Flow cytometry, a suitable method for detection of ploidy level and reproductive variability within ...
ROTREKLOVÁ, Olga, Anna KRAHULCOVÁ and František KRAHULEC. Flow cytometry, a suitable method for detection of ploidy level and reproductive variability within the hawkweeds populations, Hieracium subgen. Pilosella. 2007. |
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Original name | Flow cytometry, a suitable method for detection of ploidy level and reproductive variability within the hawkweeds populations, Hieracium subgen. Pilosella |
Name in Czech | Průtoková cytometrie, metoda vhodná ke studiu karyologické a reproduktivní variability v poulacích jestřábníků z podrodu Pilosella |
Authors | ROTREKLOVÁ, Olga (203 Czech Republic, guarantor), Anna KRAHULCOVÁ (203 Czech Republic) and František KRAHULEC (203 Czech Republic). |
Edition | 2007. |
Other information | |
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Original language | English |
Type of outcome | Conference abstract |
Field of Study | 10600 1.6 Biological sciences |
Country of publisher | United States of America |
Confidentiality degree | is not subject to a state or trade secret |
RIV identification code | RIV/00216224:14310/07:00022539 |
Organization unit | Faculty of Science |
UT WoS | 000249187800067 |
Keywords in English | flow cytometry; ploidy level; mode of reproduction |
Tags | flow cytometry, mode of reproduction, ploidy level |
Tags | International impact |
Changed by | Changed by: Mgr. Olga Rotreklová, Ph.D., učo 1425. Changed: 15/3/2010 16:16. |
Abstract |
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Hieracium subgen. Pilosella group has a high diversity of species, subspecies and hybridogenous types which is based on the reproductive diversity (clonal growth and sexual and/or apomictic seed reproduction). The study found that (1) Apomicts produced more variability than that of sexuals. Whereas progeny of sexual mothers was formed almost exclusively by hybridization via fusion of reduced gametes (n+n hybrids), the progeny of facultatively apomictic mothers has originated via four different pathways, i.e. apomixis (somatic parthenogenesis, 2n+0), hybridization via fusion either of reduced (n+n hybrids) or unreduced (2n+n hybrids) gametes and haploid parthenogenesis (n+0). (2) The high-polyploid hybrid biotypes (heptaploids, octoploids) generated a much variable progeny. (3) Higher ploidy level variability within the seeds than that within the seedlings confirmed the selection of specific progeny classes (namely polyhaploids, n+0) during germination and early development of seedlings. |
Abstract (in Czech) |
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Jestřábníky z podrodu Pilosella jsou skupina taxonů lišících se reprodukčními způsoby. Vhodnou metodou pro studium reprodukčních způsobů je průtoková cytometrie zralých nažek, pomocí níž bylo zjištěno, že (1) apomikti produkují variabilnější potomstvo než sexuálové; zatímco potomstvo sexuálů vzniklao výhradně hybridizací redukovaných gamet (n+n), potomstvo fakultativních apomiktů vznikalo hybridizací redukovaných i neredukovaných gamet (N+n, 2n+n), apomixí (2n+0) a haploidní parthenogenezí (n+0). (2) Vysoce polyploidní rostliny (heptaploidní, octoploidní) generovaly variabilní potomstvo. (3) Ve stadiu semen byla v potomstvu zjištěna vyšší variabilita než ve stadiu semenáčků, což svědčí o selekci určitých getypů v průběhu klíčení semen a v ranných stadiích růstu semenáčků. |
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GA206/07/0059, research and development project | Name: Mikroevoluční aspekty zbytkové sexuality apomiktických rostlin: detekce, kvantifikace a projevy v populacích jestřábníků podrodu Pilosella |
Investor: Czech Science Foundation | |
LC06073, research and development project | Name: Centrum pro výzkum biodiverzity |
Investor: Ministry of Education, Youth and Sports of the CR, Biodiversity Research Center | |
MSM0021622416, plan (intention) | Name: Diverzita biotických společenstev a populací: kauzální analýza variability v prostoru a čase |
Investor: Ministry of Education, Youth and Sports of the CR, Diversity of Biotic Communities and Populations: Causal Analysis of variation in space and time |
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