. "1"^^ . "Orchids are evolutionary young, extremely diversified plant family suitable for studying recent evolutionary processes. It has been suggested that selection for different pollinators is the main force behind orchid diversification. However, many orchids growing in sympatry are generalist in pollinator choice and must employ other reproductive isolation mechanisms. The project focuses on the study of occurrence of prezygotic and postzygotic reproductive barriers in orchids, which can play important roles in orchid speciation. The project is unique in a way that it combines very efficient modern tools (molecular genetics, gas chromatography, insect electrophysiology and plant cytometry) to analyze speciation processes."@en . "0"^^ . "2006-01-01+01:00"^^ . "3"^^ . "1260"^^ . "Speciation processes in orchids"@en . "1260"^^ . . . . . . "3"^^ . "evolutionary process; hybrid; orchids; polyploidy; prezygotic and postzygotic reproductive barriers; speciation; sympatry"@en . "Orchideje jsou jednou z druhov\u011B nejbohat\u0161\u00EDch \u010Deled\u00ED rostlinn\u00E9 \u0159\u00ED\u0161e. Jde o \u010Dele\u010F evolu\u010Dn\u011B mladou, kter\u00E1 je vhodn\u00E1 ke studiu recentn\u011B prob\u00EDhaj\u00EDc\u00EDch evolu\u010Dn\u00EDch proces\u016F. P\u0159edpokl\u00E1d\u00E1 se, \u017Ee \u00FAzk\u00E1 specializace orchidej\u00ED na opylova\u010De byla a je hlavn\u00EDm hnac\u00EDm motorem jejich radiace. Nicm\u00E9n\u011B posledn\u00ED studie nazna\u010Duj\u00ED, \u017Ee existuje mnoho druh\u016F orchidej\u00ED, kter\u00E9 se vyskytuj\u00ED spole\u010Dn\u011B a maj\u00ED stejn\u00E9 opylova\u010De, a tud\u00ED\u017E mus\u00ED vyu\u017E\u00EDvat jin\u00FDch izola\u010Dn\u00EDch mechanism\u016F reprodukce. Tento projekt je zam\u011B\u0159en na studium p\u0159edembryon\u00E1ln\u00EDch a postembryon\u00E1ln\u00EDch reproduk\u010Dn\u00EDch bari\u00E9r u orchidej\u00ED, kter\u00E9 mohou hr\u00E1t roli p\u0159i jejich speciaci. P\u0159i \u0159e\u0161en\u00ED projektu bude vyu\u017Eito \u0161irok\u00E9 spektrum modern\u00EDch analytick\u00FDch n\u00E1stroj\u016F: molekul\u00E1rn\u00ED genetika, plynov\u00E1 chromatografie, hmotnostn\u00ED spektrometrie, elektrofyziologie hmyzu, rostlinn\u00E1 cytometrie."@cs . "Specia\u010Dn\u00ED procesy u vstava\u010Dovit\u00FDch"@cs . . . . "0"^^ . . . . "2008-12-31+01:00"^^ .