Background and aims Insect frass, a by-product of insect farming, consists of larval faeces, insect remains, and residual feed. It contains agronomically important nutrients and diverse microbiota, making it a promising organic fertiliser. However, its utilisation as fertiliser has only been tested for few frass types from different feed materials, with little attention to their influence on soil microbiota or application mode...

Invasive species frequently differentiate phenotypically in novel environments within a few generations, often even with limited genetic variation. For the invasive plants Solidago canadensis and S. gigantea , we tested whether such differentiation might have occurred through heritable epigenetic changes in cytosine methylation. In a 2‐year common‐garden experiment, we grew plants from seeds collected along a latitudinal gradi...

Despite the importance of polyploidy and the increasing availability of new genomic data, there remain important gaps in our knowledge of polyploid population genetics. These gaps arise from the complex nature of polyploid data (e.g. multiple alleles and loci, mixed inheritance patterns, association between ploidy and mating system variation). Furthermore, many of the standard tools for population genetics that have been devel...

A breakdown of self‐incompatibility (SI) followed by a shift to selfing is commonly observed in the evolution of flowering plants. Both are expected to reduce the levels of heterozygosity and genetic diversity. However, breakdown of SI should most strongly affect the region of the SI locus ( S ‐locus) because of the relaxation of balancing selection that operates on a functional S ‐locus, and a potential selective sweep. In co...

The frequency of polyploidy increases with latitude in the Northern Hemisphere, especially in deglaciated, recently colonized areas. The cause or causes of this pattern are largely unknown, but a greater genetic diversity of individual polyploid plants due to a doubled genome and/or a hybrid origin is seen as a likely factor underlying selective advantages related to life in extreme climates and/or colonization ability. A hist...