Effects of burial depth on seed germination and seedling emergence of Mexican oaks: A glasshouse experiment
2012
Flores-Cano, J., Universidad Autónoma de San Luis Potosí, San Luis Potosí (México). Facultad de Agronomía | Badano, E.I., División de Ciencias Ambientales, San Luis Potosí (México). A.C. (IPICYT), Instituto Potosino de Investigación Científica y Tecnológica | Flores, J., División de Ciencias Ambientales, San Luis Potosí (México). A.C. (IPICYT), Instituto Potosino de Investigación Científica y Tecnológica
Despite the interest in restoring oak forests in Mexico, very little is known about their regeneration ecology. We assessed the influence of acorn burial depth on seed germination and seedling emergence for eight Mexican oak species (Q. affinis, Q. castanea, Q. coccolobifolia, Q. laeta, Q. mexicana, Q. polymorpha, Q. tinkhamii and Q. viminea). We performed a glasshouse experiment in which acorns were buried at five soil depths (0, 2, 4, 6 and 8 cm). After four months, acorn germination and seedling emergence were recorded. Buried acorns showed higher germination and seedling emergence than unburied ones, but burial depth also influenced these responses. The optimum burial depth for seedling emergence of each species was 2, 4, 6 and 8 cm depth for four species (Q. castanea, Q. mexicana, Q. tinkhamii, and Q. viminea); 2 and 4 cm for Q. laeta; as well as 2, 4 and 8 cm for Q. coccolobifolia.
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