tailieunhanh - Seed structure of some taxa of the genus Crocus L. (Iridaceae) series Crocus

In this study, the macro- and micromorphological seed characteristics of the genus Crocus L. series Crocus taxa, including C. pallasii, C. turcicus, C. dispathaceus, C. asumaniae, C. mathewii, C. thomasii, C. oreocreticus, and C. cartwrightianus. | Turkish Journal of Botany Turk J Bot (2018) 42: 722-731 © TÜBİTAK doi: Research Article Seed structure of some taxa of the genus Crocus L. (Iridaceae) series Crocus 1, 2 1 1 Mehmet Cengiz KARAİSMAİLOĞLU * , Levent ŞIK , Almıla ÇİFTÇİ , Osman EROL Division of Botany, Department of Biology, Faculty of Science, İstanbul University, İstanbul, Turkey 2 Department of Biology, Faculty of Arts and Sciences, Celal Bayar University, Manisa, Turkey 1 Received: Accepted/Published Online: Final Version: Abstract: In this study, the macro- and micromorphological seed characteristics of the genus Crocus L. series Crocus taxa, including C. pallasii, C. turcicus, C. dispathaceus, C. asumaniae, C. mathewii, C. thomasii, C. oreocreticus, and C. cartwrightianus, were observed. Morphological characteristics, such as the size, shape, color, and seed surface structures, were analyzed using stereo and scanning electron microscopes. Testa layer structures including the outer and inner testae, phytomelan layer structure and thickness, and seed endosperm cell features were studied. Differences in the seed, raphe size, seed surface patterns, inner testa features, and phytomelan layer thickness were observed at an interspecific level. The results revealed differences in the seed morphology and anatomy with a few exceptions. Key words: Crocus, seed, morphology, anatomy, scanning electron microscopy, phytomelan layer 1. Introduction Crocus L. (Iridaceae) comprises 235 taxa (Petersen et al., 2008; Kerndorff and Pasche, 2011; Peruzzi and Carta, 2011; Carta et al., 2015; Ruksans, 2017), and is distributed from West Europe and Northwest Africa to West China, with the center of species diversity in the Balkan Peninsula and Turkey. Turkey is the richest country with 137 Crocus taxa (Harpke et al., 2012; Ruksans, 2017). Different conventional morphological features used in Crocus taxonomy with .