TABLE 2.

Number of isolates, identification by species, and recovery on each of two selective media of B. cepacia complex isolates from soil and the rhizosphere of onion from six populations in Michigan

Species	Population	No. of isolatesa from:		No. of isolates on:
		Soil	Rhizosphere	PCAT	TB-T
B. cepacia
	1	1	16	2	15
	2	4	0	1	3
	3	2	0	0	2
	4	26	13	4	35
	5	13	36	15	34
	6	6	43	11	38
Total		52	108	33	127
B. cenocepacia
	1	24	95	70	49
	2	0	77	52	25
	3	25	128	74	79
	4	0	0	0	0
	5	8	8	10	6
	6	2	113	90	25
Total		59	421	296	184
B. ambifaria
	1	4	39	7	36
	2	28	143	44	127
	3	35	73	18	90
	4	1	1	0	2
	5	72	106	32	146
	6	48	73	24	97
Total		188	435	125	498
B. pyrrocinia
	1	0	0	0	0
	2	0	0	0	0
	3	0	0	0	0
	4	0	0	0	0
	5	0	0	0	0
	6	11	16	9	18
Total		11	16	9	18

^aIdentification of isolates to the putative B. cepacia complex species level was done using a restriction fragment length polymorphism analysis of PCR-amplified recA as described previously (31, 37).