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 ON THE SEED RENEWAL OF TAMARIX RAMOSISSIMA LEDEB. IN THE COLLECTION ALPINARIUM OF PETER THE GREAT BOTANIC GARDEN

2021 ◽  
Vol 31 (2) ◽  
pp. 137-142
Author(s):  
G.A. Firsov ◽  
O.G. Baranova ◽  
N.G. Tseitin
Keyword(s):  
Climate Change ◽  
Botanical Garden ◽  
Tamarix Ramosissima ◽  
Botanic Garden ◽  
Botanical Institute ◽  
Komarov Botanical Institute ◽  
Peter The Great ◽  
Northern Latitudes ◽  
Long Time ◽  
Academy Of Sciences

Information about Tamarix ramosissima Ledeb. has been growing in the Peter the Great Botanical Garden of the Komarov Botanical Institute of the Russian Academy of Sciences in St. Petersburg since 1939. It reached 6.2 m in height at the age of 82. It is considered the most winter-hardy, characterized by long flowering and high decorative effect. The first flowering was noted in 1942, for a long time the plants only bloomed without tying the fruit. After the hot summer of 2010, fruits were first formed and self-seeding appeared in 2011-2012. This is a unique fact for such northern latitudes. The species can be recommended for landscaping and promote its culture further north. In the context of climate change and its warming at the beginning of the XXI century, constant monitoring and continuous phenological observations of Tamarix ramosissima are important.

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 Excursion as an organization form of educational activities in Peter the Great Botanical Garden of Komarov Botanical Institute of Russian Academy of Sciences

2020 ◽  
Vol 9 (1) ◽  
pp. 259-267
Author(s):  
Larisa Petrovna Musinova ◽  
Yuri Guryanovich Kalugin ◽  
Elena Garisonovna Mitina
Keyword(s):  
Modern Science ◽  
Botanical Garden ◽  
Training Methods ◽  
Botanical Institute ◽  
Komarov Botanical Institute ◽  
Russian Academy Of Sciences ◽  
Peter The Great ◽  
History Of ◽  
Academy Of Sciences ◽  
The 19Th Century

The paper provides an overview of the tour guide activities in one of the oldest gardens in Russia - Peter the Great Botanical garden of Komarov Botanical Institute of Russian Academy of Sciences. It is the first time the authors have summarized the experience of working with visitors of the Peter the Great Botanical garden from the end of the 19th century to the present. Much attention is paid to the history of the excursion business in Russia and in the Botanical garden. The incentive to work was the growing interest in Botanical gardens and various forms of the excursion activity that now exist in the Botanical garden of Saint Petersburg. Modern science about excursions broadly describes general basics of conducting excursions, but practical techniques are not presented enough. Therefore, the task of methodological developments for the guides of the Botanical garden becomes relevant. Based on historical experience, the authors describe the rules for preparing for excursions in the Botanical garden, aspects when choosing information for excursions, special training methods, and general recommendations for excursions organization. Specific knowledge about the content of excursions in the Botanical garden will help specialists effectively and competently organize activities for environmental and biological education of both adults and young visitors.

To the memory of the geobotanist. Leonid E. Rodin (to the 100th anniversary of his birthday)

2007 ◽  
pp. 106-107
Author(s):  
B. K. Gannibal
Keyword(s):  
End Of Life ◽  
100Th Anniversary ◽  
State University ◽  
Botanical Institute ◽  
Komarov Botanical Institute ◽  
The Future ◽  
Long Time ◽  
High Level

Leonid Efimovich Rodin (1907-1990) was a graduate of Leningrad state University. To him, the future is known geobotanica, happened to a course in Botanical geography is still at the N. A. Bush. His teachers were also A. P. Shennikov and A. A. Korchagin, who subsequently headed related Department of geobotany and Botanical geography of Leningrad state University. This was the first school scientist. And since the beginning of the 30s of XX century and until the end of life L. E. was an employee of the Department of geobotany of the Komarov Botanical Institute (RAS), where long time worked together with E. M. Lavrenko, V. B. Sochava, B. A. Tikhomirov, V. D. Alexandrova and many other high-level professionals, first continuing to learn and gain experience, then defining the direction of development of geobotany in the Institute and the country as a whole.

High seed viability recorded in an endangered endemic species, 'Isoplexis isabelliana' (Scrophulariaceae), after more than 30 years of storage in a conservation seed bank

2021 ◽  
Vol 42 ◽  
pp. e69341
Author(s):  
Miguel Ángel González Pérez ◽  
Nereida Cabrera-García ◽  
Isabel Cayon-Fernández
Keyword(s):  
Seed Bank ◽  
Germination Rate ◽  
Genetic Material ◽  
Natural Populations ◽  
Seed Viability ◽  
Seed Storage ◽  
Botanical Garden ◽  
Storage Conditions ◽  
Seed Banks ◽  
Ex Situ

Conservation seed banks are essential for ex-situ conservation of genetic biodiversity. These institutions are especially relevant for threatened species and play a vital role in their conservation by preserving genetic material. However, samples deposited in the seed banks must germinate when necessary to use them (i.e., recovery plans, etc.). This study uses four accessions of the endemic endangered species from Gran Canaria Island (Canary Islands), Isoplexis isabelliana (Webb & Berthel.) Masf. (Scrophulariaceae). Germination tests were carried out to measure seed viability through time and the possible impact of seed storage on their viability. These accessions have been kept in the seed bank for four months to thirty years under different storage conditions. Germination results differed for seeds after 45 days of exposition using 16 hours light and 8 hours darkness at 17 °C. Accessions kept in the seed bank, independently of storage, showed a high germination percentage (89%). Whereas the accessions with rough storage conditions showed a 0% germination rate. The results highlighted the good state of conservation of the material deposited in the Seed Bank of the Botanical Garden "Viera y Clavijo" and the reliability of the temperature and humidity conditions in which the seeds of I. isabelliana have been stored. We consider these results as momentous since several natural populations of I. isabelliana has been affected by the last forest fire on the island.

Contributions to the study of micromycetes in the park and greenhouses of the Komarov Botanical Institute RAS (St. Petersburg)

2011 ◽  
Vol 45 ◽  
pp. 118-132 ◽  
Author(s):  
V. A. Mel'nik
Keyword(s):  
Botanical Garden ◽  
Rust Fungi ◽  
Anamorphic Fungi ◽  
Botanical Institute ◽  
Komarov Botanical Institute ◽  
Powdery Mildews

Data on 200 micromycetes revealed in the Botanical Garden of the Komarov Botanical Institute are reported. Most of them refer to anamorphic fungi, namely 162 species (hyphomycetes — 81, coelomycetes — 81). Peronosporaceous fungi are represented by 14 species, ascomycetes by 18 species (including 11 powdery mildews), rust fungi by 6 species. Specimens of these micromycetes are kept in the mycological herbarium of the Komarov Botanical Institute (LE).

scholarly journals Effect of polyethylene glycol 6000 and storage period on seed quality of cocoa (Theobroma cacao L.)

2014 ◽  
Vol 30 (1) ◽  
Author(s):  
Astiti Rahayu ◽  
Triani Hardiyati ◽  
Ponendi Hidayat
Keyword(s):  
Seed Germination ◽  
Seed Quality ◽  
Storage Period ◽  
Seed Storage ◽  
Peg 6000 ◽  
Randomized Design ◽  
Long Time ◽  
Physiological Quality ◽  
And Storage

Increased productivity of cocoa needs high quality of cocoa seeds which are generally provided by certified seed gardens located far from smallholders farm, where seed delivery takes long time and may reduce physiological quality of seeds. One effort to maintain the seed quality is by treatment the seeds with polyethylene glycol6000 (PEG 6000). This study was aimed to study the interaction of PEG 6000 concentration and storage period on cocoa seed quality, and to determine the best concentration of PEG 6000 and storage period to maintain cocoa seed quality. The research was conducted in seed storage room, seed laboratory and green houseof PPPPTK, Cianjur. The experimental design used was a factorial completely randomized design and each combination treatment repeated three times. The first factor was concentration of PEG 6000 of 0%, 20%, 40%, and 60%, and the second factor was the storage period of 3 weeks, 6 weeks, 9 weeks, and 12 weeks. The results showed that concentration of PEG 60% with three weeks storage period was able to minimize the number of moldy seeds. The concentration of PEG 20%, 40%, and 60% were able to prevent seed germination in storage until six weeks. Concentration of PEG 6000 20% was able to maintain moisture content, seed germination, and germination rate.Key words:cocoa seed, storage, recalcitrant, PEG

Memories by Leonid Rodin about Alexei Iljinski

2019 ◽  
pp. 103-110
Author(s):  
A. K. Sytin ◽  
B. K. Gannibal
Keyword(s):  
Botanical Garden ◽  
Nazi Germany ◽  
Botanical Institute ◽  
Komarov Botanical Institute ◽  
Humanitarian Mission ◽  
Rightful Place ◽  
History Of

The publication of memoirs essay by Prof. Leonid Rodin — outstanding geobotanist and desert researcher — is devoted to some biography aspects of his teacher, Prof. Alexey Iljinski. Rodin’s aim was to restore scientific activities rightful place of Alexey ­Iljinski in history of the Department of Geobotany of the Komarov Botanical Institute. Of particular importance is the description of the humanitarian mission of both botanists to Berlin on the eve of the surrender of Nazi Germany. A meeting with the director of the Botanical Garden and the Museum (Berlin-Dahlem), Prof. Ludwig Diels in May 1945, is described.

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