Table 1.

Distribution of the AVR-Pi9 genes and the avirulence isolates of the M. oryzae collected from Yunnan, China.

Host	Locations/Years	No. of Isolates	PCR Detection		Pathogenicity Assay a
			No. of Isolates with AVR-Pi9	Frequency (%)	No. of Avirulence Isolates	Frequency (%)
Rice	Northeastern/2012	44	44	100.0	44	100.0
	Central/2013	88	88	100.0	88	100.0
	Southeastern/2013	21	21	100.0	21	100.0
	Western/2013	127	127	100.0	122	96.1
	Northwestern/2014	21	21	100.0	21	100.0
	Southwestern/2014	25	25	100.0	25	100.0
	Total	326	326	100.0	321	98.5
Non-rice	Western/2014	1	1	100.0	1	100.0
	Central/2014	1	1	100.0	1	100.0
	Total	2	2	100.0	2	100.0

^a Pathogenicity test was performed on the resistant genotype (IRBL9-W) as described previously (35–38).