"According to the EU and Czech marketing of forest reproductive material laws, 99 % purity of species is required. A method for species identification was devised by the Lower Saxony Research Institute. It is based on a leaf and acorn cup morphology and calculates a discriminant score for every leaf and acorn cup by the means of discriminant analysis in comparison with pure reference stands. Afterwards the stands were divided into classes of species purity. Leaf and acorn cup samples have been evaluatedin 218 oak certified stands of class A. Of the investigated stands only 113 corresponded to 99 % purity (class 1), 37 included 10 % leaves with the typical combination of the other species (class 2) and 68 included as far as 50 % leaves with the typicalcombination of the other species (class 3)."@en . "80-213-1164-9" . "\u010Cesk\u00E1 zem\u011Bd\u011Blsk\u00E1 univerzita v Praze. Fakulta lesnick\u00E1 a environment\u00E1ln\u00ED" . "Pedunculate oak; sessile oak; stand as certified source; species purity; morfological analysis; identifikation"@en . "Problematika ur\u010Dov\u00E1n\u00ED druh\u016F Quercus petraea (Matt.) Liebl. a Quercus robur L."@cs . . . . . . "Podle legislativy EU a \u010CR je pro obchod s reproduk\u010Dn\u00EDm materi\u00E1lem dub\u016F po\u017Eadov\u00E1na \u010Distota 99 %. MZe proto stanovilo jako \u00FAkol p\u0159ezkoum\u00E1n\u00ED druhov\u00E9ho slo\u017Een\u00ED porost\u016F dubu uznan\u00FDch ke sb\u011Bru osiva. Pr\u00E1ce byly zam\u011B\u0159eny na rozpozn\u00E1v\u00E1n\u00ED obou hlavn\u00EDch druh\u016F dubua p\u0159ekontrolov\u00E1n\u00ED druhov\u00E9 \u010Distoty porost\u016F kategorie A uznan\u00FDch pro sb\u011Br osiva. Jednalo se o sb\u011Br vzork\u016F list\u016F a \u010D\u00ED\u0161ek, m\u011B\u0159en\u00ED a hodnocen\u00ED jejich morfologick\u00FDch znak\u016F, statistick\u00E9 vyhodnocen\u00ED v\u00FDsledk\u016F diskrimina\u010Dn\u00ED anal\u00FDzou a jejich porovn\u00E1n\u00ED s \u010Dist\u00FDm srovn\u00E1vac\u00EDm porostem. V\u00FDstupem je histogram, ze kter\u00E9ho je z\u0159ejm\u00E9 zastoupen\u00ED obou druh\u016F, p\u0159\u00EDpadn\u011B nazna\u010Den pod\u00EDl hybrid\u016F. Na z\u00E1klad\u011B v\u00FDsledk\u016F byly porosty za\u0159azeny do kategori\u00ED druhov\u00E9 \u010Distoty (1 - 5). Bylo analyzov\u00E1no celkem 218 porost\u016F, po\u017Eadavek 99 % druhov\u00E9 \u010Distoty (kategorie 1) spl\u0148uje pouze 113, co\u017E je 52 %. Z toho 69 porost\u016F je dub letn\u00ED a 44 dub zimn\u00ED. P\u0159\u00EDm\u011Bs do 10 % (kategorie 2) m\u00E1 37 porost\u016F, vysokou p\u0159\u00EDm\u011Bs\u00ED druh\u00E9ho druhu dubu (kategorie 3), a to a\u017E 50 %, je tvo\u0159eno 68 porost\u016F." . . "Problematika ur\u010Dov\u00E1n\u00ED druh\u016F Quercus petraea (Matt.) Liebl. a Quercus robur L."@cs . "Perspektivy lesnick\u00E9 dendrologie a \u0161lecht\u011Bn\u00ED lesn\u00EDch d\u0159evin." . "3"^^ . . "Bened\u00EDkov\u00E1, Marie" . "Kysel\u00E1kov\u00E1, Jolana" . "Problems of species Quercus petraea (Matt.) Liebl. and Quercus robur L. identification"@en . "3"^^ . "Problems of species Quercus petraea (Matt.) Liebl. and Quercus robur L. identification"@en . "Problematika ur\u010Dov\u00E1n\u00ED druh\u016F Quercus petraea (Matt.) Liebl. a Quercus robur L." . . . . "Podle legislativy EU a \u010CR je pro obchod s reproduk\u010Dn\u00EDm materi\u00E1lem dub\u016F po\u017Eadov\u00E1na \u010Distota 99 %. MZe proto stanovilo jako \u00FAkol p\u0159ezkoum\u00E1n\u00ED druhov\u00E9ho slo\u017Een\u00ED porost\u016F dubu uznan\u00FDch ke sb\u011Bru osiva. Pr\u00E1ce byly zam\u011B\u0159eny na rozpozn\u00E1v\u00E1n\u00ED obou hlavn\u00EDch druh\u016F dubua p\u0159ekontrolov\u00E1n\u00ED druhov\u00E9 \u010Distoty porost\u016F kategorie A uznan\u00FDch pro sb\u011Br osiva. Jednalo se o sb\u011Br vzork\u016F list\u016F a \u010D\u00ED\u0161ek, m\u011B\u0159en\u00ED a hodnocen\u00ED jejich morfologick\u00FDch znak\u016F, statistick\u00E9 vyhodnocen\u00ED v\u00FDsledk\u016F diskrimina\u010Dn\u00ED anal\u00FDzou a jejich porovn\u00E1n\u00ED s \u010Dist\u00FDm srovn\u00E1vac\u00EDm porostem. V\u00FDstupem je histogram, ze kter\u00E9ho je z\u0159ejm\u00E9 zastoupen\u00ED obou druh\u016F, p\u0159\u00EDpadn\u011B nazna\u010Den pod\u00EDl hybrid\u016F. Na z\u00E1klad\u011B v\u00FDsledk\u016F byly porosty za\u0159azeny do kategori\u00ED druhov\u00E9 \u010Distoty (1 - 5). Bylo analyzov\u00E1no celkem 218 porost\u016F, po\u017Eadavek 99 % druhov\u00E9 \u010Distoty (kategorie 1) spl\u0148uje pouze 113, co\u017E je 52 %. Z toho 69 porost\u016F je dub letn\u00ED a 44 dub zimn\u00ED. P\u0159\u00EDm\u011Bs do 10 % (kategorie 2) m\u00E1 37 porost\u016F, vysokou p\u0159\u00EDm\u011Bs\u00ED druh\u00E9ho druhu dubu (kategorie 3), a to a\u017E 50 %, je tvo\u0159eno 68 porost\u016F."@cs . "Problematika ur\u010Dov\u00E1n\u00ED druh\u016F Quercus petraea (Matt.) Liebl. a Quercus robur L." . "RIV/00020702:_____/04:#0000080!RIV06-MZE-00020702" . . "RIV/00020702:_____/04:#0000080" . . . . . "582251" . "1"^^ . "2004-01-01+01:00"^^ . "Kostelec nad \u010Cern\u00FDmi lesy" . . . "Kostelec nad \u010Cern\u00FDmi lesy" . . "Z(MZE0002070202)" . "Beranov\u00E1, Lada" . . . . "20;20" . "[373019A0B9C9]" .