Intrinsic postzygotic isolation typically appears as reduced viability or fertility of interspecific
hybrids caused by genetic incompatibilities between diverged parental genomes …

Although intrinsic postzygotic reproductive barriers can play a fundamental role in
speciation, their underlying evolutionary causes are widely debated. One hypothesis is that …

Hybrid seed failure arising from wide crosses between plant species is a recurring obstacle
in plant breeding, impeding the transfer of desirable traits. This postzygotic reproductive …

The endosperm, a transient seed tissue, plays a pivotal role in supporting embryo growth
and germination. This unique feature sets flowering plants apart from gymnosperms …

Endosperm is a major evolutionary innovation of flowering plants, and its proper
development critically impacts seed growth and viability. Epigenetic regulators have a key …

Premise Many tropical plants are bat‐pollinated, but these mammals often carry copious,
multispecific pollen loads making bat‐pollinated plants susceptible to heterospecific pollen …

Reproductive isolation between selfing and outcrossing species can arise through diverse
mechanisms, some of which are directly associated with differences in mating system. We …

Endosperm in angiosperms and placenta in eutherians are convergent innovations for
efficient embryonic nutrient transfer. Despite advantages, this reproductive strategy incurs …

Climate change is altering species ranges and reproductive interactions in existing ranges,
offering species new scope to mate and hybridize. The outcomes will depend on how …

Angiosperm sexual systems are among the most diverse of any organism (Barrett, 2010).
While the function of sexual systems is relatively simple—to promote mating—the …