RT journal article
T1 Self‐incompatibility and floral parameters in Hypochaeris sect. Hypochaeris (Asteraceae)
A1 Ortiz, María Ángeles
A1 Talavera, Salvador
A1 Garcia Castaño, Juan Luis
A1 Tremetsberger, Karin
A1 Stuessy, T.F.
A1 Balao, Francisco
A1 Casimiro-Soriguer Camacho, Ramón
A2 Biología
AB We studied the relationships between self-incompatibility mechanisms and floral parameters in the genusHypochaerisL. sect.Hypochaeris(consisting ofH. glabra,H. radicata,H. arachnoidea, andH. salzmanniana). We assessed at intra- and interspecificlevels (1) the self-incompatibility  (SI)  mechanism and its distribution among populations, (2) the relationship between SI andfloral  parameters,  and  (3)  the  relationship  of  SI  to  reproductive  success.Hypochaeris  salzmannianais  semi-incompatible,H.glabrais  self-compatible,  andH.  arachnoideaandH.  radicataare  self-incompatible.  Floral  parameters  differed  amongpopulations ofH. salzmanniana: plants in self-compatible populations had fewer flowers per head, a smaller head diameter on theflower, and a shorter period of anthesis than self-incompatible populations. We also detected this pattern within a semi-compatiblepopulation ofH. salzmanniana, and these differences were also found between species with different breeding mechanisms. Fruitto flower ratio in natural populations was generally high (.60%) in all species, regardless of breeding system. It is hypothesizedthat self-compatibility may have arisen through loss of allelic diversity at theSlocus due to bottleneck events and genetic drift
SN 0002-9122
YR 2006
FD 2006
LK http://hdl.handle.net/10498/30324
UL http://hdl.handle.net/10498/30324
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026