scholarly journals THE LATENT PERIOD OF SOME OF SPECIES OF THE GENUS MALUS INTRODUCED IN THE PETER THE GREAT BOTANICAL GARDEN

2017 ◽  
Vol 178 (2) ◽  
pp. 25-32 ◽  
Author(s):  
K. G. Tkachenko ◽  
Keyword(s):  
Latent Period ◽  
Botanical Garden ◽  
Peter The Great

scholarly journals PECULIARITIES OF THE LATENT PERIOD IN SOME SPECIES OF THE GENUS Mammillaria Haw. (Cactaceae) CULTIVATED IN THE PETER THE GREAT BOTANICAL GARDEN

VAVILOVIA ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 49-56
Author(s):  
K. G. Tkachenko
Keyword(s):  
Latent Period ◽  
Germination Rate ◽  
Storage Period ◽  
Seed Storage ◽  
Standard Technique ◽  
Botanical Garden ◽  
Botanical Institute ◽  
Komarov Botanical Institute ◽  
Peter The Great ◽  
Long Time

Different species of the Cactaceae family have always been popular as collectible plants. Peter the Great Botanical Garden of the Komarov Botanical Institute holds a representative collection of species from this genus. Of the 185 names adopted according to The Plant List (http://www.theplantlist.org), there are currently about 160 species in the collection of the Garden, plus almost 30 intraspecific taxa. For species that reproduce only by seeds, it is important to study the features of their latent period and evaluate their quality (35 species, 87 accessions). The collection of cacti and succulents of the Peter the Great Botanical garden contains a large number of genera and species as well as forms and varieties from this family. Despite the fact that at present some taxa are united, however, specific grown plants produce seeds of different quality. The results of studying fruits and seeds in a number of species of the genus Mammillaria maintained at Peter the Great Botanical Garden of the Komarov Botanical Institute are presented. The number of seeds in the fruit, the weight of 1000 seeds, and laboratory germination of seeds with different shelf life under laboratory conditions were measured. Seeds were germinated using a standard technique — in Petri dishes on filter paper, without the use of stimulants. It is shown that germination of freshly harvested seeds is slow and stretched in time. Their germination rate does not reach significant performance. The highest germination rate is observed in many species of the genus Mammillaria after 2–3 years of storage. After 5–7 years of storage, the seeds should not be used for exchange between botanical gardens. But anyway, some species (M. flavescens (DC.) DC., M. prolifera subsp. haitiensis (K. Schum.) D. R. Hunt, M. rhodantha Link et Otto) of this genus remain viable for a long time (up to 10 years, as for example, M. mammillaris (L.) Hikers. [=M. simplex Haw.]). At the seed laboratory of the Peter the Great Botanical Garden, the seed storage period for species of the genus Mammillaria suitable for interbotanical exchange is set at a maximum of 7 years, for them to be listed in Index Seminum (or Delectus). Older seeds are used to replenish the carpological collection of the Garden.

scholarly journals CYDONIA OBLONGA MILL. (ROSACEAE) AT THE PETER THE GREAT BOTANICAL GARDEN

2016 ◽  
Vol 177 (4) ◽  
pp. 28-36 ◽  
Author(s):  
G.A. Firsov ◽  
◽  
A. V. Volchanskaya ◽  
K. G. Tkachenko ◽  
N. E. Staroverov ◽  
...  
Keyword(s):  
Botanical Garden ◽  
Cydonia Oblonga ◽  
Peter The Great

scholarly journals Drying out of woody plants at Peter the Great Botanical Garden BIN RAS (Saint Petersburg) and distribution of Phytophthora and Pythiumspecies: monitoring of 2018

2019 ◽  
Vol 14 (14) ◽  
pp. 124-144
Author(s):  
Gennady Firsov ◽  
Vasily Yarmishko ◽  
Alexandra Volchanskaya ◽  
Elizaveta Varfolomeeva ◽  
Ekaterina Malysheva ◽  
...  
Keyword(s):  
Woody Plants ◽  
Botanical Garden ◽  
Saint Petersburg ◽  
Peter The Great

scholarly journals PYRUS ZANGEZURA (ROSACEAE) AT SAINT PETERSBURG

2019 ◽  
Vol 180 (3) ◽  
pp. 12-18
Author(s):  
K. G. Tkachenko ◽  
G. A. Firsov ◽  
L. F. Yandovka ◽  
A. V. Volchanskaya ◽  
N. E. Staroverov ◽  
...  
Keyword(s):  
Vegetative State ◽  
Fruit Size ◽  
Weather Conditions ◽  
Botanical Garden ◽  
Breeding Programs ◽  
Peter The Great ◽  
Adverse Weather Conditions ◽  
Adverse Weather ◽  
Pollinating Insects ◽  
The Common

Pyrus zangezura Maleev (Rosaceae) is a rare species representing the native vegetation of Armenia (Southern Transcaucasus). It was first described in 1936. P. zangezura has been cultivated at the Peter the Great Botanical Garden of the Komarov Botanical Institute (St. Petersburg, Russia) since 1949, where it has reached the height of 8,0 m. For many years, it was in its vegetative state. The first flowering was observed in 2016 (the plant entered the reproductive state). The first progeny from seed was obtained in April 2019. Fruit size was assessed for P. zangezura plants in the dynamics of their development. The studied plants of P. zangezura in the environments of St. Petersburg have demonstrated a high fruiting potential – on average, 109 flowers per 1 m of a shoot. Observations have shown that not all ovules in the opened flowers of P. zangezura are fertilized and produce fruits and seeds. A significant part of the opened flowers, a few days after the onset of flowering, dry up and fall off. On average, 7 fruits are set on 1 m of the shoot in P. zangezura. The reasons for the low flower setting may be variable: impaired pollination processes and insufficient fertility of pollen, underdevelopment of the flower morphological structures, or lack of pollinating insects due to adverse weather conditions. An X-ray analysis of the seeds from the harvests of 2016, 2017 and 2018 showed that the number of plump and fully developed seeds (grades IV and V) in fruits has been growing year by year. As an ornamental plant, P. zangezura may adorn any botanical garden, but it is also promising for urban landscaping, for example, in St. Petersburg. Even in the vegetative state, its elongated lanceolate glossy leaves make it appreciably different from the common P. communis L., and it is especially ornamental during flowering and fruiting. It is as winter-hardy as the common pear-tree, demonstrates resistance to diseases and pests, and may be of importance for breeding programs aimed at the development of resistant cultivars for the Northwest of Russia.  

scholarly journals Biodiversity conservation in Botanical Gardens: collection of Cycadales Pers. ex Bercht. & J. Presl representatives in the greenhouses of the Peter the Great Botanical Garden (BIN RAS)

2021 ◽  
pp. 10-14
Author(s):  
E.M. Arnautova ◽  
◽  
M.A. Yaroslavtseva ◽  
Keyword(s):  
Biodiversity Conservation ◽  
Conservation Status ◽  
Botanical Garden ◽  
Growth Forms ◽  
Botanical Gardens ◽  
Peter The Great

The role of Botanical Gardens in biodiversity conservation is considered. The analysis of the greenhouse collection of Cycadales representatives is carried out. Both the general characteristics of this group of plants (distribution, growth forms, reproduction, taxonomy) and the characteristics of the families and genera Cycadales presented in the collection of the Peter the Great Botanical Garden are given. In the greenhouses, 47 species of Cycadales belonging to 9 genera are grown, all species have a conservation status: CR - 7 species, EN - 10 species, VU - 6 species, NT - 16 species, LC - 8 species.

scholarly journals Siberian plants in the collection «Alpine Slides» in the Peter the Great Botanical Garden of Komarov Botanical Institute of RAS

2021 ◽  
Vol 20 (1) ◽  
pp. 53-56
Author(s):  
O. G. Baranova
Keyword(s):  
Plant Species ◽  
Botanical Garden ◽  
Individual Species ◽  
Historical Aspect ◽  
Botanical Institute ◽  
Komarov Botanical Institute ◽  
Peter The Great ◽  
Modern Period ◽  
Central Asian ◽  
Time Periods

The article assesses the richness of the collection fund of Siberian plants that grew in the historical periodfrom 1954 to 1963 and grow in the modern period from 2011 to 2020 in the collection “Alpine Slides” of the Peter the GreatBotanical Garden. The main purpose of this article was to assess the preservation of the collection fund of Siberian andpartly Central Asian plants in the historical aspect. It was necessary to identify the plant species that are most resistant tocultivation in the conditions of St. Petersburg. As a result of the comparison, it was found that at present the collection fundof plants is quite poor, compared to the selected historical segment, and it needs to be replenished. The most stable in thecollection were 22 species, as they existed in the collection both in the selected time periods and exist at the present time.The age of individuals of individual species reaches almost 80 years – Brunnera sibirica, Bergenia × ornata, Actaea dahurica,A. simicifuga, Nepeta sibirica, Spodiopogon sibiricus and others. In the modern period of time, more than 20 species didnot pass the initial introduction test and existed in the collection for no more than 2–3 years. These include Viola altaica,Mertensia sibirica, Peucedanum baicalense, Orostachys thyrsiflora and others.

scholarly journals Abies semenovii B. Fedtsch. at the Peter the Great Botanical Garden

2016 ◽  
Vol 11 (11) ◽  
pp. 111-118
Author(s):  
Kirill Tkachenko ◽  
Gennady Firsov ◽  
Artem Gryaznov ◽  
Nikolay Staroverov
Keyword(s):  
Botanical Garden ◽  
Peter The Great
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