Biological aspects of threatened Psephellus erivanensis (Asteraceae) in the context of ex-situ conservation
- سال انتشار: 1402
- محل انتشار: مجله گیاه شناسی ایران، دوره: 29، شماره: 2
- کد COI اختصاصی: JR_IJB-29-2_006
- زبان مقاله: انگلیسی
- تعداد مشاهده: 55
نویسندگان
A. Takhtajan Institute of Botany of the National Academy of Sciences of the Republic Armenia, Yerevan, Republic of Armenia
A. Takhtajan Institute of Botany of the National Academy of Sciences of the Republic Armenia, Yerevan, Republic of Armenia
A. Takhtajan Institute of Botany of the National Academy of Sciences of the Republic Armenia, Yerevan, Republic of Armenia
A. Takhtajan Institute of Botany of the National Academy of Sciences of the Republic Armenia, Yerevan, Republic of Armenia
A. Takhtajan Institute of Botany of the National Academy of Sciences of the Republic Armenia, Yerevan, Republic of Armenia
چکیده
Psephellus erivanensis Lipsky (Asteraceae) is a threatened knapweed species of the Armenian flora, endemic to the Atropatene floristic sub-province of the Armeno-Iranian floristic province. According to the results of the conducted study, P. erivanensis is identified as a polycarpic rhizomatous hemicryptophyte with perennial rosettes and annual leafy elongated generative shoots. The diploid cytotype has been found for the species to be ۲n=۳۲, the karyotype is symmetric, consisting of ۲ pairs of submetacentric and ۱۴ pairs of metacentric chromosomes, ۰.۷۷-۱.۵۴ µm in size. The average pollen fertility of P. erivanensis is quite high and is in the range of ۹۳-۹۹%, which indicates a high seed set, contributing to the species' reproduction. Plants introduced in the Yerevan Botanical Garden have a full development cycle, mature seed formation, and vegetative self-renewal ability, in comparison with natural ones, are distinguished by higher total humidity, intensity of transpiration and photosynthesis, and a decrease in water deficit. The species is recommended for ex-situ conservation through living plant collection creation and, considering its ornamental value, for utilization in arid landscaping schemes. The article is illustrated with a map of the species distribution in Armenia, original photographs, and tables.کلیدواژه ها
Psephellus erivanensis, conservation, Eco-physiology, Morphology, reproductive features, Armeniaاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.