Natural hybridization between diploid Ficaria calthifolia and tetraploid Ficaria verna subsp. verna in central Europe: evidence from morphology, ecology and life-history traits

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F19%3A00509536" target="_blank" >RIV/67985939:_____/19:00509536 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/19:73596478

Result on the web

<a href="http://hdl.handle.net/11104/0304477" target="_blank" >http://hdl.handle.net/11104/0304477</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.23855/preslia.2019.179" target="_blank" >10.23855/preslia.2019.179</a>

Result language

angličtina

Original language name

Natural hybridization between diploid Ficaria calthifolia and tetraploid Ficaria verna subsp. verna in central Europe: evidence from morphology, ecology and life-history traits

Original language description

The genus Ficaria is a taxonomically intricate group in which polyploidization and hybridization contribute to taxa diversification. In central Europe, populations of diploid F. calthifolia and tetraploid F. versa subsp. versa occasionally come into contact, which results in an interspecific triploid hybrid, as recently demonstrated using molecular markers, genome size estimation and experimental crossing. In this study, we aimed to estimate the frequency and distribution of the triploid hybrid in central Europe, to identify those phenotypic traits that can be used to discriminate between hybrid and parental taxa and compare the phenology, pollen viability, sexual and asexual reproduction and niche differentiation of the triploid hybrid and parental taxa. Flow-cytometry analyses of 1171 individuals sampled from 67 localities revealed that triploid hybrids were regularly found at 89% of the sites sampled where there were sympatric populations of both parental taxa, with a mean percentage of 19.4% occurring at sites where there was a mixture of cytotypes. No pure hybrid population was found. The hybrids were intermediate between the parental taxa in most morphological characters and did not show any novel morphological characters. The characters that best differentiate the taxonomic groups were the production of axillary bulbils, aborted and well-developed achenes, leaf shape and plant habit. Almost all hybrids were sexually sterile: the pollen viability was considerably reduced (mean 8.4%) and on average 98% of the achenes were aborted. Local dispersal of the hybrids is possible through the production of bulbils in the leaf axils, although the number of bulbils per node and the mean weight of one bulbil were two and three times lower in the hybrid than in F. verna subsp. versa. The hybrid niche was intermediate between those of the parental taxa but shifted slightly towards that of F. yenta subsp. verna. In addition, the taxonomic and nomenclatural treatment of the hybrid, which is described as Ficaria xsellii Duchoslav, Popelka et Travn., as well as a key for identifying the central European taxa of Ficaria. are presented.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10611 - Plant sciences, botany

Project

<a href="/en/project/GA206%2F09%2F1126" target="_blank" >GA206/09/1126: The role of hybridization in plant evolution ? In situ hybridization technique</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Preslia

ISSN

0032-7786

e-ISSN

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Volume of the periodical

91

Issue of the periodical within the volume

3

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

34

Pages from-to

179-212

UT code for WoS article

000489025300001

EID of the result in the Scopus database

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