Apomixis, the reproduction via asexually formed seed, is taxonomically scattered in
angiosperms. Here we review the major developmental pathways to apomixis and the …

Gametophytic apomixis (asexual seed formation without syngamy of female and male
gametes) is a highly interesting mechanism for researchers in plant biotechnology, genetics …

Background Hieracium s. str. is a complex species-rich group of perennial herbs composed
of few sexual diploids and numerous apomictic polyploids. The existence of reticulation and …

Abstract Background and Aims Apomixis or asexual seed reproduction is a key evolutionary
mechanism in certain angiosperms providing them with reproductive assurance and …

Molecular evolution of ribosomal DNA can be highly dynamic. Hundreds to thousands of
copies in the genome are subject to concerted evolution, which homogenizes sequence …

Abstract The Hieracium and Pilosella (Lactuceae, Asteraceae) genera of closely related
hawkweeds contain species with two different modes of gametophytic apomixis (asexual …

We studied hybridization between the diploid Centaurea pseudophrygia and the tetraploid
C. jacea by performing crossing experiments and screening natural populations using flow …

Pilosella piloselloides var. praealta (syn. P. praealta; Hieracium praealtum) is a versatile
model used to study gametophytic apomixis. In this system apomixis is controlled by three …

Phylogeny reconstruction based on multiple unlinked markers is often hampered by
incongruent gene trees, especially in closely related species complexes with high degrees …

Background and Aims Molecular evidence for natural primary hybrids composed of three
different plant species is very rarely reported. An investigation was therefore carried out into …