scholarly journals Formation of the Astilbe Buch.-Ham collection in a continental climate

2021 ◽  
Vol 10 (3) ◽  
pp. 34-40
Author(s):  
Olga Yurievna Vasilyeva

The paper analyzes the dynamics of formation of a collection of Astilbe varieties and species included in the bioresource collection USU 44053 in the conditions of Western Siberia forest-steppe. The ways of further expansion of Astilbe collection fund are substantiated by attracting representatives of the Astilbe chinensis , A. crispa groups; varieties with rhombic, narrow-lobed and pyramidal inflorescences, primarily belonging to the group of colors: red, dark red, purple and dark purple. In contrast to the conditions of the middle zone of Russia in which Astilbe are divided into four groups according to the period of flowering: 1) very early (end of June - July), 2) early (July), 3) medium (mid-July - mid-August) and 4) late (end of August - mid-September), for the conditions of Western Siberia forest-steppe, with intense heat gain in mid-May-early June, the flowering dates of very early and early varieties converge. Accordingly, there are three groups: early-flowering (bloom July 8-10), medium-flowering (bloom from July 15-18), late-flowering (bloom from late July-early August). It is proposed to add a narrow-lobed and pyramidal-drooping inflorescence to the traditionally described forms of Astilbe varieties. The expansion of the set of dwarf varieties from the A. crispa group with strongly dissected fringed leaves gives additional opportunities for a landscape design.

Author(s):  
O. Yu. Vasilyeva ◽  
M. S. Lezin ◽  
M. V. Kozlova

The article presents for the first time the results of studying the ontogenesis of Prunus pumila L. and Rosa glauca Pourr. seed origin when growing plants outside the natural range in the continental climate of the Southern Urals and forest-steppe of Western Siberia. The marker features of ontogenetic states of Rosa glauca in the process of forming shrub biomorphe are described. It has been noted that Prunus pumila in juvenile and immature state develops at an accelerating pace and form a powerful area of the hypocotyls and root neck, which defines further processing of the rootstock quality.


2019 ◽  
Vol 8 (1) ◽  
pp. 36-42
Author(s):  
Zinaida Konstantinovna Klimenko ◽  
Olga Yurievna Vasilyeva ◽  
Ekaterina Vladimirovna Zorina ◽  
Olga Vladimirovna Dzuba

The paper states that it is necessary to expand the work in the field of ecological and geographical testing of economically valuable plant objects in the system of Botanical institutions supervised by the Council of Botanical gardens of Russia. The role of unique natural polygons of three Botanical gardens belonging to the Russian Academy of Sciences is emphasized. The main collection funds of the Nikita Botanical Garden are located in the Mediterranean climate zone (Yalta). In the Central Siberian Botanical Garden of Siberian Branch of Russian Academy of Sciences plants are introduced into the culture in the conditions of the continental climate of the forest-steppe of Western Siberia (Novosibirsk). In the Botanical Garden-Institute of Far Eastern Branch of Russian Academy of Sciences the gene pool of cultural and natural flora is studied in the monsoon climate (Vladivostok). The authors describe peculiarities of seasonal development, morphogenesis, organogenesis, ontogeny and reproductive biology of garden roses varieties of the Nikita Botanical Garden selection in three climatic zones. It is shown that in the geographical point of varieties breeding located near Yalta, the influence of climatic conditions leads to the absence of winter rest and natural end of the growing season - it is artificially regulated by the annual February pruning. In the monsoon climate of Vladivostok, the largest number of cloudless days (up to 80%) is observed in winter, which can not affect the vegetation of roses in the open ground, but has a beneficial effect on the development and cutting production of roses in greenhouses. In the forest-steppe of Western Siberia varieties from the groups of tea-hybrid, floribunda, grandiflora, Cordes roses and miniature throughout the study period did not enter the postgenerative period, the final ontogenetic state was g3. The main criterion for the selection of garden roses promising varieties in a continental climate is biomorphological - the ability of annual shoots to bloom. Breeding work with roses in the southern coast of the Crimea is carried out in the open ground, in the continental and monsoon climate - in greenhouses.


Author(s):  
N. I. Kashevarov ◽  
R. I. Polyudina ◽  
I. N. Kazarinova ◽  
D. А. Potapov

A new cultivar of smooth bromegrass (Bromopsis inermis Leyss) Flagman was developed by methods of mass selection and polycross. Breeding and wild forms of various ecological and geographical origins are used as an initial material. The authors of the cultivar: Kazarinova I.N., Polyudina R.I., Straub A.A., Gomasco S.K. Studies were conducted on the Central experimental base of the Siberian research Institute of fodder crops of the Siberian Federal Scientific Centre of Agro-BioTechnologies of the Russian Academy of Sciences, located in the forest-steppe zone of Western Siberia (Novosibirsk region, Novosibirsk district, Krasnoobsk). The cultivar is mid-ripening: the period from the beginning of spring aftergrowing to mowing ripeness is 63-75 days and to full maturing of seeds is 95-111 days. The yield of dry matter is 8.3 t/ha, which exceeds the standard by 8%, seed yield - 0.62 t/ha, higher than the standard by 28%. The dry matter yield of the cultivar Flagman for the fourth year of use exceeded the standard by 23% and reached to 11.4 t/ha. The 1000 seeds weight is 3.0-3.4 g. The plant height is 90-140 cm. Tilling capacity is up to 40 stems per tuft. Foliage varies from 32 to 50% depending on the age of the grass and environment conditions. The resistance of the cultivar to brown rust and helminthosporiosis is higher than of the standard. The copyright certificate No. 71916 and patent No. 9653 were received.


2018 ◽  
Vol 1 (72) ◽  
pp. 161-165
Author(s):  
Nina Kazydub ◽  
◽  
Svetlana Kuzmina ◽  
Evgeniy Freilikh ◽  
◽  
...  

Radiocarbon ◽  
2012 ◽  
Vol 54 (3-4) ◽  
pp. 737-747 ◽  
Author(s):  
V I Molodin ◽  
Z V Marchenko ◽  
Y V Kuzmin ◽  
A E Grishin ◽  
M van Strydonck ◽  
...  

This paper focuses on the chronology of Middle Bronze Age complexes in the Baraba forest steppe (western Siberia). Three sites were radiocarbon dated, Stary Tartas 4, Sopka 2, and Tartas 1. The Late Krotovo culture was dated to the 18–19th centuries BC, the Andronovo complex (Fedorovo stage) to the 15–18th centuries BC, and the Mixed Andronovo complex dated to the 15–17th centuries BC. These values are some 300–500 yr older than previously thought, and the new results are consistent with14C dates of the Andronovo cultural complex in northern Eurasia. Based on these data, the 15th century BC is the upper chronological limit of the Andronovo period.


2018 ◽  
Vol 44 (3) ◽  
pp. 241-244 ◽  
Author(s):  
E. Yu. Toropova ◽  
A. P. Glinushkin ◽  
M. P. Selyuk ◽  
O. A. Kazakova ◽  
A. V. Ovsyankina

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