Root Crops and Daikon Seeds Yield in Relation to Sowing Time, Methods of Cultivation and Cultivar Features in Conditions of the North-Eastern Caucasus

The paper introduces the data on the experimental study results conducted by the authors in terms of daikon cultivation on root crops and seeds. As a result, the data were obtained targeted at the development of locally adapted technologies to root crops production and a direct technology towards daikon cultivating on seeds in the conditions of Eastern Ciscaucasia. The research is carried out within the project No. 0741-2015-0009 “Improvement of vegetable-seed industry in the Chechen Republic’. The object of the research is daikon cultivar within the selection done by All-Russian Research Institute for Plant Breeding and Seed-Growing: [Sasha, Dubinushka and Moscow Bogatyr]. The yield of commercial daikon root crops is greatly influenced by cultivar, seeding time and plant layout in experimental plots (Table 1). The best option towards yield of sale-root crops of ‘Sasha’ cultivars during summer seeding in the foothill zone of the Chechen Republic was the seeding done on July 31 according to 35×10 cm scheme. In this variant, the highest yield (in terms of hectares) for this cultivar was obtained – 26 t/ha. Cultivar ‘Dubinushka’ gave the best yield at seeding that was done on July 17 with a 70x10 cm scheme. In this variant, the yield of marketable root crops was 55 t/ha. ‘Moscow Bogatyr’ cultivar showed within the experiment the highest yield at seeding on 3 of July according to the 70×10 cm scheme. The yield was 75 t/ha. The yield of mature seeds of daikon is affected much by the time of seeding, the plants' layout on the plots within the experiment and cultivar characteristics (Table 2). The time of ripening and harvesting, as well as, the ratio on overwintered plants depend directly on the cultivar characteristics and the seeding time. The optimal date to seed daikon cultivar ‘Sasha’ for to get seeds for the foothill zone of the Chechen Republic with the direct mode of cultivation was 20.08. The best seeding scheme for this cultivar is 45×10 cm. Seed productivity in this variant was 70 g/m2. Cultivar ‘Dubinushka’ gave the best seed yield when being seeded on August 10 with the direct method of cultivation based on a seeding scheme of 70×10 cm. The yield of seeds in this variant was 95 g/m2. Cultivar ‘Moscow Bogatyr’ seeded by the direct method of cultivation showed in our experimental study the highest seed yield at seeding 1.08 according to a 70×10 cm scheme. The yield per 1 hectare was 9.8 c/ha. The results of the experiment will make it possible to develop the technology for growing daikon for seeds and marketable products in the conditions typical to the territory under study

Genome sequence and analysis of methylotrophic yeast Hansenula polymorpha DL1

Ravin NV, Eldarov MA, Kadnikov VV, et al. Genome sequence and analysis of methylotrophic yeast Hansenula polymorpha DL1. BMC Genomics. 2013;14(1): 837.Background: Hansenula polymorpha DL1 is a methylotrophic yeast, widely used in fundamental studies of methanol metabolism, peroxisome biogenesis and function, and also as a microbial cell factory for production of recombinant proteins and metabolic engineering towards the goal of high temperature ethanol production. Results: We have sequenced the 9 Mbp H. polymorpha DL1 genome and performed whole genome analysis for the H. polymorpha transcriptome obtained from both methanol- and glucose-grown cells. RNA-seq analysis revealed the complex and dynamic character of the H. polymorpha transcriptome under the two studied conditions, identified abundant and highly unregulated expression of 40% of the genome in methanol grown cells, and revealed alternative splicing events. We have identified subtelomerically biased protein families in H. polymorpha, clusters of LTR elements at G + C-poor chromosomal loci in the middle of each of the seven H. polymorpha chromosomes, and established the evolutionary position of H. polymorpha DL1 within a separate yeast clade together with the methylotrophic yeast Pichia pastoris and the non-methylotrophic yeast Dekkera bruxellensis. Intergenome comparisons uncovered extensive gene order reshuffling between the three yeast genomes. Phylogenetic analyses enabled us to reveal patterns of evolution of methylotrophy in yeasts and filamentous fungi. Conclusions: Our results open new opportunities for in-depth understanding of many aspects of H. polymorpha life cycle, physiology and metabolism as well as genome evolution in methylotrophic yeasts and may lead to novel improvements toward the application of H. polymorpha DL-1 as a microbial cell factory

Теплопроводность водных растворов хлоридов металлов подгруппы бериллия

The paper presents experimental data on thermal conductivity of BeCl2 and SrCl2 salt aqueous solutions in the temperature range from 20 to 300 °С  and at various electrolyte concentrations  in mass percent. For the first time thermal conductivity of the system Н2О + BeCl2 has been investigated at high temperatures.The experimental results are described with the help of an empirical equation in the form of: λs = λo (1+ Am + Bm3/2 + Cm2),where λs  and λo – thermal conductivity coefficients of solution and water; A, B and C – coefficients depending on electrolyte nature; m – molality in units mol/kg.The formula error is less than  ±1 %.Приведены  экспериментальные данные по теплопроводности водных растворов солей BeCl2 и SrCl2 в области температур от 20 до 300 °С и при различных концентрациях электролита в массовых процентах. Впервые изучена теплопроводность системы Н2О + BeCl2 при высоких температурах.Экспериментальные результаты настоящей работы описываются эмпирическим уравнением в видеλp = λo (1+ Am + Bm3/2 + Cm2),где λp и λo – коэффициенты теплопроводности раствора и воды; А, В и С – коэффициенты, зависящие от природы электролита; m – моляльность в единицах моль/кг.Погрешность формулы меньше ±1 %

Aqueous Solution Thermal Conductivity of Beryllium-Subgroup Metal Chlorides

The paper presents experimental data on thermal conductivity of BeCl2 and SrCl2 salt aqueous solutions in the temperature range from 20 to 300 °С  and at various electrolyte concentrations  in mass percent. For the first time thermal conductivity of the system Н2О + BeCl2 has been investigated at high temperatures.The experimental results are described with the help of an empirical equation in the form of: λs = λo (1+ Am + Bm3/2 + Cm2),where λs  and λo – thermal conductivity coefficients of solution and water; A, B and C – coefficients depending on electrolyte nature; m – molality in units mol/kg.The formula error is less than  ±1 %