Cost of inbreeding in resistance to herbivores in Datura stramonium
Por:
Bello-Bedoy, R, Nunez-Farfan, J
Publicada:
1 may 2010
Categoría:
Plant Science
Resumen:
Background and Aims Experiments show that inbred progenies are frequently more damaged by herbivores than outcrossed progenies, suggesting that selfing is costly when herbivores are present and can increase the magnitude of inbreeding depression in survival and reproductive components of fitness. The present study assesses whether inbreeding increases herbivory and estimates the magnitude of inbreeding depression on reproductive components of fitness in the annual plant Datura stramonium. Methods Two experiments were performed under natural conditions of herbivory to assess the effect of inbreeding on plant damage in D. stramonium. In the first experiment, outcrossed progeny was generated using foreign pollen donors, whereas inbred progeny was produced by self-pollination. In both groups, survival, herbivore damage and reproductive components of fitness were measured. In the second experiment, inbred and outcrossed progenies were produced using only local pollen donors, and only damage
Filiaciones:
Bello-Bedoy, R:
Univ Nacl Autonoma Mexico, Inst Ecol, Dept Ecol Evolut, Lab Genet Ecol & Evoluc, Mexico City 04510, DF, Mexico
Nunez-Farfan, J:
Univ Nacl Autonoma Mexico, Inst Ecol, Dept Ecol Evolut, Lab Genet Ecol & Evoluc, Mexico City 04510, DF, Mexico
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