Hybrid speciation
Homoploid and Polyploid
Image result for coffea arabica
Image result for Gossypium hirsutum Image result for nicotiana tabacum plant Image result for
Tragopogon castellanus Image result for helianthus anomalus Image result for triticum aestivum
Image result for Hepatica transsilvanica Image result for Polypodium hesperium

Homoploid vs Polyploid hybrid speciation
Image result for helianthus anomalus Image result for triticum aestivum Related image
Soltis & Soltis (2009) The Role of Hybridization in Plant Speciation. Ann Rev 60: 561-588.
Otto (2007) The Evolutionary Consequences of Polyploidy. Cell 131: 452-462.
Helianthus anomalus (Asteraceae)
Triticum aestivum (Poaceae)
Galax ucreolata (Diapensiaceae)

Senecio squalidus = S. chrysanthemifolius x S. aethnensis



https://lh3.googleusercontent.com/-d2p2RTn2BrY/T1_JFeXOSPI/AAAAAAAAR4Q/b-uSOzto1XE/s564/tubetree_gd
.png
https://lh3.googleusercontent.com/-K4K4SSAWkAY/T1_JE1YYXFI/AAAAAAAAR38/wTj7QijJO-E/s565/tube_tree_i
ls.pngg
Schumer et al. (2014) How common is homoploid hybrid speciation. Evolution 68: 1553–1560.
Gross and Riesberg (2005) The Ecological Genetics of Homoploid Hybrid Speciation. J Hered 96:
241–252.
Image result for senecio mt. etna Image result for desert salt marsh helianthus paradoxus
Homoploid hybrid speciation – how do we recognize a homoploid hybrid species?

Image result for senecio mt. etna
Homoploid hybrid speciation in allopatry – Senecio squalidus
Abbott et al. (2010) Homoploid hybrid speciation in action. Taxon 59: 1375–1386.

Hegarty & Hiscock (2005) Hybrid speciation in plants: new insights from molecular studies. New
Phytol 165: 411–423.
Buerkle & Riesberg (2008) The rate of genome stabilization in homoploid hybrid species. Evolution
62: 266–275.
Homoploid hybrid speciation – recombinational (chromosomal) model
Image result for helianthus anomalus Related image Image result for "helianthus paradoxus"
selection
drift

Image result for pinus densata hybrid
Homoploid hybrid speciation – ecological divergence
Image result for desert salt marsh helianthus paradoxus Image result for helianthus hybrids
distribution
Iris fulva
Iris brevicaulis
Iris hexagona
Iris nelsonii
X
X
=
Gross & Riesberg (2005) The Ecological Genetics of Homoploid Hybrid Speciation. J Hered 96:
241–252.
Nolte & Tautz (2009) Understanding the onset of hybrid speciation. Trends in Genetics 26: 54–58.
Pinus densata

Polyploid hybrid speciation
homoploid hybrid
allopolyploid hybrid
Soltis & Soltis (2009) The Role of Hybridization in Plant Speciation. Ann Rev 60: 561-588.
Paun et al. (2009) Hybrid speciation in angiosperms: Parental divergence drives ploidy. New Phytol
182: 507-518.
Otto (2007) The Evolutionary Consequences of Polyploidy. Cell 131: 452-462.
Ramsey & Schemske (1998) Pathways, mechanisms and rates of polyploid formation in flowering plants.
Ann Rev 29: 467-501
Tolmiea diplomenziesii (2n=14), T. menziesii (2n=28)

Polyploid hybrid speciation - origin, reproductive isolation
Soltis & Soltis (2009) The Role of Hybridization in Plant Speciation. Ann Rev 60: 561-588.
Riesberg & Willis (2007) Plant Speciation. Science 317: 910-914.
Ramsey & Schemske (1998) Pathways, mechanisms and rates of polyploid formation in flowering plants.
Ann Rev 29: 467-501.

Soltis & Soltis (2009) The Role of Hybridization in Plant Speciation. Ann Rev 60: 561-588.
Barringer (2007) Polyploidy nd self-fertilization in flowering plants. Am J Bot 94: 1527-1533.
Comai (2005) The advantages and disadvantages of being polyploid. Nature Reviews 6: 837-846.
alternativní popis obrázku chybí
Polyploid hybrid speciation – disadvantages and advantages
Image result for špicberky
Silene acaulis

Husband et al. (2013) The Incidence of Polyploidy in Natural Plant Populations: Major Patterns and
Evolutionary Processes. In: Plant Genome Diversity Vol. 2, Springer, pp 255-276.
Image result for Sedum suaveolens
Sedum suaveolens
Netrium digitans
Image result for leptodictyum riparium
Leptodictyum riparium
Image result for "ophioglossum reticulatum"
Ophioglossum
reticulatum
Image result for sequoia sempervirens
Sequia
sempervirens

Polyploid hybrid speciation – recent and ancient polyploid speciation
Soltis & Soltis (2009) The Role of Hybridization in Plant Speciation. Ann Rev 60: 561-588.
Wood et al. (2009) The frequency of polyploid speciation in vascular plants. PNAS 106: 13875-13879.