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http://hdl.handle.net/11154/1541
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Title: | seedling growth of two pioneer tropical tree species in competition: the role of arbuscular mycorrhizae |
Authors: | Guadarrama, P Briones, O Alvarez, F |
Issue Date: | 2004 |
Abstract: | The effects of arbuscular mycorrhizae (AM) fungi on growth and survival of two pioneer tropical plant species were studied in a greenhouse experiment for 6 months. One, an early pioneer species (Heliocarpus appendiculatus Turcz., Tiliaceae) and the second, a late pioneer species (Stemmadenia donnell-smithii (Rose) Woodson, Apocynaceae). Three growing conditions were used as competition factors-no competition, with intraspecific and interspecific competitions-along with two different conditions of AM-with and without mycorrhizal inoculum. Mycorrhizal colonization of H. appendiculatus roots was seven-fold more than in S. donnell-smithii. With AM infection, H. appendiculatus did not increase in growth, but showed greater survival in the absence of competition. S. donnell-smithii grew better in the presence of AM fungi and the effect of competition was diminished. S. donnell-smithii with AM fungi infection showed better survival and increase in biomass, making it a better competitor than H. appendiculatus. |
URI: | http://hdl.handle.net/11154/1541 |
ISSN: | 0014-2336 |
Appears in Collections: | Departamento de Ecología y Recursos Naturales
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