TABLE 1.

Mycorrhizal frequency, mycorrhizal colonization, arbuscule abundance, and arbuscule abundance in the colonized area at the time of harvest^a

Sample source	F (%)	M (%)	A (%)	a (%)
CSN	30.7 ± 6.5	5.5 ± 2.1	4.9 ± 2.2	80.9 ± 9.2
CSS	16.7 ± 1.9	2.1 ± 0.7	1.8 ± 0.6	83.1 ± 5.5

^aF, mycorrhizal frequency (percentage of root fragments in contact with AMF); M, level of mycorrhizal colonization (percentage of root system colonized); A, arbuscule abundance (percentage of root system with arbuscules); a, arbuscule abundance in the colonized area (percentage of colonized root system with arbuscules). Values are means ± standard deviations. Differences between values for the two areas were statistically significant (P < 0.05) in all cases.