Figure 2. Mycorrhizal infection of berseem clover roots as affected by water availability and mycorrhization treatment.
Data are means (n = 4) ± S.E. measured at R14 (14 days after C2) and R28 (28 days after C2). WW, well-watered; WS, water-stressed; +AM, inoculation with arbuscular mycorrhizal spores; –AM, suppression of arbuscular mycorrhizal symbiosis.