Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Ivanka Semerdjieva"'
Publikováno v:
Plants, Vol 13, Iss 17, p 2419 (2024)
Of the six juniper species found in the Bulgarian flora, three of the species have controversial taxonomic positions. Juniperus pygmaea K. Koch and J. sibirica Burgsd. exhibit similar morphological characteristics to J. communis L. in terms of leaves
Externí odkaz:
https://doaj.org/article/b15b87f958f640d69f99e8e64ca5f2a2
Autor:
Ivanka Semerdjieva, Valtcho D Zheljazkov, Ivayla Dincheva, Tzenka Radoukova, Tess Astatkie, Vasilina Maneva, Dina Atanasova, Hafize Fidan, Stanko Stankov, Albena Stoyanova
Publikováno v:
PLoS ONE, Vol 19, Iss 2, p e0294126 (2024)
The aims of this study were to (1) establish the intrapopulation and seasonal variation of Juniperus excelsа essential oil (EO); (2) compare the J. excelsa concrete and resinoid composition with its EO composition; and (3) investigate the potential
Externí odkaz:
https://doaj.org/article/41e58a86f61c449ea158796037659d44
Autor:
Ivanka Semerdjieva, Charles L. Cantrell, Valtcho D. Zheljazkov, Tzenka Radoukova, Lyubka H. Koleva-Valkova, Tess Astatkie, Miroslava Kačániová, Daniela Borisova
Publikováno v:
Heliyon, Vol 10, Iss 1, Pp e22967- (2024)
Pinus heldreichii Christ. (Bosnian pine), a Tertiary relict and Balkan sub-endemic, has not been comprehensively studied for its essential oil (EO) profile and bioactivity of its different plant parts. This study aimed to determine the EO yield, comp
Externí odkaz:
https://doaj.org/article/e8d6a979ef934474b886abe3ccd09202
Autor:
Ivanka Semerdjieva, Elina Yankova-Tsvetkova, Valtcho D. Zheljazkov, Lyubka H. Koleva-Valkova, Rozalia Nikolova
Publikováno v:
Plants, Vol 12, Iss 13, p 2436 (2023)
Satureja pilosa Velen., S. coerulea Janka and S. kitaibelii Wierzb. ex Heuff. are Balkan endemic species, and they are distributed in restricted territories, primarily found in dry grasslands, rocky slopes, and stony habitats. This study presents the
Externí odkaz:
https://doaj.org/article/99e91d23773f494dbd007eb69ebb6ac9
Autor:
Ivanka Semerdjieva, Valtcho D. Zheljazkov, Ivayla Dincheva, Neshka Piperkova, Vasilina Maneva, Charles L. Cantrell, Tess Astatkie, Albena Stoyanova, Tanya Ivanova
Publikováno v:
Plants, Vol 12, Iss 4, p 923 (2023)
Hypericum species and especially H. perforatum L. are well known for their therapeutic applications. The present study assessed the essential oil (EO) composition, and antifungal and aphid suppression activity of seven Bulgarian Hypericum species. Th
Externí odkaz:
https://doaj.org/article/a8a247b24b87415ba764a580d24896c9
Autor:
Milena Nikolova, Ina Aneva, Petar Zhelev, Ivanka Semerdjieva, Valtcho D. Zheljazkov, Vladimir Vladimirov, Stoyan Stoyanov, Strahil Berkov, Elina Yankova-Tsvetkova
Publikováno v:
Plants, Vol 12, Iss 1, p 111 (2022)
Alkanna tinctoria (L.) Tausch Boraginaceae is a medicinal plant whose root is used for its antimicrobial and anti-inflammatory properties. A. tinctoria roots have been subject to numerous studies. However, the aerial parts have been explored less. Th
Externí odkaz:
https://doaj.org/article/c962f2f9a77e41fa9987812e71817d46
Autor:
Valtcho D. Zheljazkov, Ivanka Semerdjieva, Elina Yankova-Tsvetkova, Tess Astatkie, Stanko Stanev, Ivayla Dincheva, Miroslava Kačániová
Publikováno v:
Plants, Vol 11, Iss 7, p 951 (2022)
This study compared the essential oils (EO) composition of Helichrysum arenarium (Bulgarian populations) with that of the cultivated species H. italicum. The EO composition of H. arenarium and H. italicum were analyzed via gas chromatography. In gene
Externí odkaz:
https://doaj.org/article/c552050ea4c04cd0a5d4e364c417b1de
Autor:
Ivanka Semerdjieva, Galya Petrova, Elina Yankova-Tsvetkova, Tsvetelina Doncheva, Nadezhda Kostova, Rozalia Nikolova, Valtcho D Zheljazkov
Publikováno v:
PLoS ONE, Vol 15, Iss 6, p e0233516 (2020)
The Balkans endemic species Alkanna primuliflora Griseb., A. stribrnyi Velen., and A. graeca Boiss. & Spruner have limited distribution in the Balkan Peninsula and a large variation in the morphological characteristics. The populations of the three A
Externí odkaz:
https://doaj.org/article/526fa48a22db44ae91a99a89ab4be0ee
Autor:
Ivanka Semerdjieva, Boryana Sidjimova, Elina Yankova-Tsvetkova, Milena Kostova, Valtcho D. Zheljazkov
Publikováno v:
Heliyon, Vol 5, Iss 12, Pp e03021- (2019)
Genus Galanthus (Amaryllidaceae) includes 19 species in Europe and the Middle East. The Flora of Bulgaria recognizes two species: G. nivalis L. and G. elwesii Hook. Galanthus elwesii is characterized by relatively high morphological variability, lead
Externí odkaz:
https://doaj.org/article/23d41b918a0a46fba7d92b6db228c388
Autor:
Marina Stanilova, Boryanka Traykova, Vladimir Vladimirov, Maria Petrova, Ivanka Semerdjieva, Elina Yankova-Tsvetkova
Publikováno v:
Proceedings of the Bulgarian Academy of Sciences. 75:1454-1461
Helichrysum arenarium, known as sandy everlasting, is a perennial plant species, used in traditional medicine. In Bulgaria, it is protected by the Biodiversity Act and under a special regime of use based on the Medicinal Plants Act. Seeds from five B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f21f5dfc7eb03401721b5d923f353b1
https://doi.org/10.7546/crabs.2022.10.07
https://doi.org/10.7546/crabs.2022.10.07