest China. In 2007, chickpeas suffered an epidemic disease that caused significant economic losses. To identify the causative agent, debris and seeds of infected chickpea plants were collected from cultivated fields. We isolated and purified the responsible pathogen and tested its pathogenicity both in greenhouse and in the field. Morphological analysis using tissue culture as well as molecular techniques confirmed that the pathogen was the blight fungus Ascochyta rabiei.

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