Illustration of and a key to the genus Triticum L. in Iran

摘要

The genus Triticum in Iran is illustrated and revised taxonomically. A total of 24 herbarium specimens and 245 accessions collected from the field were examined morphologically. The taxonomic literature of Triticum in Iran is reviewed and discussed. In total, nine Triticum species including three diploid species (T. urartu Thum. ex Gandil., Triticum monococcum L. and T. boeoticum Boiss.), four tetraploid species (T. dicoccum Schrank. ex Schubl., T. dicoccoides (Korn ex Aschers. et Graebn.) Thell, T.turgidum L. and T. durum Desf.) and two hexaploid species (T. aestivum L. and T. compactum Host.) were identified. Root tip mitosis was observed and chromosome counts made on all accessions collected from the field. A biometrical evaluation was performedon 160 morphological characters. A taxonomic brief key to the genus Triticum in Iran is presented along with a line drawing of each species. The geographical distribution of the species in Iran is summarized on a map. Two new species, T. urartu (2n=14)and T. compactum (2n=42), are reported for the first time for the flora of Iran.