Comparative embryology of three Gentianaceae species from the Central Caucasus and the European Alps

Akhalkatsi, Maia და Wagner, Johanna (1997) Comparative embryology of three Gentianaceae species from the Central Caucasus and the European Alps. Plant Systematics and Evolution, 204 (1). С. 39-48. ISSN 1615-6110

	ტექსტი 227265921_Comparative_embryology_of_three_Gentianaceae_species_from_the_Central_Caucasus_and_the_European_Alps_ev=prf_pub - გამოქვეყნებული ვერსია Restricted to მხოლოდ რეგისტრირებული მომხმარებლებისთვის Available under License Creative Commons Public Domain Dedication. Download (180kB) | ასლის შეკვეთა
გადახედვა	ტექსტი Comparative embryology of three Gentianaceae species from the Central Caucasus and the European Alps..pdf Download (175kB) | გადახედვა

რეზიუმე

A comparative investigation was carried out on the ovule and seed development of three mountain species ofGentianaceae, the perennial speciesGentiana pyrenaica, and the two short-lived monocarpic speciesGentianella caucasea andG. germanica. In all three species most embryological characters conform to those generally found in the family of theGentianaceae. In some features, however,G. pyrenaica and the twoGentianella species differ from each other. InG. pyrenaica the ovule is anatropous, the integument 8–10 layered and the three reduced antipodals degenerate soon after fertilization. In contrast,G. caucasea andG. germanica form a hemitropous ovule, a 4–5 layered integument and up to 16 antipodal cells by secondary multiplication. All three species exhibit differences in synchronization between embryogenesis and endosperm development. Functional relations between the antipodal structure and the dynamics of seed development of the investigated species are postulated.

ობიექტის ტიპი:	სტატია
თემატიკა:	Q Science > Ecology Q Science > QK Botany
განმათავსებელი მომხმარებელი:	Prof.Dr. Maia Akhalkatsi
განთავსების თარიღი:	30 იანვარი 2014 12:40
ბოლო ცვლილება:	01 აპრილი 2015 05:37
URI:	http://eprints.iliauni.edu.ge/id/eprint/748

Actions (login required)

ობიექტის ნახვა