Table 1.

Intensity of root colonization by AMF by week, AMF species, and IP

Week of harvest	AMF inoculated	No. of IP	Mean (SE) intensity of root colonizationa
			Control background	AMF background
6	None		0	62.0 (9.12) abc
6	G. mosseae	150	28.5 (13.8) ad, C	60.0 (16.0) abc
6	G. mosseae	20	7.30 (7.03) ad, B	67.5 (15.4) abc
6	G. intraradices	150	48.0 (26.4) e, A	52.3 (15.4) ab
6	G. intraradices	400	50.5 (12.9) e, A	55.7 (8.33) ab
6	G. claroideum	150	37.5 (10.5) bce, BC	56.2 (12.0) ab
6	G. claroideum	400	34.0 (4.60) bce, C	52.3 (11.5) ab
12	None		0	62.2 (12.4) abc
12	G. mosseae	150	34.5 (8.41) abd	59.5 (9.48) a
12	G. mosseae	20	13.0 (9.12) abd	40.7 (7.00) a
12	G. intraradices	150	89.3 (3.88) f	68.3 (4.84) abc
12	G. intraradices	400	88.2 (3.19) f	58.8 (9.52) abc
12	G. claroideum	150	33.7 (13.7) abc	59.7 (13.8) ab
12	G. claroideum	400	24.8 (4.17) abc	54.8 (7.41) ab
24	None		0	68.5 (21.1) abc
24	G. mosseae	150	44.0 (11.2) ce	71.8 (9.43) bc
24	G. mosseae	20	42.0 (17.3) ce	68.0 (8.22) bc
24	G. intraradices	150	85.3 (10.8) f	80.2 (3.77) c
24	G. intraradices	400	87.3 (8.48) f	72.0 (14.1) c
24	G. claroideum	150	12.8 (7.44) d	67.3 (10.6) bc
24	G. claroideum	400	14.5 (11.8) d	69.2 (18.6) bc

^aCalculated according to the methods described by Trouvelot et al. (32). Means of the same background community not sharing a common letter differed significantly (based on Tukey's honestly significant difference comparisons, P < 0.05). Lowercase letters (a to f) indicate differences among a harvest by interaction with the AMF species inoculated. Capital letters (A to C) indicate differences among an IP level by interaction with the AMF species inoculated (only indicated at harvest 1).