A new Onosma (Boraginaceae) species from Central Anatolia, Turkey

Koyuncu, Onur; Özgi̇şi, Kurtuluş; Sezer, Okan; Öztürk, Derviş

doi:10.1007/s00606-013-0839-1

Cited by 17 publications

(9 citation statements)

References 17 publications

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“…150 species distributed throughout Anatolia, the Near East and the Mediterranean. Several studies have been conducted on morphological and anatomical features of selected species of Onosma (Qureshi & Qaiser 1987, Maggi et al 2008, Akçin 2009, Binzet & Akçin 2009, Binzet et al 2010, Akçin et al 2013, Koyuncu et al 2013), but few attempts have been made to study the evolutionary history and diversification of the genus, although Teppner gathered karylogical data on the genus (e.g. Teppner 1971Teppner , 1980Teppner , 1991aTeppner , 1991b, and Kolarčik et al (2010b, Cecchi et al (2011) and Mehrabian et al (2011) conducted molecular studies.…”

Section: Introductionmentioning

confidence: 98%

Patterns of pollen stainability in polyploids of the genus Onosma (Boraginaceae)

Kolarčik¹,

Ducár²,

Kačmárová³

et al. 2015

Plecevo

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Background and aims -The genus Onosma (Boraginaceae) is a taxonomically and phylogenetically very complex plant group, with several taxa of hybrid or polyploid origin. An extensive pollen viability survey within the genus could help to solve some evolutionary or taxonomic incertainties within the genus, but it has never been performed. The aim of the present study is to determine the degree of pollen viability of selected species of various ploidy levels and to investigate if microevolutionary processes, such as polyploidization and hybridization, are associated with variation in pollen viability. Methods -Pollen staining with lactophenol blue was chosen as an indirect method for determining pollen viability. Ploidy level information was obtained from an extensive literature search. In mixed populations, the ploidy level of individuals was determined based on flow cytometry screening. Key results -Considerable variation in pollen stainability is present among taxa of Onosma. Pollen stainability is high in most diploids (72-98% in mean), allotetraploids (90%) and allohexaploids (97%), but lower in autotetraploids (71%) and allotriploids (2-49%). At the population level, considerable variation in pollen stainability was found in the allotriploid O. arenaria (14-83%), while the taxonomically related allotetraploid O. pseudoarenaria is less variable (71-99%). Conclusion -This study shows the value of the staining method in the study of the genus Onosma. Low pollen stainability appears to be associated with autopolyploidization as well as recent hybridization processes suggesting the presence of microsporogenesis or microgametogenesis abnormalities. In contrast, pollen stainability is high in stabilized allopolyploids indicating proper meiosis with maintenance of homologous pairing of parental chromosomes and correct pollen development.

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Section: Introductionmentioning

confidence: 98%

Patterns of pollen stainability in polyploids of the genus Onosma (Boraginaceae)

Kolarčik¹,

Ducár²,

Kačmárová³

et al. 2015

Plecevo

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“…The area is very rich in local endemic plants (Akman et al 2011; Koçyiğit and Bona 2013). Recently many articles were published on new species from this particular region, notably Ferula mervynii M. Sağıroğlu & H. Duman (Sağıroğlu and Duman 2007), Silene dumanii Kandemir, G. Ecevit Genç & İ. Genç (Kandemir and Genç 2009), Jurinea tortumensis A. Duran & B. Dogan (Dogan et al 2010), Campanula hacerae A. İlçim (İlçim et al 2011), Silene gevasica Hamzaoğlu (Hamzaoğlu et al 2011), Allium shirnakiense L. Behçet & Rüstemoğlu (Behçet and Rüstemoğlu 2012), Rhabdosciadium urusakii E. Akalın (Akalın and Akpulat 2012), Onosma atila-ocakii O Koyuncu & Yaylacı (Koyuncu et al 2013) and Crocus yakarianus Yıldırım & O. Erol (Yıldırım and Erol 2013). …”

Section: Taxonomic Treatmentmentioning

confidence: 99%

Psephellus vanensis (Asteraceae), a new species from east Turkey

Dogan¹,

Behçet²,

Duran³

et al. 2015

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A new species, Psephellus vanensis A.Duran, Behçet & B.Dogan (Asteraceae) from Anatolia, Turkey, is described and illustrated. The species grows on the serpentine stony field of the village of Çaldıran in the district of Başkale (Van province) in eastern Anatolia. It is morphologically similar to Psephellus pyrrhoblepharus (Boiss.) Wagenitz. Diagnostic characters are discussed, and a key to the most similar species is provided. Ecology, conservation status and notes on biogeography of the species are also presented. In addition, the geographical distribution of the new species and other related species in Turkey is mapped.

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“…Riedl (1978) has reported 88 species of Turkish flora. Currently, 10 new species have been recognised by different authors (Davis et al 1988Güner 2000, Yıldırımlı 2000, Riedl et al 2005, Binzet and Orcan 2007, Kandemir and Türkmen 2010, Aytaç and Türkmen 2011, Koyuncu et al 2013. Approximately half of the species are endemic to the Flora of Turkey.…”

Section: Introductionmentioning

confidence: 99%

Onosma demirizii (Boraginaceae), a new species from central Anatolia, Turkey

2018

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Onosma demirizii Kaynak, Tarımcılar & Yılmaz sp. nova (Boraginaceae) is described as a new species from central Anatolia, Turkey. This new species is closely related to O. subulifolium H. Riedl but differs by its yellowish-green stems, patent-setose indumentum, linear to narrowly oblanceolate cauline leaves, shorther calyx and corolla and anthers that are longer than the filaments. The diagnostic morphological characters of this new species are discussed.

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A new Onosma (Boraginaceae) species from Central Anatolia, Turkey

Cited by 17 publications

References 17 publications

Patterns of pollen stainability in polyploids of the genus Onosma (Boraginaceae)

Patterns of pollen stainability in polyploids of the genus Onosma (Boraginaceae)

Psephellus vanensis (Asteraceae), a new species from east Turkey

Onosma demirizii (Boraginaceae), a new species from central Anatolia, Turkey

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