Spore Fitness Components Do Not Differ Between Diploid and Allotetraploid Species of Dryopteris (Dryopteridaceae) | Zendy

Luís G. Quintanilla | Zendy; Adrián Escudero | Zendy

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Spore Fitness Components Do Not Differ Between Diploid and Allotetraploid Species of Dryopteris (Dryopteridaceae)

Author(s) -

Luís G. Quintanilla,

Adrián Escudero

Publication year - 2006

Publication title -

annals of botany

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.567

H-Index - 176

eISSN - 1095-8290

pISSN - 0305-7364

DOI - 10.1093/aob/mcl137

Subject(s) - biology , ploidy , spore , germination , dryopteris , botany , spore germination , apomixis , dryopteridaceae , fern , genetics , gene

Although allopolyploidy is a prevalent speciation mechanism in plants, its adaptive consequences are poorly understood. In addition, the effects of allopolyploidy per se (i.e. hybridization and chromosome doubling) can be confounded with those of subsequent evolutionary divergence between allopolyploids and related diploids. This report assesses whether fern species with the same ploidy level or the same altitudinal distribution have similar germination responses to temperature. The effects of polyploidy on spore abortion and spore size are also investigated, since both traits may have adaptive consequences.

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