| Popis: |
Bibliography: leaves 135-156. This study investigated the effects of the symbiotic association of plants with vesicular-arbuscular mycorrhizal fungi on the intensity of intraspecific competition and its consequences on popular structure. Four main glasshouse experiments were performed using the non-cultivated Rhodanthe chlorocephala ssp. Rosea, and the cultivated species Trifolium subterraneum grown at different plant densities, under different levels of phosphorus and light, and in environments with homogeneous and patchy distribution of phosphorus. Results emphasise that the main effects of mycorrhizas at the individual level may not by apparent at population level because of the influence of density-dependent processes. However, infected individuals with a strong response to the symbiosis would have an advantage in situations of competition. |
