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Cited by 15 publications
(14 citation statements)
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“…Similarly, some populations of the allotetraploid Dryopteris corleyi had higher abortion percentages than its diploid parents (Quintanilla and Escudero, ). By contrast, Hornych and Ekrt () obtained similar abortion percentages between allotetraploids and related diploids of Dryopteris and Asplenium . They suggested that environmental and seasonal factors may also affect sporogenesis, since some individuals of diploid species had high abortion percentages.…”
Section: Discussionmentioning
confidence: 91%
“…Similarly, some populations of the allotetraploid Dryopteris corleyi had higher abortion percentages than its diploid parents (Quintanilla and Escudero, ). By contrast, Hornych and Ekrt () obtained similar abortion percentages between allotetraploids and related diploids of Dryopteris and Asplenium . They suggested that environmental and seasonal factors may also affect sporogenesis, since some individuals of diploid species had high abortion percentages.…”
Section: Discussionmentioning
confidence: 91%
“…Rare sex/parent combinations of D. ×ambroseae and D. ×deweveri may not be less likely to form (i.e., they may not be limited by prezygotic barriers) but simply less likely to survive. Fern sexual hybrids tend to form mostly aborted spores (Wagner and Chen, ; Hornych and Ekrt, ). So, hybrids may form and be viable, but their contribution to future generations is severely limited.…”
Section: Discussionmentioning
confidence: 99%
“…The model also presumes that hybridization is bidirectional—that is, each progenitor has an equal chance of providing either gamete to the hybrid. Finally, hybrid individuals are sterile (Hornych and Ekrt, ). Therefore, they do not form subsequent generations and their frequency depends solely on the frequencies of the parents.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Nothospecies—meaning the mainly sterile offspring of hybridization events—enable the recognition of reticulate evolution (Wagner, 1983), including the later formation of species originating from these progenitor nothospecies (Hunt et al, 2011; Sigel, 2016; Hornych et al, 2019; Schnittler et al, 2019) and could allow gene flow to be traced between closely related species by way of hybrid bridges. As a consequence of their transitional state, nothospecies are differentiated from sexual and apomictic species by the highly diminished or total inability to form regular spores, which may be assessed by the spore abortion index (Hornych & Ekrt, 2017).…”
Section: Introductionmentioning
confidence: 99%