Data from: Fitness of an allopolyploid rupicolous fern compared to its diploid progenitors: From sporogenesis to sporophyte formation

Emilia Pangua, Santiago Pajarón & Luis G. Quintanilla
PREMISE OF THE STUDY: When two populations of related cytotypes grow in sympatry, the rarer cytotype tends to be excluded due to a frequency-dependent mating disadvantage. Evolutionary models predict that polyploids, which are typically the rarer cytotype upon first formation, should have higher relative fitness and/or higher selfing rates to establish and then coexist with diploid parents. METHODS: We compared performance in early recruitment among three co-occurring rupicolous fern species: the allotetraploid Cheilanthes tinaei and...
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