ArticleAnnals of botany2013
Breeding systems, hybridization and continuing evolution in Avon Gorge Sorbus.
Article in Annals of botany, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
18 citing papers in PubMed, 62 citations in OpenAlex.
- Phytochemical Characterisation ofPlants (Basel, Switzerland) · 2025Article
- Apomictic Mountain Whitebeam (Biology · 2023Article
- Reproduction Modes and Conservation Implications in Three PolyploidPlants (Basel, Switzerland) · 2023Article
- Variability of Reproduction Pathways in the Central-European Populations of Hawthorns with Emphasis on Triploids.Plants (Basel, Switzerland) · 2022Article
- Complete chloroplast genomes of Sorbus sensu stricto (Rosaceae): comparative analyses and phylogenetic relationships.BMC plant biology · 2022Article
- Genome Size, Cytotype Diversity and Reproductive Mode Variation ofPlants (Basel, Switzerland) · 2021Article
- Hybridization and introgression of native and foreignAoB PLANTS · 2021Article
- Article
- Apomixis and Hybridization Drives Reticulate Evolution and Phyletic Differentiation inFrontiers in plant science · 2018Article
- Origin and genetic differentiation of pink-flowered Sorbus hybrids in the Western Carpathians.Annals of botany · 2017Article
- Breeding system and spatial isolation from congeners strongly constrain seed set in an insect-pollinated apomictic tree: Sorbus subcuneata (Rosaceae).Scientific reports · 2017Article
- Isolation and characterization of microsatellite loci inApplications in plant sciences · 2017Article
- Molecular Evidence for Natural Hybridization betweenFrontiers in plant science · 2017Article
- Pathways to polyploidy: indications of a female triploid bridge in the alpine speciesPlant systematics and evolution = Entwicklungsgeschichte und Systematik der Pflanzen · 2017Article
- When sexual meets apomict: genome size, ploidy level and reproductive mode variation of Sorbus aria s.l. and S. austriaca (Rosaceae) in Bosnia and Herzegovina.Annals of botany · 2015Article
- High molecular diversity in the true service tree (Sorbus domestica) despite rareness: data from Europe with special reference to the Austrian occurrence.Annals of botany · 2015Article
- Molecular evidence for natural hybridization between wild loquat (Eriobotrya japonica) and its relative E. prinoides.BMC plant biology · 2014Article
- Reticulate evolution in North American black-fruited hawthorns (Crataegus section Douglasia; Rosaceae): evidence from nuclear ITS2 and plastid sequences.Annals of botany · 2014Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsInterspecific hybridization and polyploidy are key processes in plant evolution and are responsible for ongoing genetic diversification in the genus Sorbus (Rosaceae). The Avon Gorge, Bristol, UK, is a world 'hotspot' for Sorbus diversity and home to diploid sexual species and polyploid apomictic species. This research investigated how mating system variation, hybridization and polyploidy interact to generate this biological diversity.
methodsMating systems of diploid, triploid and tetraploid Sorbus taxa were analysed using pollen tube growth and seed set assays from controlled pollinations, and parent-offspring genotyping of progeny from open and manual pollinations. KEY
resultsDiploid Sorbus are outcrossing and self-incompatible (SI). Triploid taxa are pseudogamous apomicts and genetically invariable, but because they also display self-incompatibility, apomictic seed set requires pollen from other Sorbus taxa - a phenomenon which offers direct opportunities for hybridization. In contrast tetraploid taxa are pseudogamous but self-compatible, so do not have the same obligate requirement for intertaxon pollination.
conclusionsThe mating inter-relationships among Avon Gorge Sorbus taxa are complex and are the driving force for hybridization and ongoing genetic diversification. In particular, the presence of self-incompatibility in triploid pseudogamous apomicts imposes a requirement for interspecific cross-pollination, thereby facilitating continuing diversification and evolution through rare sexual hybridization events. This is the first report of naturally occurring pseudogamous apomictic SI plant populations, and we suggest that interspecific pollination, in combination with a relaxed endosperm balance requirement, is the most likely route to the persistence of these populations. We propose that Avon Gorge Sorbus represents a model system for studying the establishment and persistence of SI apomicts in natural populations.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.