▪ Abstract Quantifying the extent to which seed production is limited by the availability of
pollen has been an area of intensive empirical study over the past few decades. Whereas …

Dioecy, characterized by the presence of distinct male and female plants, is widespread in
angiosperms, being known in 37 out of Engler & Prantl's 51 orders (132). Yet botanists have …

The question of why organisms reproduce sexually is still a matter of controversy. In this
account, Professor Maynard Smith considers the selective forces responsible for the origin …

Across diverse taxa, selfing species have evolved independently from outcrossing species
thousands of times. The transition from outcrossing to selfing decreases the effective …

With the advent of the Anthropocene, biological invasions have reached an unprecedented
level, and the number of species introductions is still increasing in an ever‐changing world …

Apomixis, the asexual reproduction via seed, has many potential applications for plant
breeding by maintaining desirable genotypes over generations. Since most major crops do …

Mutualisms (cooperative interactions between species) have had a central role in the
generation and maintenance of life on earth. Insects and plants are involved in diverse forms …

Are new species formed in rare catastrophes, distinct from the normal processes of phyletic
evolution? Or does reproductive isolation evolve gradually, as a by-product of the …

The duplication of an entire genome is no small affair. Whole genome duplication (WGD) is
a dramatic mutation with long-lasting effects, yet it occurs repeatedly in all eukaryotic …

We review and analyze the available literature on the frequency and distribution of self-
incompatibility (SI) among angiosperms and find that SI is reported in more than 100 families …