Kiril Hristov Stoyanov

Agricultural University – Plovdiv · Department of Botany and Agrometeorology

The presented study describes some morphological and anatomical features of collected specimens of Sisyrinchium rosulatum E.P.Bicknell, from the first reported locality in Bulgaria. The isolated DNA sequences from the nuclear ITS1-5.8S rDNA-ITS2 region and the chloroplast rpoC1 gene proved the recognition of S. rosulatum and excluded the previously...

In the Pirin Mountains, at an elevation of around 1000 m, three populations of a new species of Bulgarian flora from the genus Crocus, series Verni, were discovered. The species was compared to the morphologically related C. veluchensis, and presented with diagnostic morphological and anatomical features. Despite the high degree of morphological si...

This is the first report on the autumn-flowering species Crocus speciosus, belonging to C. ser. Speciosi from the Bulgarian flora. The species was found in Southeastern Bulgaria, in the area between Ahtopol and Rezovo. Re-examining the Bulgarian collections, the earliest specimen was collected in 1975, was probably overlooked, and most likely deter...

The taxonomy of the genus Crocus ser. Nudiscapus and the relationship between species in the genus are complicated and often contradictory. In this study, the genetic diversity and molecular markers’ pattern variation among members of the C. biflorus group in Bulgaria were evaluated. For this study, five Crocus L. species from 15 natural population...

Stoyanov K., Raycheva Ts. & Cheschmedzhiev I. 2022. Key to the native and foreign vascular plants in Bulgaria. Interactive extended and supplemented edition. Academic Publishing House of the Agrarian University. (in Bulgarian). ISBN 978-954-517-313-4 This is the lightweght version of our mobile interactive key. You can download also versions for...

The distribution of genus Iris subgenus Iris was presented and notes of its taxonomy were given in the paper. Based on the critical processing of the collections in the national herbaria (SOM, SOA and SO), the literature sources, and our field observation we have produced distribution maps. New chorological data are reported for Iris reichenbachii,...

For a long time, the Balkan endemic species Crocus pallidus has been unconfirmed and neglected for the flora of Bulgaria. It has remained an uncertain species from the Balkans, often listed as a synonym of C. weldenii. The morphological resemblance to the albinistic forms of C. chry-santhus has led to incorrect identification in the past, resulting...

The book contains determination keys for the vascular plants (wild and cultivated) in Bulgaria and the neighboring territories of Romania, Serbia, North Macedonia, Greece, and Turkey. The determination tables contain 6963 species (native and foreign) in 1322 genera from 310 families. (in Bulgarian)

The current study provides detailed information about Rumex kerneri Borbás in the flora of Bulgaria. The data about this species in the floristic literature is contradictory and uncompleted. The morphologically closely allied species R. cristatus DC. и R. patientia L. misleads in the determination of the species. Both species are used as a referent...

Crocus adamioides Kernd. et Pasche, as recently known, was originally treated as C. biflorus Mill. subsp. adamii B. Mathew in the flora of Bulgaria by Mathew (1982) and verified by Rukšāns (2017). The taxon was afterwards described as a separate species (Kerndorff et al. 2012), with the holotype collected in Kırklareli Province, European Turkey. Th...

2021): Overview of the floristic and taxonomic studies on Iridaceae Juss. in Bulgaria.-Thaiszia-J. Bot. 31 (1): 087-104. Abstract: According to the current data, the family Iridaceae is represented in Bulgaria by 30 species, grouped into 5 genera. The territory of Bulgaria, as part of the Balkan Peninsula, is characterized as a part of a secondary...

New and confirming localities of rare species of Bulgarian flora are reported: Asparagus maritimus, Tragopogon pratensis, Strepropus amplexifolius, Scilla bithynica, Anemone blanda, Aquilegia aurea, Utricularia astralis, Corallorhiza trifida, Physostegia virginiana, Androsace hedreantha, Pedicularis oederi, Rhynchocorys elephas. Voucher specimens a...

Orobanche cumana is a holoparasitic plant naturally distributed from central Asia to south-eastern Europe, where it parasitizes wild Asteraceae species. It is also an important parasitic weed of sunflower crops. The objective of this research was to investigate genetic diversity, population structure, and virulence on sunflower of O. cumana populat...

Table S1: Characteristics (the expected band size, number of alleles, observed and expected heterozygosity, and FST values) of 15 microsatellite marker loci genotyped in 260 Orobanche cumana individuals from 14 populations and subpopulations. Table S2: Values of the genetic distance coefficient GST calculated between all pairs of O. cumana populati...

The sunflower broomrape -Orobanche cumana (Wallr) parasitizes on roots of sunflower plants and is a serious constraint on sunflower production, causing yield losses of up to 60%. The variability of Internal Transcribed Spacers1/2 of ribosomal cistron (ITS1/2) and ribulose-bisphosphate carboxylase pseugene (RbcL) in 32 samples of O. cumana and 4 sam...

New data about the natural parasitism of Phelipanche ramosa (L) Pomel, P. mutelii (Shultz) Pomel, P. oxyloba, P. arenaria and P. purpurea in Bulgaria are collected. The information for the hosts describes 46 new trophic systems with species from the families: Brassicaceae, Solanaceae, Fabaceae, Asteraceae, Apiaceae, Poaceae, Lamiaceae, Scrophularia...

The family Pyrolaceae is represented in Bulgaria by six species, belonging to three genera. The viewpoints for the taxonomical position of the species in this family are not clearly unilateral. The aim of this study is to find molecular markers, allowing the objectively differentiation of the genera in this family, without use of morphological char...

The data about the natural parasitism of genus Orobanche s.s. have been analyzed for the species in Bulgaria: Orobanche cumana Wallr., O. alba Steph. ex Willd., O. reticulata Wallr., O. serbica Beck & Petrovic, O. pancicii Beck, O. minor Sm., O. amethystea Thuill., O. esulae Pancic, O. pubescens D’Urv., O. loricata Rchb., O. crenata Forssk., O. cay...

The current study represents investigation on morphological and anatomical characters of five native species of genus Asparagaceae -A. tenuifolius, A. acutifolius, A. maritimus, A. verticillatus and A. officinalis. Have been prepared anatomical features of phylloclade and stems of the taxa to evaluate the importance of anatomical parameters as a to...

The relations between Monotropa hypopitys and four members of Pyrolaceae collected in Bulgaria were investigated using five ISSR markers. The genetic differences given by each used primer were illustrated graphically. The selective ability of each primer was discussed according to the obtained results. The phylogenetic relationships were illustrate...

The family Orobanchaceae consists of parasitic species. One group of taxonomically problematic species is subsection Minores (Beck) Teryokhin genus Orobanche. The species in this subsection (except O. crenata) have been often assigned to aggregate O. minor because of their great morphological similarity. The aim of this study was to find useful mol...

Orobanchaceae (broomrapes) is a morphologically diverse family of predominantly herbaceous, parasitic plants. The majority of species are facultative or obligate root parasites that subsist on broad-leaf plants, thereby depleting them of nutrients, minerals and water. The taxonomy status of the family Orobanchaceae among other flowering plants is o...

Iridaceae is a family of perennial plants with almost worldwide distribution. The taxonomy of the family is based mainly on the morphology, anatomy, embryology and chromosome numbers. The systematics and phylogeny within the family is still subject of debates. This is mainly because most of the classification schemes and determination keys are base...

In Bulgaria the holoparasitic family of broomrapes (Orobanchaceae) is represented by 25 species from two genera. The local diversity of the broomrapes in Bulgaria is still grossly under-studied using modern approaches. This not only leads to unclear status of taxonomically problematic species and their local intraspecific taxa, but also hampers the...

Raycheva, Ts. & Stoyanov, K. 2012. Status of the collections of sect. Limniris (Iridaceae) in the Bulgarian herbaria. A critical revision of the deposited herbarium samples of genus Iris sect. Limniris in the national herbaria (SOM, SOA and SO) is done. The distribution data in Bulgaria are revised according to the existing materials, records from...

LV, кн. 2, 2010 г. Юбилейна научна конференция с международно участие Традиции и предизвикателства пред аграрното образование, наука и бизнес Agricultural University – Plovdiv, S cientific works, vol. LV, book 2, 2010 Abstract Genus Orob anche is represented by 18 species in B ulgaria. S amples were collected from different places in Bulgaria inhab...

LV, кн. 2, 2010 г. Юбилейна научна конференция с международно участие Традиции и предизвикателства пред аграрното образование, наука и бизнес Agricultural University – Plovdiv, Scientific works, vol. LV, book 2, 2010 Jubillee S cientific Conference with International Participation Traditions and Challenges of Agricultural Education, S cience and Bu...

summary book This study covers revision of materials from the Bulgarian (SOM, SOA and SO) and some European W, WU, MA, COA, I) herbaria. The author's specimens are collected during 2002-2008. Three groups of methods are applied – morphological, molecular and ecological. The familly is represented in Bulgaria by two genera – Phelipanche (2 sections,...

New collected material of genus Orobanche sect. Orobanche subsect. Minores and both specimen existing in Bulgarian herbaria and data published before are revised and used for creation of maps. The chorological data about the species and intraspecific taxa are reconsidered. New data were added for: O. minor (4 regions, 1 subregion), O. amethystea (2...

Five species of Phelipanche genus in Bulgaria are studied using ISSR markers – Phelipanche purpurea, Ph. arenaria, Ph. mutelii, Ph. oxyloba and Ph. ramosa. Dendrograms are constructed by the results of each primer and used for the construction of a cladogram. The results show a specific grouping of species and sec-tions. Because the method is free...

Five species of the Orobanchaceae family in Bulgaria are examined: Phelipanche purpurea, Ph. mutelii, Ph. oxy lo- ba, Ph. ramosa, and Orobanche cumana. The results of electrophoretic survey in describing peroxidase isozymes have shown ten specific loci. The species are characterized by specific bands of anodic and cathodic migration. The approach c...

SOA herbarium contains more than 100 000 herbarium sheets. Analysing the existing systems and standards, an electronic herbarium documentation system is created. The used software is described and the capacities of the documentation system are demonstrated. The structure of the database is presented and described according to the data blocks and da...

New specimen collections of the genus Orobanche subgen. Phelipanche (Pomel) Tzvel. as well as existing specimens in Bulgarian herbarium and published data have been revised and used for the creation of maps. New habitats for the species O. arenaria Borkh. (2), O. mutelii Schultz (4), O. nana Noë (2), O. oxyloba G .Beck (4), O. purpurea Jacq. (2) an...

Five species of Pyrolaceae in Bulgaria are explored – Moneses uniflora, Orthilia secunda, Pyrola chlorantha, P. media and P. minor. An analytical key based on the anatomical description is compiled.

New collected material of genus Orobanche sect. Orobanche subsect. Glandulosae and both specimens existing in Bulgarian herbaria and data published before are revised and used for creation of maps. One new subspecies (O. alba subsp. xanthostigma) and two forms (O. alba f. lutescens and f. rubiginosa) are reported as new taxa in the flora of Bulgari...

Seeds of six species of genus Phelipanche (Pomel) Sojak in Bulgaria as Ph. arenaria (Borkh.) Pomel, Ph. purpurea (Jacq.) Sojak, Ph. mutelii (Shultz) Pomel, Ph. ramosa (L.) Pomel, Ph. nana (Reut.) Sojak and Ph. oxyloba (Reut.) Sojak are investigated. Internal and external volumes of the seeds are calculated on the basis of measured seed parameters....