05 مهر 1400
نيره اولنج

نیره اولنج

مرتبه علمی: استادیار
نشانی:
تحصیلات: دکترای تخصصی / زیست شناسی-سیستماتیک گیاهی
تلفن:
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان
Ajania semnanensis sp. nov. (Asteraceae – Anthemideae), from northeast Iran: insights from karyological and micromorphological data
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Ajania. Karyology. micromorphology
سال
2013
مجله Nordic journal of botany
پژوهشگران نیره اولنج

چکیده

Ajania semnanensis (Compositae: Anthemideae), a new species of Ajania from northeast of Iran, Semnan province, is described and illustrated. Ajania semnanensis is a suff ruticose perennial growing on rocky and stony slopes of mountains at altitudes of 1500 – 2800 m a.s.l. Karyological and micromorphological data of the pollen and achenes, as well as a distribution map for the species are provided. Th e cytotype of the species was found to be diploid (2n  2x  18) based on x  9. Th e karyotype formula is 2n  2x  4M  6m  6sm  2st. Pollen grains of A. semnanensis are prolate-spheroidal (P/E  1.1), 3-zonocolporate and echinate ( Anthemis type). Th e achenes of A. semnanensis are obovate, 1.0– 1.5  0.5– 0.6 mm, light brown, with 4 – 6 fi ne and inconspicuous ribs, glabrous, without pappus and with a subbasal carpopodium. Th e IUCN status of the new species is suggested to be ‘ Least Concern ’ (LC).