Romana Urfusová
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View article: A pentaploid endosperm and a Penaea-type embryo sac are likely synapomorphies of Azorella (Apiaceae, Azorelloideae)
A pentaploid endosperm and a Penaea-type embryo sac are likely synapomorphies of Azorella (Apiaceae, Azorelloideae) Open
About 80% of angiosperms form a monosporic Polygonum -type embryo sac whereas in the remaining species eleven other types of embryo sac are found. Evidence as to the type of embryo sac is lacking for many plant species, and the role of hig…
View article: Whole genome duplication increases ecological niche breadth of the perennial herb Urtica dioica
Whole genome duplication increases ecological niche breadth of the perennial herb Urtica dioica Open
Environmental niche modelling and associated species distribution models often ignore intraspecific ecological differentiation linked with ploidal differentiation, i.e. the occurrence of several cytotypes of the same species. Here we teste…
View article: The mentor effect increases the rate of selfing in couch grasses
The mentor effect increases the rate of selfing in couch grasses Open
Some self-incompatible species are thought to be capable of selfing via facilitation by foreign pollen (induced selfing or the mentor effect), which might be a phenomenon of underestimated importance. In addition, higher percentages of sel…
View article: Morphology mirrors ploidy and reproductive modes in Pilosella officinarum
Morphology mirrors ploidy and reproductive modes in Pilosella officinarum Open
Pilosella officinarum is represented predominantly by tetraploid (2n = 36), pentaploid (2n = 45) and hexaploid (2n = 54) cytotypes reproducing, to various degrees, both sexually and apomictically. Its current intraspecific taxonomical trea…