Highlights•Polyploidy or whole-genome duplication (WGD) is a ubiquitous feature of plant
genomes.•Polyploidy is most frequent in angiosperms.•A complex pattern of polyploidy is …

Polyploidy is a major force in plant evolution and speciation. In newly formed allopolyploids,
pairing between related chromosomes from different subgenomes (homoeologous …

Background Homoeologs are defined as homologous genes resulting from allopolyploidy.
Bread wheat, Triticum aestivum, is an allohexaploid species with many homoeologs …

Oilseed rape (Brassica napus L.) was formed~ 7500 years ago by hybridization between B.
rapa and B. oleracea, followed by chromosome doubling, a process known as …

Hybridization has many and varied impacts on the process of speciation. Hybridization may
slow or reverse differentiation by allowing gene flow and recombination. It may accelerate …

Plant genomes vary in size and complexity, fueled in part by processes of whole-genome
duplication (WGD; polyploidy) and subsequent genome evolution. Despite repeated …

Investigators have long searched for a polyploidy paradigm—rules or principles that might
be common following polyploidization (whole‐genome duplication, WGD). Here we attempt …

Heterosis, also known as hybrid vigour, is widespread in plants and animals, but the
molecular bases for this phenomenon remain elusive. Recent studies in hybrids and …

Polyploidy, or whole genome multiplication, is ubiquitous among angiosperms. Many crop
species are relatively recent allopolyploids, resulting from interspecific hybridization and …

Polyploidy, the condition of possessing more than two complete genomes in a cell, has
intrigued biologists for almost a century. Polyploidy is found in many plants and some animal …