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Journal of the Forestry (Šumarski list), Vol. 142 No. 5-6, 2018.

Original scientific paper

https://doi.org/10.31298/sl.142.5-6.5

Resolving the taxonomic status of the mysterious „Green Oak“ (Quercus× viridis Trinajstić) from Croatia based on phylogenetic analysis

Martina Temunović orcid id orcid.org/0000-0002-5202-7243 ; Sveučilište u Zagrebu – Šumarski fakultet, Zavod za šumarsku genetiku, dendrologiju i botaniku
Jozo Franjić ; Sveučilište u Zagrebu – Šumarski fakultet, Zavod za šumarsku genetiku, dendrologiju i botaniku
Federico Vessella ; Dipartimento di Scienze Agrarie e Forestali (DAFNE), Universita` della Tuscia, Viterbo, Italy
Marco C. Simeone orcid id orcid.org/0000-0003-3798-9580 ; Dipartimento di Scienze Agrarie e Forestali (DAFNE), Universita` della Tuscia, Viterbo, Italy

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Abstract

The “green oak” is a well-known specific individual oak tree of unknown origin growing near Zadar in Croatia. Depending on the authors, it was described either as a hybrid taxon between Quercus cerris L. and Q. ilex L. (named Q. × viridis Trinajstić) or alternatively as a presumed hybrid between Q. cerris and Q. suber L. To finally resolve the origin of this taxon, we performed molecular analyses and investigated the phylogenetic relationships between the “green oak” and other closely related oak taxa from the surrounding area, including all putative parental species. A total of 16 individuals representing nine Quercus L. taxa were investigated based on both plastid (trnK-matK and trnH-psbA) and nuclear (5.8S + ITS2) DNA sequence variation. Placement of the green oak in the phylogenetic relationships between the studied oak taxa does not support Q. ilex as one of its parental species but rather indicates that this taxon is in fact Q. crenata Lam., reaffirming previous alternative hypothesis that the green oak is a hybrid between Q. cerris and Q. suber. We therefore confirm the presence of Q. crenata in the Croatian flora and based on historical literature survey, we explore and discuss the implication of its occurrence and possible hybridogenic origin in the Croatian territory.

Keywords

Green oak; <i>Quercus × viridis; Quercus crenata</i>; hybrids; phylogeny; taxonomy

Hrčak ID:

202342

URI

https://hrcak.srce.hr/202342

Publication date:

30.6.2018.

Article data in other languages: croatian

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