Embryology of Gentiana angulosa and G. pontica (Gentianaceae)

1180 8 4849 2 13504 document 4849 256422014_Embryology_of_Gentiana_angulosa_and_G._pontica_(Gentianaceae)_ev=prf_pub text/html e266a7e14b8d0f5dad23922f14799c5d MD5 158944 2014-02-21 16:02:31 http://eprints.iliauni.edu.ge/1180/1/256422014_Embryology_of_Gentiana_angulosa_and_G._pontica_%28Gentianaceae%29_ev%3Dprf_pub 1180 1 1 text/html text en public

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7776 2 21110 document 7776 lightbox.jpg image/png 86e2a12b45c277d72a11c19592f1462e MD5 55959 2015-03-24 11:12:55 http://eprints.iliauni.edu.ge/1180/3/lightbox.jpg 1180 3 3 image/png other Thumbnails conversion from text to thumbnail_lightbox ge public

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http://eprints.org/relation/isVersionOf http://eprints.iliauni.edu.ge/id/document/7772 http://eprints.org/relation/isVolatileVersionOf http://eprints.iliauni.edu.ge/id/document/7772 http://eprints.org/relation/issmallThumbnailVersionOf http://eprints.iliauni.edu.ge/id/document/7772 archive 65 disk0/00/00/11/80 2014-02-24 07:50:29 2015-03-24 11:02:24 2014-02-24 07:50:29 article show maia_akhalkatsi@iliauni.edu.ge Akhalkatsi Maia maia_akhalkatsi@iliauni.edu.ge Gvaladze Guranda Gachechiladze Mzia Taralashvili Natela Embryology of Gentiana angulosa and G. pontica (Gentianaceae) pub QK public Embryology of two gentians - Gentiana angulosa and G. pontica, has been studied for the first time. They show similar morphology and are considered to be relative species. Embryological study has revealed considerable similarity in structure of reproductive organs of G. angulosa and G. pontica. The common characters are: four-loculate anther; 2-celled mature pollen; superior, cenocarpous and paracarpous ovary; unitegmic, tenuinucellate and anatropous ovule; hypodermal unicellular archesporium; linear tetrad of megaspores; Polygonum type embryo sac; pre-mitotic type of fertilization; nuclear endosperm and Solanad type of embryogenesis. The investigated species differ mainly by two quantitative features – numbers of cell layers in the integument (5-8 in G. angulosa, 9-10 in G. pontica) and the antipodals (3-6 in G. angulosa, 3 in G. pontica). The structural difference is only slightly expressed in seed coat structure, which has taxonomic significance. 2004-01-01 published Proceedings of the Georgian Academy of Sciences Biological series B 2 1/2 Department of Biological Sciences of the Georgian National Academy of Sciences 29-34 TRUE 1512 - 2123 http://www.science.org.ge/english.html https://www.researchgate.net/publication/256422014_Embryology_of_Gentiana_angulosa_and_G._pontica_(Gentianaceae)?ev=prf_pub