Počet záznamů: 1
The elusive Juncus minutulus: a failure to separate tetra- and hexaploid individuals of the Juncus bufonius complex in a morphometric comparison of cytometrically defined groups
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SYSNO ASEP 0370285 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The elusive Juncus minutulus: a failure to separate tetra- and hexaploid individuals of the Juncus bufonius complex in a morphometric comparison of cytometrically defined groups Tvůrce(i) Rooks, Frederick (BU-J)
Jarolímová, Vlasta (BU-J)
Záveská Drábková, Lenka (BU-J) RID
Kirschner, Jan (BU-J) RID, ORCID, SAICelkový počet autorů 4 Zdroj.dok. Preslia. - : Česká botanická společnost - ISSN 0032-7786
Roč. 83, č. 4 (2011), s. 565-589Poč.str. 25 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova Juncus bufonius ; cytotypes ; discriminant analysis Vědní obor RIV EF - Botanika CEP GP206/07/P147 GA ČR - Grantová agentura ČR CEZ AV0Z60050516 - BU-J (2005-2011) UT WOS 000297230600004 Anotace Screening of nuclear genome size revealed, besides the diploid level corresponding to known diploid species, two polyploid cytotypes conforming with the 4x and 6x levels treated by some authors as Juncus minutulus and J. bufonius s. str. The relationship between nuclear DNA content and the number of chromosomes was verified by chromosome counting. The 2C values of diploid, tetraploid and hexaploid individuals were ca 0.65, 1.18±2.8% and 1.84±1.6% pg 2C DNA, respectively. Classificatory discriminant analysis using characters selected by canonical discriminant analysis and stepwise variable selection resulted in a validation error rate of 0.45 after cross-validation. This provides independent support for the opinion of some previous authors that J. bufonius L. is best treated as a single variable species comprising two cytotypes that are inseparable using hitherto suggested diagnostic characters. 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 2012
Počet záznamů: 1