ArticleAoB PLANTS2015
250 years of hybridization between two biennial herb species without speciation.
Article in AoB PLANTS, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
5 citing papers in PubMed.
- A Trojan horse inside the gates: Alien-native mating interactions in mixed populations of Solidago taxa.Plant biology (Stuttgart, Germany) · 2026Article
- Hybrid fertility and the rarity of homoploid hybrid speciation.AoB PLANTS · 2025Article
- The complete chloroplast genome sequence of an invasive plant,Mitochondrial DNA. Part B, Resources · 2024Article
- Novel Approaches for Species Concepts and Delimitation in Polyploids and Hybrids.Plants (Basel, Switzerland) · 2022Review
- Genome evolution in alpine oat-like grasses through homoploid hybridization and polyploidy.AoB PLANTS · 2016Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
14 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Hybridization between plant species can generate novel morphological diversity and lead to speciation at homoploid or polyploid levels. Hybrids between biennial herbs Tragopogon pratensis and T. porrifolius have been studied in experimental and natural populations for over 250 years. Here we examine their current status in natural populations in southeast England. All hybrids found were diploid; they tended to grow taller and with more buds than their parental species; many showed partial fertility; a few showed evidence of backcrossing. However, we found no evidence to suggest that the hybrids are establishing as a new species, nor can we find literature documenting speciation of these hybrids elsewhere. This lack of speciation despite at least 250 years of hybridization contrasts with the fact that both parental species have formed new allopolyploid species through hybridization with another diploid, T. dubius. Understanding why hybrids often do not speciate, despite repeated opportunities, would enhance our understanding of both the evolutionary process and risk assessments of invasive species.
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Registered trials
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