Table 2.

Distribution of siderophore-producing bacterial isolates of tobacco rhizosphere according to ARDRA groups and restriction patterns.

Group No.	ARDRA banding pattern according to restriction enzyme used				Numbers of isolates			Group total frequency (%)
	Alu I	Hae III	Hinf I	Msp I	L1	L2	L1/2	L1	L2	L1/2
1	A	A	A	A	11	12	23	3.7	3.9	7.6
2	B	B	B	B	7	9	16	2.3	3.1	5.4
3	C	C	B	B	4	4	8	1.3	1.4	2.7
4	D	C	B	B	7	9	16	2.2	3.2	5.4
5	C	C	C	B	5	3	8	1.6	1.1	2.7
6	C	C	C	C	3	2	5	1.0	0.7	1.7
7	C	D	C	D	10	11	21	3.3	3.7	7.0
8	C	E	B	E	2	3	5	0.7	1.0	1.7
9	C	F	B	F	6	7	13	2.0	2.3	4.3
10	C	F	B	E	8	10	18	2.7	3.3	6.0
11	E	G	D	G	7	6	13	2.3	2.0	4.3
12	F	H	E	H	19	21	40	6.2	7.1	13.3
13	F	H	F	H	7	9	16	2.3	3.1	5.4
14	G	H	E	H	3	2	5	1.0	0.7	1.7
15	H	H	F	H	4	6	10	1.3	2.0	3.3
16	G	I	G	H	2	1	3	0.7	0.3	1.0
17	I	H	H	I	1	2	3	0.3	0.7	1.0
18	J	I	I	J	5	3	8	1.7	1.0	2.7
19	K	I	I	K	5	5	10	1.6	1.7	3.3
20	L	J	J	L	2	1	3	0.7	0.3	1.0
21	M	J	J	L	4	4	8	1.3	1.4	2.7
22	N	K	K	M	1	2	3	0.3	0.7	1.0
23	O	L	J	N	4	6	10	1.3	2.0	3.3
24	O	L	J	O	4	4	8	1.3	1.4	2.7
25	P	M	L	P	2	3	5	0.7	1.0	1.7
26	Q	N	M	R	3	5	8	1.0	1.7	2.7
27	R	O	N	S	4	4	8	1.3	1.4	2.7
28	S	P	O	T	3	2	5	1.7	1.0	1.7
Total	19	16	15	20	143	156	299	47.8	52.2	100.0

L1: isolates of location 1; L2: isolates of location 2; L1/2: the total isolates of location 1 and 2.