Studies on different acid lime cultivars reaction to isolates of Xanthomonas axonopodis PV. Citri

Abstract

In present research work Sixteen different isolates of Xanthomonas axonopodis pv. citri were tested on different acid lime cultivars. The pathogenicity was confirmed by reaction of these isolates on different citrus cultivars by inoculation. It was found that variety Chankradhar was most susceptible to all the isolates of Xanthomonas axonopodis pv. citri and expressed symptoms in 3 -10 days after inoculation. Xac1 and Xac12 produced symptoms on cultivar Chankradhar 3 days after inoculation followed by Xac 2, Xac11 and Xac16. However, only two Xac isolates viz. Xac12 and Xac 13 were produced symptoms on cultivar Bagalipattu and expressed symptoms within 4 day of inoculation. The isolate Xac12 and Xac14 represented distinct nature of virulence as it initiated water soaked lesion within three to six days. Tahiti was found resistant against all isolates as none of the isolate was able to cause the disease.