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- MakaleYalnız künye2019Scopus SJRQ2Pollen morphology of three Chrysophthalmum schultz bip. (Asteraceae) species in Turkey
Karlıoǧlu Kılıç, Nurgül; Paksoy, Mehmet Yavuz; Özdemir, Emrah
The pollen morphology of three species of the genus Chrysophthalmum Schultz Bip. (Asteraceae) found in Turkey were studied with light microscope (LM) and scanning electron microscope (SEM). The three species were C. dichotomum Boiss. & Heldr., C. gueneri Aytac & Anderb., and C. montanum (DC.) Boiss. Pollen grains of the Chrysophthalmum species were identified as spheroidal and their apertures were shown to be tricolporate. The polar and equatorial axes, distance between colpus apices, length/width of colpus, length/width of porus, exine thickness, and length/base of spine were measured on the pollen grains. Pollen ornamentation of the three species was identified as echinate in LM and echinate-microperforate in SEM. These studied species were distinguished from each other using Kruskal–Wallis and Dunn’s test. The results indicate that pollen characteristics could be useful for distinguishing the examined species.
AtıfWoS1OpenAlex1
İncele - MakaleAçık Erişim2018Scopus SJRQ3Morphological, anatomical and cytological investigations on three taxa of Centaurea L. (Asteraceae) from Turkey
Tasar, Neslihan; Doğan, Gülden; Kiran, Yaşar; Oliur Rahman, M.; Çakilcioğlu, Uğur
Morphological, anatomical and cytological features of three Turkish taxa of Centaurea L., viz. C. polypodiifolia Boiss. var. polypodiifolia, C. urvillei DC. subsp. urvillei and C. urvillei subsp. armata Wagenitz were investigated. Stem anatomy revealed the presence of a thick cuticle layer outside the stem, and epidermis with dense hairs was observed in the lower part. Investigation on leaf anatomy showed that different types of hairs on the outside of the leaf were very intense. Palisade parenchyma was observed below the upper and lower epidermis. In Centaurea polypodiifolia var. polypodiifolia, chromosome number was found to be 2n=16, while in C. urvillei subsp. urvillei and C. urvillei subsp. armata 2n=20. Total karyotype length of C. polypodiifolia var. polypodiifolia, C. urvillei subsp. urvillei and C. urvillei subsp. armata was 22.9 μm, 37.84 μm and 40.01 μm, respectively. Among the investigated taxa the karyotype asymmetry index was found lowest in C. urvillei subsp. armata. Satellite was detected in C. urvillei subsp. urvillei and subsp. armata, while it was absent in C. polypodiifolia Boiss. var. polypodiifolia.
AtıfScopus15WoS17OpenAlex9İncele - MakaleAçık Erişim2018Scopus SJRQ3Karyological investigation on seven centaurea L. (Asteraceae) Taxa from Turkey
Tasar, Neslihan; Dogan, Gulden; Kiran, Yasar
The somatic chromosome numbers and karyotypes were examined in seven species of genus Centaurea L. distributed in Turkey. The chromosome numbers were determined as 2n=2x=16 in C. behen L. and C. solstitialis L.; 2n=2x=18 in C. cynarocephala Wagenitz and C. agregata Fisch. & Mey. ex DC. ssp. agregata; 2n=2x=20 in C. iberica Trev. ex Sprengel; 2n=2x=26 in C. balsamita Lam.; 2n=4x=36 in C. virgata Lam. All of the chromosomes had centromeres at median point (M), median region (m), and submedian region (sm). Satellite chromosomes (sat-chromosomes) were observed only in C. virgata. The findings for each of the analyzed taxa are compared each other and with the results of previous studies.
AtıfScopus5WoS3OpenAlex1İncele - MakaleAçık Erişim2014Scopus SJRQ2Gundelia dersim and Gundelia munzuriensis (Compositae), two new species from Turkey
Vitek, Ernst; Yüce, Ebru; Ergin, Cemil
Two new species of Gundelia (Compositae) are described from Turkey, G. dersim Vitek, Yuce & Ergin sp. nov. and G. munzuriensis Vitek, Yuce & Ergin sp. nov.
AtıfWoS12OpenAlex14İncele