caa a22 4500 477038816 CHVBK 20180405111312.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF00984933 doi (NATIONALLICENCE)springer-10.1007/BF00984933 Karyological studies on Gentiana sect. Chondrophyllae ( Gentianaceae ) from China [Elektronische Daten] [Philippe Küpfer, Yong-Ming Yuan] Nineteen populations of fifteen species ofGentiana sect.Chondrophyllae from China were observed cytologically.Gentiana alsinoides, G. anisostemon, G. asterocalyx, G. exigua, G. heterostemon, G. intricata, G. praticola, G. pseudoaquatica, G. spathulifolia, andG. subintricata all had the same chromosome number of 2n = 20 (or n = 10), whereasG. piasezkii had 2n = 36,G. squarrosa 2n = 38,G. prattii 2n = 18,G. aristata 2n = 14 (n = 7), andG. heleonastes 2n = 12. All these chromosome numbers are documented here for the first time, except forG. squarrosa, where it is a new number report. The basic numbers of x = 6, x = 7 and x = 19 are new for the section. Karyotype analyses of some species revealed that, except for a few cases, the species examined mainly had metacentric chromosomes. 2n = 20 = 2m(SAT) + 18m was found to be the main type of karyotype for the species with 2n = 20. Chromosomal evolution and its mechanism in this section are also discussed. Springer-Verlag, 1996 Gentianaceae nationallicence Gentiana nationallicence sect. Chondrophyllae nationallicence Karyosystematics nationallicence cytogeography nationallicence chromosome numbers nationallicence karyotype nationallicence chromosome evolution nationallicence Küpfer Philippe Laboratoire de Phanerogamie, Institut de Botanique, Chantemerle 22, case postale 2, CH-2007, Neuchâtel, Switzerland aut Yuan Yong-Ming Laboratoire de Phanerogamie, Institut de Botanique, Chantemerle 22, case postale 2, CH-2007, Neuchâtel, Switzerland aut Plant Systematics and Evolution Springer-Verlag 200/3-4(1996-09-01), 161-176 0378-2697 200:3-4<161 1996 200 606 https://doi.org/10.1007/BF00984933 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00984933 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Küpfer Philippe Laboratoire de Phanerogamie, Institut de Botanique, Chantemerle 22, case postale 2, CH-2007, Neuchâtel, Switzerland aut NATIONALLICENCE 700 1- Yuan Yong-Ming Laboratoire de Phanerogamie, Institut de Botanique, Chantemerle 22, case postale 2, CH-2007, Neuchâtel, Switzerland aut NATIONALLICENCE 773 0- Plant Systematics and Evolution Springer-Verlag 200/3-4(1996-09-01), 161-176 0378-2697 200:3-4<161 1996 200 606 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer