Page 47 - LAS CIENCIAS AMBIENTALES EN EL ANTROPOCENO - DIGITAL(1)

SUMMARY REFERENCIAS

eiselia mexicana (Forman et al. was found, 86% in late collection and Forman, L.L.; Brandham, P.E.; Harley,
1989) is an endemic species of the 83% in early collection, aerial seed M.M.; Lawrence, T.J. (1989).
Btropical deciduous forest of the banks showed higher viability. High Beiselia mexicana (Burseraceae)
Municipality of Aquila, Michoacán, it is seed viability was found, 86% in late and its affinities. Kew bulletin,
important for its rare beauty, its antiquity collection and 83% in early collection, 1-31.
and religious use and in traditional aerial seed banks showed higher
medicine. The lack of knowledge and viability. Germination occurred between
the low recruitment of new individuals seven and eight days after sowing. The
are taking this species to the brink of germination percentage was higher for
extinction. The main objective of this early collection (18.9 to 37.7%) than
work was to determine the germination for late collection (14% to 24%). In
percentages of Beiselia mexicana in situ, general, the aerial seed banks showed
considering two collection times (late higher germination than the soil ones.
and early) and two seed banks (aerial During the early collection, differences
and soil). Pyrenes were collected in the were only found in the germination of
localities of La Virgen, El Cenizo, Ojo La Virgen (26.6 to 39.1%) and El Cenizo
de Agua, Mancira and El Colorado. The and Mancira presented the highest
percentage of viability was obtained percentages, while in the late collection
by the flotation method and later were there were no differences between
placed in imbibition. Subsequently, localities. Seedling survival percentage
30 pyrenes were sown with three was 66.6% in 18 weeks of observation.
repetitions for each collection time, In conclusion, in situ germination of
each seed bank, and each locality. Beiselia mexicana should be carried
The differences in the germination out with pyrenes collected early and
percentages between the variables were particularly, from the aerial seed bank,
analyzed. The resulting seedlings were as well, it is advisable to carry out the
kept in a nursery and the percentage of collections in El Cenizo or in Mancira.
survival was analyzed. High seed viability

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