Frequent occurrence of triploid hybrids Festuca pratensis × F. apennina in the Swiss Alps

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F18%3A00495303" target="_blank" >RIV/61389030:_____/18:00495303 - isvavai.cz</a>

Alternative codes found

RIV/67985939:_____/18:00495303

Result on the web

<a href="http://dx.doi.org/10.1007/s00035-018-0204-7" target="_blank" >http://dx.doi.org/10.1007/s00035-018-0204-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00035-018-0204-7" target="_blank" >10.1007/s00035-018-0204-7</a>

Result language

angličtina

Original language name

Frequent occurrence of triploid hybrids Festuca pratensis × F. apennina in the Swiss Alps

Original language description

The occurrence of triploid hybrids in nature is scarce due to the so-called triploid block representing formation of nonviable progeny after mating diploid with tetraploid. Here we describe frequent presence of triploids originating from hybridization of diploid Festuca pratensis with tetraploid F. apennina in the Swiss Alps. F. pratensis is a forage grass grown in lowlands and up to 1800m a.s.l., while F. apennina is a mountain grass found in elevations from 1100 to 2000m a.s.l. In the overlapping zone these species often grow sympatrically and triploid hybrids have been observed. We show that elevation is the main factor in the distribution of plants with various ploidy levels. Diploids occupy lower elevations, while triploids predominate in the mid-elevation zones and tetraploids are the most frequent in higher elevations. Other factors, such as topography and soil composition probably have only marginal effects on the distribution of the plants with different ploidy levels. Triploids seem to be frequently formed in the Swiss Alps and crosses in both directions are involved in the formation of triploid hybrids. As shown by chloroplast DNA analysis, F. apennina more frequently serves as female. Our analysis suggests that in the mid-elevation zones, triploids have a higher level of competitiveness than both parents. Triploids can overgrow microhabitats to a much higher extent than tetraploids. Such frequent occurrence and local dominance of triploids can at least be partially explained by asexual reproduction. Using DNA markers, we show that triploids can disperse ramets of a single clone over a distance of at least 14.4m.

Czech name

—

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

—

OECD FORD branch

10611 - Plant sciences, botany

Project

<a href="/en/project/LO1204" target="_blank" >LO1204: Sustainable development of research in the Centre of the Region Haná</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

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

Name of the periodical

Alpine Botany

ISSN

1664-2201

e-ISSN

—

Volume of the periodical

128

Issue of the periodical within the volume

2

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

121-132

UT code for WoS article

000444944000003

EID of the result in the Scopus database

2-s2.0-85046451094