Genome size discriminates between closely related taxa Elytrigia repens and E. intermedia (Poaceae: Triticeae) and their hybrid

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F05%3A00025628" target="_blank" >RIV/67985939:_____/05:00025628 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Genome size discriminates between closely related taxa Elytrigia repens and E. intermedia (Poaceae: Triticeae) and their hybrid

Popis výsledku v původním jazyce

Flow cytometric and karyological investigations were performed on closely related taxa Elytrigia repens and E. intermedia (Poaceae: Triticeae) from the Czech Republic. DNA-hexaploids clearly prevailed among 238 examined plants and amounted to 96.2% of all samples. 2C-values SD for hexaploid Elytrigia repens and E. intermedia were estimated to 23.27 0.20 pg and 27.04 0.24 pg, respectively. Genome size thus allowed reliable separation of both species (difference ca 16%) as well as the discrimination of hybrid individuals. Natural hybridisation in E. repens ? intermedia alliance seems to be quite a common phenomenon as indicated from a large proportion (one sixth) of hexaploid samples with intermediate 2C-values. Previously, the crosses were most probablyneglected or misidentified due to their weak morphological differentiation. New nonaploid cytotypes (2n=9x=63) were revealed for both species as well as for the hybrids (determined on the basis of morphological characters), representing

Název v anglickém jazyce

Genome size discriminates between closely related taxa Elytrigia repens and E. intermedia (Poaceae: Triticeae) and their hybrid

Popis výsledku anglicky

Flow cytometric and karyological investigations were performed on closely related taxa Elytrigia repens and E. intermedia (Poaceae: Triticeae) from the Czech Republic. DNA-hexaploids clearly prevailed among 238 examined plants and amounted to 96.2% of all samples. 2C-values SD for hexaploid Elytrigia repens and E. intermedia were estimated to 23.27 0.20 pg and 27.04 0.24 pg, respectively. Genome size thus allowed reliable separation of both species (difference ca 16%) as well as the discrimination of hybrid individuals. Natural hybridisation in E. repens ? intermedia alliance seems to be quite a common phenomenon as indicated from a large proportion (one sixth) of hexaploid samples with intermediate 2C-values. Previously, the crosses were most probablyneglected or misidentified due to their weak morphological differentiation. New nonaploid cytotypes (2n=9x=63) were revealed for both species as well as for the hybrids (determined on the basis of morphological characters), representing

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EF - Botanika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2005

Kód důvěrnosti údajů

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

Název periodika

Folia Geobotanica

ISSN

1211-9520

e-ISSN

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Svazek periodika

40

Číslo periodika v rámci svazku

-

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

18

Strana od-do

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Kód UT WoS článku

000233038100005

EID výsledku v databázi Scopus

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