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@article{837750,
author = {Krahulcová, Anna and Rotreklová, Olga and Krahulec, František and Rosenbaumová, Radka and Plačková, Ivana},
article_location = {Pruhonice},
article_number = {3},
keywords = {Facultative apomixis; Genome instability; Haploid parthenogenesis; Hybrid swarms; Residual sexuality; Unreduced gametes},
language = {eng},
issn = {1211-9520},
journal = {Folia Geobotanica},
title = {Enrichning ploidy level diversity: the role of apomictic and sexual biotypes of Hieracium subgen. Pilosella (Asteraceae) that coexist in polyploid populations},
volume = {44},
year = {2009}
}
TY - JOUR
ID - 837750
AU - Krahulcová, Anna - Rotreklová, Olga - Krahulec, František - Rosenbaumová, Radka - Plačková, Ivana
PY - 2009
TI - Enrichning ploidy level diversity: the role of apomictic and sexual biotypes of Hieracium subgen. Pilosella (Asteraceae) that coexist in polyploid populations
JF - Folia Geobotanica
VL - 44
IS - 3
SP - 281-306
EP - 281-306
PB - Institute of Botany
SN - 12119520
KW - Facultative apomixis
KW - Genome instability
KW - Haploid parthenogenesis
KW - Hybrid swarms
KW - Residual sexuality
KW - Unreduced gametes
N2 - The capacity to generate variation in ploidy and reproductive mode was compared in facultatively apomictic versus sexual maternal plants that coexist in two model populations. The population structure was studied in polyploid hybrid swarms comprised of Hieracium pilosella (usually sexual, less commonly apomictic), H. bauhini (apomictic), and their hybrids (sexual, apomictic, or sterile). In both populations, the progeny of sexual mothers mainly retained a rather narrow range of ploidy level/chromosome number, while the progeny of facultatively apomictic mothers was more variable. The high-polyploid hybrids, which had arisen from the fertilization of unreduced egg cells of apomicts, mainly produced aberrant non-maternal progeny. While the progeny produced by both true apomictic and sexual mothers mostly maintained the maternal reproductive mode, the progeny of those versatile mothers was mainly sexual. Herein, we argue that polyploid facultative apomicts can considerably increase population diversity.
ER -
KRAHULCOVÁ, Anna, Olga ROTREKLOVÁ, František KRAHULEC, Radka ROSENBAUMOVÁ a Ivana PLAČKOVÁ. Enrichning ploidy level diversity: the role of apomictic and sexual biotypes of Hieracium subgen. Pilosella (Asteraceae) that coexist in polyploid populations. \textit{Folia Geobotanica}. Pruhonice: Institute of Botany, 2009, roč.~44, č.~3, s.~281-306. ISSN~1211-9520.
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