Počet záznamů: 1
The detection, rate and manifestation of residual sexuality in apomictic populations of Pilosella (Asteraceae, Lactuceae)
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SYSNO ASEP 0430238 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The detection, rate and manifestation of residual sexuality in apomictic populations of Pilosella (Asteraceae, Lactuceae) Tvůrce(i) Krahulcová, Anna (BU-J) RID, ORCID
Rotreklová, O. (CZ)
Krahulec, František (BU-J) RID, ORCIDCelkový počet autorů 3 Zdroj.dok. Folia Geobotanica. - : Springer - ISSN 1211-9520
Roč. 49, č. 2 (2014), s. 239-258Poč.str. 20 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova facultative apomixis ; haploid parthenogenesis ; interspecific hybridization ; Pilosella ; residual sexuality Vědní obor RIV EF - Botanika CEP GAP506/10/1363 GA ČR - Grantová agentura ČR Institucionální podpora BU-J - RVO:67985939 UT WOS 000338233200008 DOI 10.1007/s12224-013-9166-0 Anotace The effect of maternal, facultatively apomictic plants on population diversity was evaluated in seven hybridizing polypoid populations, where apomictic (P. aurantiaca or P. bauhini) and sexual (P. officinarum) biotypes coexist. Due to residual sexuality, the progeny different from their maternal parents (0.6-92.3% of embryos and 0-100% of seedlings) originated either sexually or via haploid parthenogenesis. The facultatively apomictic mothers generated the progeny more variable in ploidy level than was the progeny derived from sexual mothers. Residual sexuality in apomicts was also effective in experimental crosses. The 2n+n hybrids produced from an apomictic and a sexual parent (both in the field and in experiments), displayed similar reproductive behaviour, producing polyhaploid, sexual and apomictic progeny in variable ratios. The variation recorded in these populations suggests introgressive hybridization towards the sexual species. Pracoviště Botanický ústav Kontakt Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Rok sběru 2015
Počet záznamů: 1