Lophiolepis (=Cirsium Epitrachys seksiyonu) cinsine ait Türkiye’den yeni bir melez kaydı (Asteraceae, Carduinae)

Öz

Lophiolepis Cass., Asteraceae familyasının Cardueae tribusu (alttribus Carduinae)’nda yer alan ve son yapılan moleküler çalışmaların ışığı altında Cirsium Miller cinsinden ayrılan bir cinstir. Cins, belirli koşullar altında türler ve alt türler arasında yüksek oranda hibrit oluşturma potansiyeline sahiptir. Bu çalışmada, önceleri Petrak tarafından 1914 yılında Cirsium x trifurcum Petrak olarak tanımlanan, Lophiolepis x trifurca (Petr.) Bureš, Del Guacchio, Iamonico & P.Caputo adlı bir melez Türkiye Florası için ilk defa rapor edilmektedir. Hibrit örnekler atasal taksonlar olan; Lophiolepis kosmelii (Adams) Bureš, Del Guacchio, Iamonico & P.Caputo ve L. caucasica (Adams) Bureš, Del Guacchio, Iamonico & P.Caputo ile araform özellikler sergilemektedir. Bitki örnekleri Artvin ili Şavşat ilçesinden atasal taksonların da mevcut olduğu simpatrik populasyonlardan toplanmıştır. Bu örnekler dikkatlice incelenmiş ve muhtemel atasal taksonlar ile karşılaştırılmış olup atasal taksonlarla beraber hibrit bitkilerin morfolojik özelliklerinin ölçümleri gerçekleştirilmiştir. Örneklerin doğal görünümleri fotoğraflanmış, gövde yaprakları stereomikroskop kullanılarak çizilmiş olup yaprak mikromorfolojik özellikleri tanımlanmış ve anatomik özellikleri atasal taksonlar ile detaylı olarak karşılaştırılmıştır. Sonuç olarak, L. x trifurca ile atasal taksonlar arasında gövde yaprakları, fillariler, kapitulum ve korolla açısından araform morfolojik özellikler tespit edilmiştir. Takson, yaprak üst yüzeylerinde sık dikenler, alt yüzeylerinde ise tek sıra çok hücreli keçe tüyler içermektedir. Kütikula, alt yüzeylerde stoma/tüy tabanı yakınlarında çizgili görünümünde olup, üst yüzeylerde ise pul/granüller görülmektedir. Bu taksonun yaprakları atasal taksonlarda olduğu gibi amfistomatik olup dorsiventral mezofillidir.

Anahtar Kelimeler

• Asteraceae
• Cirsium
• Epitrachys
• Hibrit
• Lophiolepis x trifurca
• Cardueae
• Türkiye

A new hybrid record of the genus Lophiolepis (=Cirsium sect. Epitrachys) (Asteraceae, Carduinae) from Türkiye

Öz

Lophiolepis Cass., belonging to the tribe Cardueae of the family Asteraceae (subtribe Carduinae) is newly separated from the genus Cirsium Miller in the light of recent molecular studies. It has a high affinity to form interspecific and intersubspecific hybrids under certain circumstances. In the present study, one hybrid combination, Lophiolepis x trifurca (Petr.) Bureš, Del Guacchio, Iamonico &P. Caputo which was previously described as Cirsium x trifurcum Petrak by Petrak in 1914 is newly recorded for Turkish Flora. The hybrid specimens have intermediate characters with parental species; Lophiolepis kosmelii (Adams) Bureš, Del Guacchio, Iamonico & P. Caputo and L. caucasica (Adams) Bureš, Del Guacchio, Iamonico & P. Caputo. Plant samples including parental species were collected from Şavşat district of Artvin province in sympatric populations. These specimens were carefully examined and compared with the putative parents, and morphological character measurements of hybrid plants, as well as parental species were carried out. The samples’ natural habits were photographed, cauline leaf drawings were supplied using a stereomicroscope, leaf micromorphological characters were determined and anatomical characteristics were compared with parents, in detail. In conclusion, intermediate morphological characteristics between L. x trifurca and its parents were determined in terms of features such as cauline leaves, phyllaries, capitula and corolla. It has spines on adaxial sides, and uniseriate multicellular tomentose trichomes in abaxial ones. Cuticle has striate appearance near to the stomata/ trichome bases in the abaxial surface and scale/granules are shown in adaxial parts. This taxon has amphistomatic leaves and dorsiventral mesophyll as in the parental species.

Anahtar Kelimeler

• Asteraceae
• Cirsium
• Epitrachys
• Hybrid
• Lophiolepis x trifurca
• Cardueae
• Türkiye

Teşekkür

The author thanks to the Research Foundation of Artvin Coruh University for financial support (Project number: 2016.F10.02.08), and to Prof. Dr. Petr Bureš from Masaryk University, for supplying some adjacent flora books.

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