Possible involvement of anthocyanin compounds in resistance of sugarcane against red rot
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Authors
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R. VISWANATHAN, D. MOHANRAJ and P. PADMANABAN
Plant Pathology section, Sugarcane Breeding Institute, Coimbatore 64 I 007
Keywords:
Sugarcane. red rot resistance, anthocyaninAbstract
The biochemical resistance of sugarcane to red rot caused by Glomerella tucumanensis was studied by inoculating 8-month-old canes of resistant and susceptible cultivars with a conidial suspension of pathotype Cf671. The accumulation of anthocynaninswas significantly higher in resistant cultivars than in susceptible cultivars. Anthocyanin extracts from sugarcane cultivars had an inhibitory effect on conidial germination. Purified pathogen toxin triggered a higher level of anthocyanin accumulation than pathogen inoculation in the tested cultivars (BO 91 and CoC 671).
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