TY - JOUR T1 - Picris L. (Asteraceae) Cinsine Ait Beş Türün Polen Morfolojisi TT - Pollen Morphology of Five Species of Picris L. (Asteraceae) AU - Akyalçın, Hanife AU - Uçan, Kadir PY - 2023 DA - December Y2 - 2023 DO - 10.21597/jist.1313355 JF - Journal of the Institute of Science and Technology JO - J. Inst. Sci. and Tech. PB - Iğdır Üniversitesi WT - DergiPark SN - 2536-4618 SP - 2437 EP - 2449 VL - 13 IS - 4 LA - tr AB - Türkiye’deki Picris L. cinsinin polen morfolojisi ile ilgili ayrıntılı ilk araştırma bu çalışmada gerçekleştirilmiştir. Işık (LM) ve elektron mikroskobu (SEM) ile Picris L. cinsine ait 5 tür çalışılmıştır. Cinsin polen morfolojisi ışık mikroskobu incelemelerinde radyal simetrili, monad ve izopolardır. Polenler prolat sferoidal şeklinde olup amb interhegzagonal-subtriangulardır. Ornamentasyon ekinulofattır. Elektron mikroskobu mikrograflarında yapılan incelemelerde ornamentasyon ekinulofat-perforat, Picris cyprica Lack.ve Picris strigosa Bieb. türlerinde paraboral lakunalarda tektum yüzey ornamentasyonu retikülat, iki farklı lokaliteden toplanan Picris altissima Delile. türleri ve Picris kotschyi Boiss. polenlerinde ise paraboral lakunalardaki tektum yüzey ornamentasyonu mikroperforat olarak gözlenmiştir. Abporal lakunalarda tectum yüzeyinde gözlenen ornamentasyon tüm polenlerde psilattır. Polenlerde spinül boyları, spinül taban genişliklerinden daha uzundur. Spinüllerin uçları obtus-akut olarak sonlanmaktadır. Polenler 3 poral, 6 abporal, 6 paraboral olmak üzere 15 lakunaya sahiptir. Polenlerin elektron mikrograflarında polar bölgelerinde çökme olduğu bariz olarak gözlenmiştir. KW - Asteraceae KW - Picris L KW - Polen morfolojisi KW - Türkiye N2 - The first detailed research on the pollen morphology of the Picris L. genus in Turkey was carried out in this study. Light (LM) and electron microscopy (SEM) studied five species of the genus Picris L. The pollen morphology of the genus is radial symmetrical, monad and isopolar in light microscopy examinations. Pollens are in prolate sferoidal shape, and amb is inter-hexagonal-subtriangular. Ornamentation is echinulophate. In the examinations made in electron microscope micrographs, ornamentation is echinulophate-microperforate, and tectum surface ornamentation is reticulate in paraboral lacunae in Picris cyprica Lack. and Picris strigosa Bieb. species. In the pollen of Picris altissima Delile. species and Picris kotschyi Boiss. collected from two different localities, the tectum surface ornamentation in the paraboral lacunae was observed as microperforate. The ornamentation observed on the tectum surface in abporal lacunae is psilate in all pollens. Spinule lengths in pollen are longer than spinule base widths. The ends of the spines terminate obtus-acutely. 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