University of Isfahan Taxonomy and Biosystematics 3115-9001 9 31 2017 08 23 Palynological Study of Tribe Anthemideae (Asteraceae) in Iran مطالعۀ گرده‌شناسی قبیلۀ بابونه (Asteraceae, Anthemideae) در ایران 29 42 22632 10.22108/tbj.2018.105528.1032 EN Nayyereh Olanj Assistant Professor Department of Biology, Faculty of Basic Science, Malayer University, Malayer, Iran Ali Sonboli Assistant Professor Department of Biology, Medicinal Plants & Drugs Research Institute, Shahid Beheshti University, Tehran, Iran Seyedeh Bahereh Javadi M. S. & Researcher, Department of Botany, Iranian Research Institute of Plant Protection, Tehran, Iran Journal Article 2017 07 25 The pollen grains of 32 populations from 13 genera belonging to the tribe Anthemideae-Asteraceae (one to three populations of each species) from Iran were studied by light and scanning electron microscopes. Pollen grains of all the studied samples were tricolporate. Based on pollen shape, 55, 22, 15 and 8 % were oblate-spheroidal, suboblate, spheroidal and prolate-spheroidal, respectively. The pollen grains with oblate-spheroidal and spheroidal shapes were common among the genera studied. The pollen grains of all taxa were operculate and tricolporate. The pollen ornamentations were echinate perforate except <em>Artemisia</em> that was spinulose non-perforate in SEM. The dendrogram obtained from UPGMA method based on four quantitative and qualitative characters was classified into two main clusters. The first cluster (A) includes populations of <em>Artemisia</em> which show "<em>Artemisia</em>-type" pollen, while the second cluster (B) comprises of the rest of the taxa which have pollen grains of "Anthemis- type". The subcluster B-1 possesses samples with bigger (polar axis 28.64–32.5 µm and equatorial axis 30.65–33.2 µm) pollen grains and subcluster B-2 comprised of populations with smaller (polar axis 21.69-30.38 µm and equatorial axis 23.29–32.4 µm) pollen grains. The results showed that pollen micromorphological characters could be utilized in interpretation of intergeneric relationship of tribe Anthemideae. Moreover, pollen size and shape were determined as taxonomic diagnostic characteristics. https://tbj.ui.ac.ir/article_22632_9c205d9aa39320436c266974a5ce5a9b.pdf