Natural hybridization in tropical spikerushes of Eleocharis subgenus Limnochloa (Cyperaceae): Evidence from morphology and DNA markers

0435129 - BC 2015 RIV US eng J - Journal Article
Košnar, J. - Košnar, Ji. - Macek, Petr - Herbstová, Miroslava - Rejmánková, E. - Stech, M.
Natural hybridization in tropical spikerushes of Eleocharis subgenus Limnochloa (Cyperaceae): Evidence from morphology and DNA markers.
American Journal of Botany. Roč. 97, č. 7 (2010), s. 1229-1240. ISSN 0002-9122. E-ISSN 1537-2197
Institutional research plan: CEZ:AV0Z60050516; CEZ:AV0Z50510513
Keywords : Belize * Cyperaceae * DNA markers * hybridization
Subject RIV: EB - Genetics ; Molecular Biology; EB - Genetics ; Molecular Biology (BU-J)
Impact factor: 3.052, year: 2010

Premise of the study: Natural hybridization represents an important force driving plant evolution and affecting community structure and functioning. Hybridization may be overlooked, however, among morphologically highly uniform congeners. An excellent example of such a group is Eleocharis subgenus Limnochloa, which has no reliably proven hybrids. Does this reflect biological barriers to interspecific crosses or difficulties in detecting the hybrids? We tested the hypothesis that hybridization occurs among sympatric Eleocharis cellulosa, E. interstincta, and E. mutata in northern Belize, Central America. Methods: Morphometric study (407 plants) was followed by examination of inter-simple sequence repeat (ISSR) polymorphisms (44 plants) and ITS sequence variation (33 plants).Key results: Two putatively hybrid morphotypes were discerned-E. cellulosa-resembling and E. interstincta-resembling.
Permanent Link: http://hdl.handle.net/11104/0239080