"1"^^ . . "Chrtek, Jind\u0159ich" . "Sennikov, A. N." . "Hieracium xgrofae - a rediscovered diploid hybrid from the Ukrainian Carpathians" . . "4" . . . "Hieracium xgrofae - a rediscovered diploid hybrid from the Ukrainian Carpathians" . . "Hieracium xgrofae - znovuobjeven\u00FD diploidn\u00ED hybrid z Ukrajinsk\u00FDch Karpat"@cs . "RIV/67985939:_____/06:00081413!RIV07-AV0-67985939" . "[CC3FFBAD2DD1]" . "61" . "Diploid hybrid plants (2n = 18) between sexual diploid cytotypes of Hieracium alpinum and H. umbellatum were found in the Ukrainian Eastern Carpathians. They were identified with H. xgrofae WO\u0141., originally used for the combination H. decipiens x H. umbellatum var. lactaris. As H. decipiens sensu WO\u0141. (non TAUSCH) does not produce viable pollen grains and is most probably a polyploid apomict, it is unlikely to produce diploid hybrid plants with diploid H. umbellatum. Both parent species, Hieracium alpinum and H. umbellatum are also given by WO\u0141OSZCZAK from the original locality. Thus we conclude that H. xgrofae is result of hybridization between H. alpinum and high mountain form of H. umbellatum. Hybrid plants are morphologically intermediate between the parent species, and moreover resemble closely or they are identical with the experimental hybrids of the same parent combination. Hybrids produce rather high amount of homogeneously-sized pollen grains (values of standard deviation and coefficient ..." . . . "RIV/67985939:_____/06:00081413" . "Diploid hybrid plants (2n = 18) between sexual diploid cytotypes of Hieracium alpinum and H. umbellatum were found in the Ukrainian Eastern Carpathians. They were identified with H. xgrofae WO\u0141., originally used for the combination H. decipiens x H. umbellatum var. lactaris. As H. decipiens sensu WO\u0141. (non TAUSCH) does not produce viable pollen grains and is most probably a polyploid apomict, it is unlikely to produce diploid hybrid plants with diploid H. umbellatum. Both parent species, Hieracium alpinum and H. umbellatum are also given by WO\u0141OSZCZAK from the original locality. Thus we conclude that H. xgrofae is result of hybridization between H. alpinum and high mountain form of H. umbellatum. Hybrid plants are morphologically intermediate between the parent species, and moreover resemble closely or they are identical with the experimental hybrids of the same parent combination. Hybrids produce rather high amount of homogeneously-sized pollen grains (values of standard deviation and coefficient ..."@en . "Hieracium xgrofae - a rediscovered diploid hybrid from the Ukrainian Carpathians"@en . . "9"^^ . . "Mr\u00E1z, P." . "SK - Slovensk\u00E1 republika" . "Biologia" . "Hieracium xgrofae - a rediscovered diploid hybrid from the Ukrainian Carpathians"@en . "365;373" . "0006-3088" . "Diploidn\u00ED hybridn\u00ED rostliny (2n = 18) mezi sexu\u00E1ln\u00EDmi cytotypy Hieracium alpinum and H. umbellatum byly nalezeny v Ukrajinsk\u00FDch V\u00FDchodn\u00EDch Karpatech. Rostliny odpov\u00EDdaj\u00ED H. xgrofae WO\u0141., kter\u00E9 bylo p\u016Fvodn\u011B pops\u00E1no jako H. decipiens x H. umbellatum var. lactaris. Hieracium decipiens sensu WO\u0141. (non TAUSCH) ale neprodukuje vit\u00E1ln\u00ED pyl a je polyploidn\u00EDm apomiktem, a je proto velmi nepravd\u011Bpodobn\u00E9, \u017Ee by se \u00FA\u010Dastnilo k\u0159\u00ED\u017Een\u00ED s H. umbellatum. Woloszczak p\u0159itom z origin\u00E1ln\u00ED lokality uv\u00E1d\u00ED i Hieracium alpinum. Je proto z\u0159ejm\u00E9, \u017Ee H. xgrofae vznik\u00E1 k\u0159\u00ED\u017Een\u00EDm H. alpinum a vysokohorsk\u00E9 formy H. umbellatum. Hybridn\u00ED rostliny jsou morfologicky intermedi\u00E1rn\u00ED a odpov\u00EDdaj\u00ED experiment\u00E1ln\u011B z\u00EDskan\u00FDm hybrid\u016Fm stejn\u00E9 rodi\u010Dovsk\u00E9 kombinace. Tvo\u0159\u00ED zna\u010Dn\u00E9 mno\u017Estv\u00ED velikostn\u011B homogenn\u00EDho pylu (standartn\u00ED odchylka a varia\u010Dn\u00ED koeficient jsou ni\u017E\u0161\u00ED ne\u017E horn\u00ED limit pro diploidy \u2013 3\u03BCm resp. 7.5%), a mohou proto pravd\u011Bpodobn\u011B vystupovat jako zdroj pylu v dal\u0161\u00EDch k\u0159\u00ED\u017Een\u00EDch; na druhou stranu ale netvo\u0159\u00ED \u017E\u00E1dn\u00E1 semena (sami\u010D\u00ED sterili..."@cs . . . . "Asteraceae; chromosome numbers; homoploid hybridization"@en . "477639" . . . . "P(GA206/03/1217), Z(AV0Z60050516)" . "Hieracium xgrofae - znovuobjeven\u00FD diploidn\u00ED hybrid z Ukrajinsk\u00FDch Karpat"@cs . . "3"^^ . .