"Vyvadilov\u00E1, Miroslava" . . . . "4"^^ . "Mikrospory t\u0159\u00ED F1 hybrid\u016F ozim\u00E9 \u0159epky byly kultivov\u00E1ny v m\u00E9diu s p\u0159\u00EDdavkem antimitotick\u00FDch l\u00E1tek kolchicinu, oryzalinu a trifluralinu. Anal\u00FDza ploidie prok\u00E1zala, \u017Ee o\u0161et\u0159en\u00ED v\u0161emi antimitock\u00FDmi l\u00E1tkami zv\u00FD\u0161ilo v\u00FDznamn\u011B procento dihaploidn\u00EDch (DH) rostlin. Pr\u016Fm\u011Brn\u00FD pod\u00EDl DH rostlin po aplikaci trifluralinu byl 85,7 %, kolchicinu 74,1 % a oryzalinu 66,5 %, zat\u00EDmco pod\u00EDl spont\u00E1nn\u00ED diploidizace byl pouze 42,3 %. Aplikace kolchicinu na celistv\u00E9 rostliny nezv\u00FD\u0161ila v\u00FDznamn\u011B pod\u00EDl DH rostlin (55,6 %). P\u0159esto\u017Ee nebyly zji\u0161t\u011Bny statisticky v\u00FDznamn\u00E9 rozd\u00EDly mezi aplikac\u00ED jednotliv\u00FDch antimitotick\u00FDch l\u00E1tek, trifluralin se uk\u00E1zal jako nejvhodn\u011Bj\u0161\u00ED, vzhledem k pozitivn\u00EDmu efektu na v\u00FDvoj embry\u00ED a regeneraci celistv\u00FDch rostlin."@cs . "Microspores of three winter rape F1 hybrids were cultivated in the presence of antimitotic chemicals colchicine, trifluralin and oryzalin to evaluate their effect on frequency of embryo formation, embryo development, plant regeneration and diploidization rate. Ploidy level evaluation of 1709 flowering microspore derived regenerants demonstrated that in vitro treatment with all antimitotic chemicals increased significantly the rate of doubled haploid (DH) plants. Mean rate of DH plants after application of trifluralin was 85.7 %, colchicine 74.1 % and 66.5 % after application of oryzalin, while the rate of spontaneous diploidization was only 42.3 %. The application of colchicine to in vivo regenerants did not increase the mean rate of DH plants (55.6 %). In addition, the diploidization rate was sufficient and stable in all genotypes tested. According to our results, application of trifluralin to microspore culture could be an effective chromosome doubling tool for efficient production of doubled haplo"@en . "Z(MZE0002700602)" . "Pie\u0161\u0165any" . "Pie\u0161\u0165any" . "978-80-88872-65-8" . . "RIV/00027006:_____/07:2056" . "antimitotic agents; Brassica napus; diploidization; doubled haploids; microspore culture; winter oilseed rape"@en . . "Mikrospory t\u0159\u00ED F1 hybrid\u016F ozim\u00E9 \u0159epky byly kultivov\u00E1ny v m\u00E9diu s p\u0159\u00EDdavkem antimitotick\u00FDch l\u00E1tek kolchicinu, oryzalinu a trifluralinu. Anal\u00FDza ploidie prok\u00E1zala, \u017Ee o\u0161et\u0159en\u00ED v\u0161emi antimitock\u00FDmi l\u00E1tkami zv\u00FD\u0161ilo v\u00FDznamn\u011B procento dihaploidn\u00EDch (DH) rostlin. Pr\u016Fm\u011Brn\u00FD pod\u00EDl DH rostlin po aplikaci trifluralinu byl 85,7 %, kolchicinu 74,1 % a oryzalinu 66,5 %, zat\u00EDmco pod\u00EDl spont\u00E1nn\u00ED diploidizace byl pouze 42,3 %. Aplikace kolchicinu na celistv\u00E9 rostliny nezv\u00FD\u0161ila v\u00FDznamn\u011B pod\u00EDl DH rostlin (55,6 %). P\u0159esto\u017Ee nebyly zji\u0161t\u011Bny statisticky v\u00FDznamn\u00E9 rozd\u00EDly mezi aplikac\u00ED jednotliv\u00FDch antimitotick\u00FDch l\u00E1tek, trifluralin se uk\u00E1zal jako nejvhodn\u011Bj\u0161\u00ED, vzhledem k pozitivn\u00EDmu efektu na v\u00FDvoj embry\u00ED a regeneraci celistv\u00FDch rostlin." . . "Zlep\u0161en\u00E1 metoda produkce dihaploidn\u00EDch lini\u00ED \u0159epky ozim\u00E9" . "SCPV - V\u00FDskumn\u00FD \u00FAstav rastlinnej v\u00FDroby Pie\u0161\u0165any" . "462559" . "3"^^ . . "An improved method for production of doubled haploid lines of winter oilseed rape"@en . . "2007-11-13+01:00"^^ . "26;29" . "Kl\u00EDma, Miroslav" . "3"^^ . "Nov\u00E9 poznatky z genetiky a \u0161lachtenia polnohospod\u00E1rskych rastl\u00EDn" . . . "Zlep\u0161en\u00E1 metoda produkce dihaploidn\u00EDch lini\u00ED \u0159epky ozim\u00E9"@cs . . "RIV/00027006:_____/07:2056!RIV08-MZE-00027006" . . . . . . "Zlep\u0161en\u00E1 metoda produkce dihaploidn\u00EDch lini\u00ED \u0159epky ozim\u00E9"@cs . "An improved method for production of doubled haploid lines of winter oilseed rape"@en . . "[3269CF09FEBE]" . "Zlep\u0161en\u00E1 metoda produkce dihaploidn\u00EDch lini\u00ED \u0159epky ozim\u00E9" . "Ku\u010Dera, Vratislav" . . . . .