Archives of Biological Sciences 2012 Volume 64, Issue 3, Pages: 1001-1016
https://doi.org/10.2298/ABS1203001G
Full text ( 567 KB)
Cited by
Evaluation of reproductive success and conservation strategies for Senecio coincyi (Asteraceae), a narrow and threatened endemic plant of central western Spain
Martínez-García Felipe (Departamento de Silvopascicultura, Escuela Técnica Superior de Ingenieros de Montes, Universidad Politécnica de Madrid, Madrid, Spain)
Guerrero-García Silvia (Departamento de Silvopascicultura, Escuela Técnica Superior de Ingenieros de Montes, Universidad Politécnica de Madrid, Madrid, Spain)
Pérez-García Félix (Departamento de Biología Vegetal, Escuela Universitaria de Ingeniería Técnica Agrícola, Universidad Politécnica de Madrid, Madrid, Spain)
Senecio coincyi (Asteraceae) is a threatened endemic plant of central western
Spain. The reproductive biology of this species in relation to the
characteristics of its habitats and the possible strategies for its
conservation, were studied. The area of occupancy, habitat types and size of
13 known subpopulations of S. coincyi was evaluated. Germination tests were
carried out to assess the effect of temperature and light regimes, and the
possible intraspecific variation on the cypsela germination. Cypselas reached
very high germination percentages (90-100%) from 15ºC to 30ºC. However, the
germination decreased (by about 19%) at 10ºC. The light conditions assayed
did not significantly affect cypsela germination. In conclusion, S. coincyi
showed high sexual reproduction ability, and therefore its conservation
problems are not due to agents related to its reproductive biology, but to
others, such as the alteration of its habitat caused by the presence of
livestock.
Keywords: Cypsela germination, intraspecific variability, plant conservation, reproductive biology, Senecio coincyi, Spain