Ivan Gabrielyan

Ivan Gabrielyan
National Academy of Sciences of Armenia | NAS RA · Institute of Botany after Armen Takhtajyan

Doctor of Philosophy
Palaeobotany, modern and ancient vegetation of lakes and forests, limnology, Salicaceae and Aceraceae families, diving,

About

100
Publications
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Introduction
Early Pleistocene flora, vegetation and fauna. Modern water flora. Riparian forests with genus Salix.

Publications

Publications (100)
Preprint
Full-text available
Anthropogenic and natural divergence processes in crop-wild fruit tree complexes are less studied than in annual crops, especially in the Caucasus, a pivotal region for plant domestication. We investigated anthropogenic and natural divergence processes in apples in the Caucasus from using 26 microsatellite markers amplified on 508 wild and cultivat...
Chapter
Evidence from various climate proxies provides us with increasingly reliable proof that only in the past 10 millennia were natural systems more or less as we see them at the present (without considering human impact). Prior to 10,000 years ago, natural systems repeatedly changed under the influence of an unstable climate. This is particularly true...
Article
Full-text available
Spinach (Spinacia oleracea L.) is a highly nutritious leafy vegetable and an economically important food crop. The wild species S. turkestanica Iljin and S. tetrandra Steven ex M. Bieb. are inter-fertile with cultivated spinach and constitute important sources of novel characters to improve spinach varieties, such as for their resistance to pests a...
Poster
Plant Genetic Resources (PGR) plays an important role in the breeding of cultivars with improved agronomic traits. In this context crop wild relatives next to landraces represent important gene reservoirs. The flora and vegetation of Armenia is surprisingly rich and diverse. In the international minor leafy vegetables database (http://documents.pla...
Article
Full-text available
Within the framework of the Russian-Armenian project “The Paleolimnological Aspect of Studying the Evolution of Ecosystems of High-Mountain Lakes of Russia and Armenia” in July-August 2018, we investigated four high-mountain lakes of Armenia. The research focuses on the lakes Kari, Umroi, Akna and Sev. All investigated lakes are located at the alti...
Article
Full-text available
As a result of expeditions carried out in 2018-2019 the research team has discovered a monocotyledonous plant (Ruppia maritima L., Ruppiaceae) from the bottom of Lake Sevan. This taxa is a new family, genus and species for the flora of the Republic of Armenia. The plant is quite widespread throughout the lake: it has been found at two localities in...
Article
Full-text available
Spinach (Spinacia oleracea L.) is a highly nutritious leafy vegetable and an economically important food crop. The wild species S. turkestanica Iljin and S. tetrandra Steven ex M. Bieb. are inter-fertile with cultivated spinach and constitute important sources of novel characters to improve spinach varieties, such as for their resistance to pests a...
Article
Full-text available
Hortun-1 is one of the richest fossil floras of Armenia and dates from Early Pliocene (Early Akchagil). The studied material includes more than 2100 samples kept in the Institute of Botany of NAS RA, in the Palaeobotanical storage. As a result of the study, 4 imprints of leaves of Brassaiopsis mirabilis Kol. were determined, which were the first br...
Conference Paper
Full-text available
As a result of field research in 2018 on high mountain lakes in Armenia preliminary results were obtained on the distribution of vegetation in high-mountainous lakes in Armenia and their catchment basins. It allowed comparative analysis of the distribution of individual species at present and compare it with paleobotanical data. Water, coastal-aqua...
Article
Full-text available
Vavilovia formosa is one of five genera in tribe Fabeae, (Fabaceae, Leguminosae) with close phylogenetic relationships to Pisum. It grows in subalpine and alpine levels in Armenia, Azerbaijan, Georgia, Iran, Iraq, Lebanon, Russia and Turkey and is recognized as an endangered and protected plant. This study was conducted to reveal its intraspecific...
Article
Full-text available
Vavilovia formosa is one of five genera in tribe Fabeae, (Fabaceae, Leguminosae) with close phylogenetic relationships to Pisum. It grows in subalpine and alpine levels in Armenia, Azerbaijan, Georgia, Iran, Iraq, Lebanon, Russia and Turkey and is recognized as an endangered and protected plant. This study was conducted to reveal its intraspecific...
Data
Full-text available
Microthlaspi is a predominantly Eurasian genus which also occurs in the northernmost parts of Africa(Maghreb). The most widespread species of the genus is M. perfoliatum, which can be found from Swedento Algeria and from Portugal to China. The other species are thought to have much more confined dis-tribution ranges, often covering only a few hundr...
Article
Full-text available
Article
Full-text available
Microthlaspi is a predominantly Eurasian genus which also occurs in the northernmost parts of Africa (Maghreb). The most widespread species of the genus is M. perfoliatum, which can be found from Sweden to Algeria and from Portugal to China. The other species are thought to have much more confined distribution ranges, often covering only a few hund...
Poster
Plant Genetic Resources (PGR) plays an important role in the breeding of cultivars with improved agronomic traits. In this context crop wild relatives next to landraces represent important gene reservoirs. The flora and vegetation of Armenia is surprisingly rich and diverse. In the international minor leafy vegetables database (http://documents.pla...
Article
Full-text available
80-ամյա հոբելյանին (հոկտեմբերի 5-9, 2015 թ., Երևան) ԵՐԵՎաՆ-2015
Article
Full-text available
Main conclusion Vavilovia formosa (Stev.) Fed. is a scientifically valuable common ancestor of the plant tribe Fabeae and also important in breeding and agronomy studies of the cultivated Fabeae, but it is close to extinction. A concerted academic and geovernmental effort is needed to save it. Abstract Since 2007, an informal international group...
Article
Full-text available
The Pleistocene geology of Armenia is dominated by widespread occurrence of sediments recording recurring rapid and drastic changes of the environmental conditions during at least the last 2 million years. These sediments, predominantly diatomites, contain a huge variety of various fossil remains, allowing the reconstruction of flora, fauna as well...
Article
Full-text available
Wild perennial pea, Vavilovia formosa is a rare representative of the alpine flora. and its growing in ex situ conditions is very complicated. The assumption that the border between cataphylls and true leaves of perennial Fabeae coincides with the border between wintering and annual plant parts is confirmed by observations on V. formosa samples gro...
Article
The bicentenary of the research on 'beautiful' vavilovia (Vavilovia formosa), a legume crop wild relative with taxonomic and agronomic potential Vavilovia formosa is a relict, endangered species from the highlands of the Caucasus and the Near East. Described in 1812, it has had an uncertain status and was finally recognized as a separate genus of t...
Book
em>Vavilovia formosa (Stev.) Fed. is a relict, endangered species from the highlands of Caucasus and Near East. It was described in 1812, with often uncertain status and finally recognised as a separate genus of the tribe Fabeae Rchb. Our informal international group was established in 2007 to revive the interest in this species since it had been s...
Article
Full-text available
Vavilovia formosa is a relict, endangered species from the highlands of the Caucasus and the Near East. Described in 1812, it has had an uncertain status and was finally recognized as a separate genus of tribe Fabeae (Fabaceae). Our informal international group was established in 2007 to revive the interest in this species as it had been seriously...
Article
Full-text available
— Agenome size of 2C = 235 Mbp and the chromosomal positions of the 5S and 45S rDNA were determined for the perennial, low-chromosome grass Colpodium versicolor (2n = 4). Based on taxonomical and cytological data we suggested previously that C. versicolor represents a putative donor of one of the two parental genomes of the allotetraploid grass Zin...
Data
Distribution of pairwise relatedness coefficients [82] among the M. domestica cultivars. rxy values among cultivars are normally distributed around a mean of zero, with a low variance between pairs of cultivars (Fisher's exact test, P≈1). (TIF)
Data
Relative posterior probabilities (p) for the four historical models compared using approximate Bayesian computations. Models are described in Figure 4. CI2.5 and CI97.5 are boundaries of the 95% confidence intervals. (A) Analyses on a pruned dataset with misclassified wild individuals and individuals with a recent admixed ancestry removed. (B) Anal...
Data
Model checking based on comparisons of test quantities between observed data and 100 pseudo-observed datasets generated using parameter values drawn from posterior distributions. (A) Analyses on the full dataset, (B) Analyses on a pruned dataset with misclassified wild individuals and individuals with a recent admixed ancestry removed. (C) Analyses...
Data
Genetic differentiation (FST) between cultivars of different geographic origins (N = 266). Cultivars of unknown origin have been removed. (DOC)
Data
Method used for approximate Bayesian computations on alternative datasets/admixture times. (DOC)
Data
Description of the Malus species accessions analysed, with their geographic origin and providers. (DOC)
Data
Membership coefficients inferred from the STRUCTURE analysis for M. baccata individuals. (DOC)
Data
Demographic and mutation parameters estimated using approximate Bayesian computation for model c. Posterior distributions are summarized as the mode and boundaries of the 95% credibility intervals (CI2.5 and CI97.5). Demographic parameters are introduced in Figure 4 (note that admixture times are fixed in these analyses). Composite parameters scale...
Data
Geographic origins of diploid M. domestica cultivars (N = 299). See details in Table S1. (TIF)
Data
Proportions of ancestry in two ancestral genepools inferred with the STRUCTURE program from datasets including M. domestica (green, N = 89) and each of the wild Malus species (red) except M. baccata. The x-axis is not at scale. (TIF)
Data
Malus domestica cultivars used in the study, with their use, provider, geographic putative origin. Details of the STRUCTURE analysis summarized in Table 3 are also provided. (DOC)
Data
Prior distributions used in approximate Bayesian computations. Prior distributions are uniform between lower and upper bound. Parameters are introduced in Figure 4 and Table 5. Species names are abbreviated. (DOC)
Data
Description of the Multiplex PCRs (MP01, MP02, MP03, MP04) used for microsatellite amplification. (DOC)
Article
Full-text available
The apple is the most common and culturally important fruit crop of temperate areas. The elucidation of its origin and domestication history is therefore of great interest. The wild Central Asian species Malus sieversii has previously been identified as the main contributor to the genome of the cultivated apple (Malus domestica), on the basis of mo...
Conference Paper
Full-text available
The Pleistocene geology of Armenia is dominated by the widespread occurrence of sediments recording recurring rapid and drastic changes of the environmental conditions during at least the last 2 million years. These sediments, predominantly diatomites, contain a huge variety of various fossil remains allowing the reconstruction of flora, fauna as w...