• Publications
  • Influence
Ecological and evolutionary opportunities of apomixis: insights from Taraxacum and Chondrilla
The ecological and evolutionary opportunities of apomixis in the short and the long term are considered, based on two closely related apomictic genera: Taraxacum (dandelion) and Chondrilla (skeletonExpand
Lost sex : the evolutionary biology of parthenogenesis
Asex and Evolution: A Very Large-Scale Overview.- The Evolution of the Problem of Sex.- Apomixis: Basics for Non-botanists.- Cytology of Asexual Animals.- A Graphical Approach to Lineage SelectionExpand
Single cytotype areas in autopolyploid Plantago media L.
The European distribution of diploid and tetraploid cytotypes of Plantago media has been studied on three different scales: Europe as a whole, the Pyrenees and the upper Rio Gallego valley (CentralExpand
Crosses between sexual and apomictic dandelions (Taraxacum). II. The breakdown of apomixis
Some dandelions are diplosporous gametophytic apomicts. In order to study the inheritance and breakdown of apomixis, crosses were made between diploid sexuals and triploid apomicts. To investigateExpand
The significance of apomixis in the evolution of the angiosperms: a reappraisal
Apomixis, the ability to produce asexual seeds, constitutes, along with outcrossing and selfing, one of the three major breeding systems in the angiosperms. However, apomixis is by far the leastExpand
Distribution, phenology and demography of sympatric sexual and asexual dandelions (Taraxacum officinale s.l.): geographic parthenogenesis on a small scale
In many plant and animal species, sexual and asexual forms have different geographical distributions ('geographic parthenogenesis'). The common dandelion Taraxacum officinale s.l. provides aExpand
The occurrence of phenotypically complementary apomixis-recombinants in crosses between sexual and apomictic dandelions (Taraxacum officinale)
Apomictic seed development in dandelion (Taraxacum officinale) involves (1) restitutional meiosis (diplospory), (2) egg cell parthenogenesis, and (3) autonomous endosperm development. The question isExpand
Simulations of flowering time displacement between two cytotypes that form inviable hybrids
The evolution of reproductive isolation by flowering time displacement between two cytotypes that produce inviable hybrids was studied by computer simulations in an isolation-by-distance model.Expand
Available exsitu germplasm of the potential rubber crop Taraxacum koksaghyz belongs to a poor rubber producer, T. brevicorniculatum (Compositae–Crepidinae)
Cultivation of the Russian dandelion (Taraxacum koksaghyz) as a rubber producing crop was abandoned more than 50 years ago. Recently the interest in the Russian dandelion has renewed, due to theExpand
Comparative cyto-embryological investigations of sexual and apomictic dandelions (Taraxacum) and their apomictic hybrids
In the autonomous apomictic Taraxacum officinale (common dandelion), parthenogenetic egg cells develop into embryos and central cells into endosperm without prior fertilisation. Unreduced (2n)Expand