THE SECTION OF CULTIVATED PLANTS IN THE CENTENNIAL HISTORY OF THE RUSSIAN BOTANICAL SOCIETY (RBS)

The article presents a brief history of the Russian Botanical Society (RBS) and its Section of Cultivated Plants

Biogeochemical features of fallow lands in the steppe zone

Fallow lands in ancient agricultural areas of Northwestern Crimea which had experienced repeated phases of agricultural activity at different time periods (the Late Bronze Age, antiquity, and the last 150−200 years) have been studied. The most informative and evolutionarily significant biogeochemical indicators of relict agricultural loads and duration of fallow periods are specifie

Magnetic surveys locate Late Bronze Age corrals

A new type of livestock enclosure from the Late Bronze Age has been discovered. Stone walls outline a pair of circular or oval areas that may be up to 50 m in diameter. The stone walls are invisible at the surface; they were discovered in north-western Crimea and only with the aid of remote sensing and geophysical survey

On Multilabel Classification Methods of Incompletely Labeled Biomedical Text Data

Multilabel classification is often hindered by incompletely labeled training datasets; for some items of such dataset (or even for all of them) some labels may be omitted. In this case, we cannot know if any item is labeled fully and correctly. When we train a classifier directly on incompletely labeled dataset, it performs ineffectively. To overcome the problem, we added an extra step, training set modification, before training a classifier. In this paper, we try two algorithms for training set modification: weighted k-nearest neighbor (WkNN) and soft supervised learning (SoftSL). Both of these approaches are based on similarity measurements between data vectors. We performed the experiments on AgingPortfolio (text dataset) and then rechecked on the Yeast (nontext genetic data). We tried SVM and RF classifiers for the original datasets and then for the modified ones. For each dataset, our experiments demonstrated that both classification algorithms performed considerably better when preceded by the training set modification step

MOBILIZATION OF VEGETABLE PLANT GENETIC RESOURCES TO THE VIR COLLECTION FROM THE TERRITORY OF ARMENIA (BASED ON THE DATA OF VIR'S INTERNATIONAL EXPEDITION TO ARMENIA IN 2017)

Background. Plant genetic resources (PGR) mobilization, their preservation in collections (ex situ) and in plant communities (in  situ/on farm), their studying as well as systematization of the  related information in databases are not just relevant and topical  issues; they are vital to ensure food, environmental and bioresource  security of Russia. In view of this, the number of VIR's expeditions to various regions of Russia and neighboring countries to collect food,  fodder and industrial crops and their wild relatives is growing every  year. Armenia is one of the richest territories in genetic resources.  The richness and diversity of PGR in general and vegetable crops in  particular is determined by several factors, including geographical  features, soil and climate, the origin of cultivated plants, the  traditions of their cultivation and consumption, and others.Methodology. Surveys of the planned territories were carried out  along the routes from Yerevan in different directions, and lasted from one to three days. The collecting method complied with the  Guidelines for collecting plant resources to replenish the collection of VIR.Results. During the period from August 06 to 20, 2017, 191  collection sites were explored, and various accessions were  collected: 225 seed samples for the VIR collection, and 53 herbarium specimens of wild lettuce for VIR's Herbarium, 48 of which belonged  to Lactuca L. spp., and 5 to the species of close genera (Cicerbita  Wallr., Cephalorinhus Boiss.). The length of the route was 2,863 km

A new subspecies of wheat: Triticum dicoccon (Schrank) Schuebl. subsp. nudicoccon Kobyl. et Smekal.

In recent years, an increased interest in emmer wheat (Triticum dicoccon Schrank) has been observed, due to the dietary value of its grain, which is used for making highquality cereal products. The main disadvantages of this crop are a relatively low yield, if compared with other wheat species, a brittle ear, and problems with grain threshability (filmy kernels are threshed out of the ear together with the chaff). Thus, developing hulless cultivars of emmer is at present an urgent task. Constant lines of naked emmer wheat, which make up the described subspecies, served as the material for this research, including four lines developed at VIR by A. F. Merezhko and seven by V. D. Kobylyansky. The wheat produced from interspecific crosses between different varieties of the hulless T. durum Desf. and various local forms of the hulled T. dicoccon (Schrank) Schuebl. has deserved the rank of subspecies (T. dicoccon (Schrank) Schuebl. subsp. nudicoccon Kobyl. et Smekal.). The obtained hulless wheat demonstrates morphological features characteristic of T. dicoccon: its ear is flat, there are two grains in the spikelet, etc., while its kernels are easily separated from chaff

The Use of Remote Sensing Methods for Studying of the Ancient Greek Land Division System of Tauric Chersonesos on the Mayachnyy Peninsula of the Crimea Peninsula

A detailed analysis of the 1940s archival aerial photographs and a 1966 satellite image, has shown that the earliest land division of the ancient Tauric Chersonesos affected the Sredinnyy Peninsula of the Crimean Peninsula, as well as the territory to the southeast of the fortification on the isthmus of Mayachnyy, which is on the outside the Mayachnyy Peninsul