scholarly journals Assessment of the quality of seeds formed in situ and ex situ as a mandatory element of maintaining seed banks of rare plants

2021 ◽  
Vol 265 ◽  
pp. 05012
Author(s):  
Lyudmila Kavelenova ◽  
Nataly Roguleva ◽  
Nikolay Yankov ◽  
Irina Ruzaeva ◽  
Elena Pavlova ◽  
...  

The possibility of seed genetic banks creating is associated with the ability of many plants seeds (the so-called orthodox ones) to maintain germination ability for a long time, being in a dormant state. This opens up wide prospects for the formation of a reserve seeds fund of rare species that are threatened with extinction in natural communities. Botanical gardens in different countries of the world, including the Russian Federation, are working on the creation of such seed banks. To assess the quality of seeds in relation to agricultural crops, as well as natural flora species, radiography is used. It is this kind of non-damaging express assessment of the quality of seeds that turns out to be the most informative technique for seed material obtained in botanical gardens. The article presents the preliminary results of an X-ray study of the seeds quality of some Samara region rare plants - four species ofthe Iris genus - Iris aphylla L., I. halophila Pall., I. pumila L., I. sibirica L.

Vestnik NSUEM ◽  
2020 ◽  
pp. 71-85
Author(s):  
A. I. Gretchenko ◽  
N. A. Kaverina

The article discusses the principles of social justice in time and space. The emphasis is on transforming the understanding of social justice in Russia’s social policy. Currently, the principle of social justice is implemented by the state in programs for the preservation and development of human capital. The national project «Human Capital» is focused on improving the level and quality of life of citizens, the accessibility of material and social capital, creating opportunities for self-realization and disclosing the talent of each person, and developing a system of social elevators. The authors analyze the change in perception of social justice in Russia for a long time. It is noted that at the beginning of the Soviet period the concept of «social justice» was practically not used. The term «justice» appeared in the Great Soviet Encyclopedia only in 1953, which is currently one of the most popular in public policy. Combining the economy with politics, social policy determines the direction of the main political forces and trends in the Russian Federation.


Rodriguésia ◽  
2018 ◽  
Vol 69 (4) ◽  
pp. 1603-1612
Author(s):  
Tania Maria Cerati

Abstract Engage, educate and raise public awareness of the importance of plant diversity is the means through which plant conservation can be achieved. The Global Strategy for Plant Conservation (GSPC) is a programme to halt the loss of plant diversity and recognize botanical gardens as a partners. This paper investigates the implementation of targets 14 and 15 GSPC in Brazilian botanic gardens specially in education and awareness about plant diversity and trained people. A survey was carried out on the institutional websites of 21 gardens registered in the National System of Botanical Gardens Registration to identify actions that follow the guidelines of these two targets. Websites outdated, difficult access and lack online resources for the public shows us that internet tools are poorly used to divulgation. The target 14's activities performed in most gardens are educational visits and environmental interpretation and explore collections in situ and ex situ from representative species of regional flora. Trained people is held in all gardens but some stand out as important research centers and graduate programs. Despite the efforts Brazilian botanical gardens need improve the public communication and develop strategies to measure the targets progress.


2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Tanja Stratmann ◽  
Karline Soetaert ◽  
Chih-Lin Wei ◽  
Yu-Shih Lin ◽  
Dick van Oevelen

Abstract Sediment community oxygen consumption (SCOC) rates provide important information about biogeochemical processes in marine sediments and the activity of benthic microorganisms and fauna. Therefore, several databases of SCOC data have been compiled since the mid-1990s. However, these earlier databases contained much less data records and were not freely available. Additionally, the databases were not transparent in their selection procedure, so that other researchers could not assess the quality of the data. Here, we present the largest, best documented, and freely available database of SCOC data compiled to date. The database is comprised of 3,540 georeferenced SCOC records from 230 studies that were selected following the procedure for systematic reviews and meta-analyses. Each data record states whether the oxygen consumption was measured ex situ or in situ, as total oxygen uptake, diffusive or advective oxygen uptake, and which measurement device was used. The database will be curated and updated annually to secure and maintain an up-to-date global database of SCOC data.


1994 ◽  
Vol 375 ◽  
Author(s):  
G. Ritter ◽  
B. Tillack ◽  
M. Weidner ◽  
F. G. Böbel ◽  
B. Hertel

AbstractChemical Vapor Deposition of Si1-x Gex – films on Si (100) and of polycrystalline Si1-x Gex, layers on SiO2 – coated substrates have been performed at a pressure of 200 Pa in the temperature range of 500°C – 800°C, correspondingly. To observe the growth process and to characterize the growing thin films at deposition conditions an optical reflection interferometer (PYRITIERS) has been used. Comparing the data obtained at growth temperature with ex- situ measurements by spectroscopic ellipsometry the temperature dependence of optical constants of SiGe films have been evaluated. The reflectivity measurements during the deposition process allow to study the quality of the heteroepitaxial film, even in the initial stage of epitaxial growth.


2021 ◽  
Vol 16 (12) ◽  
pp. 24-34
Author(s):  
V. S. Goleshchikhin

The quality of legal and technical elaboration of amendments to the Constitution of the Russian Federation, approved by the all-Russian vote on July 1, 2020, does not correspond to the level of the Basic Law. Oddly enough, the constitutional legislator ignored a number of basic technical means, rules and methods of legal technique. Thus, the constitutional amendments were drafted without taking into account the requirements of the structural organization of the legal act, namely: many new norms were included in inappropriate articles, the transitional provision on "resetting the deadlines" was duplicated in the main text of the Constitution. The authors of the amendments abandoned criteria of efficiency and compactness of legislative norms, having included an identical set of restrictions in nine articles of the Constitution in relation to various categories of officials. The text does not meet the requirement for uniformity of legal regulation, legal structures, the unity, simplicity and brevity of terminology: the scope of constitutional restrictions for various categories of officials differs somewhat without any objective reasons; there is no uniformity in the issue of the possibility of establishing additional requirements for officials by laws, “bifurcation” of the titles for senators (who in Chapter 9 of the Constitution are still referred to as members of the Federation Council). Insufficient attention to the requirement of consistency of legal norms has led to the creation of a new contradiction between Art. 71 and 72 of the Constitution of the Russian Federation. Amendments also have a number of other legal and technical defects. Such serious and numerous defects in the legal technique of amendments to the Constitution of the Russian Federation became a natural result of a steady decline in the quality of federal legislation that has lasted for a long time. Constitutional amendments clearly demonstrate an insufficient level of legal culture in our country, which sharply raises the question of a radical improvement in the quality of legal technology, and legislative technology in particular.


2018 ◽  
Vol 19 (2) ◽  
pp. 365-370
Author(s):  
Stefan Bruns ◽  
Christina Peppler

Abstract Natural swimming pools (NSP) have become more popular in the past 20 years, both for private and public use, but their hygienic status remains a matter of discussion. Elimination rates in NSP are well defined for Escherichia coli, enterococci and Pseudomonas but a lack of knowledge exists regarding elimination rates in NSP concerning the parasitic protozoans Giardia and Cryptosporidium. First studies indicate that in-situ zooplankton filtration proved to reduce these protozoans efficiently: the in-situ elimination of Cryptosporidium is dependent on the population of zooplankton. In the 50% percentile the elimination rate is four times faster than in the chlorinated pool. The ex-situ elimination of Cryptosporidium in an NSP is approximately 10% faster than in a chlorinated pool. In ex-situ treatment of NSP the elimination rate reached 2 log-steps versus 1 log-step in chlorinated pools. For the further development of NSP for the best possible hygiene and health status some elementary questions, stated in this paper, will have to be solved in the next years or decades. This work describes the in-situ (water treatment inside the pool) and ex-situ water treatment (water treatment via external water treatment plants) of NSP, and the influence of zooplankton in existing NSP on the elimination rate of Cryptosporidium and Giardia.


Author(s):  
Dhananjay Kulkarni ◽  
Dr.Renuka Shahaji Pawar ◽  
Ruchita Raghunath Kudale

Since ancient times, various plants are being traditionally used, as medicine throughout the world. These plants are cultivated as well as collected from wild. Some important medicinal plants, which have source of wild, are difficult for collection. The best way to provide the plants needed for medicinal purposes is to cultivated rather than collecting them from wild. Now a days, some medicinal species are in risk of disappearing due to man-made and natural calamities. So there is need of conservation of medicinal plants to  maintain  sustainable development  by  protecting  and  using  biological resources  in  ways  that  do  not  diminish  the  world’s variety  of  genes , species, habitats  and  ecosystems. Medicinal plants can be cultivated by cutting, layering, grafting and budding and conservation mainly included activities like collection, propagation, characterization, evaluation and eradication,  storage  and  division. On the other hand, some modern techniques have been also established for the better growth and maintenance of medicinal plants such as In-Situ & Ex-Situ conservation, Germplasm technique, cryopreserpation technique, tissue culture technique. This review gives information about various cultivation methods to reduces misidentification and adulteration of medicinal herbs and also shows importance of modern techniques of conservation, management and sustainable utilization of medicinal plants for human health care. This information will definitely useful for quality of herbal medicinal products and reduced uncertain therapeutic effects.


2021 ◽  
Vol 2 (44) ◽  
pp. 11-11
Author(s):  
Alexander Saakian ◽  
◽  

Russian botanical gardens are actively involved in the conservation of rare and endangered plants. They pay special attention to the species included in the Red Book of the Russian Federation. At present, 377 species of higher plants are cultivated in living collections of botanical gardens out of 514 species presented in the Red Book of Russia, which is 73%. Thus, the Russian Federation has practically met the requirement of goal 8 of the Global Strategy for Plant Conservation. The vast majority of rare plant species are represented by samples in the collections of many botanical gardens and the reliability of their protection under cultural conditions is beyond doubt. In the Main Botanical Garden of the Russian Academy of Sciences, an in vitro collection of rare and endangered plants is preserved, including 82 species, which is 17.3% of the total number of angiosperms included in the Red Book of the Russian Federation. As a result of many years of research, the features of the cultivation and preservation of ex situ plants belonging to different families have been revealed. The main methodological aspects at the stages of obtaining a sterile culture, micropropagation proper and long-term deposition are reflected. The compositions of nutrient media and cultivation factors were optimized for slowed growth of explants of the studied cultures and preservation of their viability. Keywords: RARE AND ENDANGERED PLANT SPECIES, RED BOOK OF THE RUSSIAN FEDERATION, EX SITU CONSERVATION, LONG-TERM IN VITRO CONSERVATION


DEPIK ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 335-343
Author(s):  
Luri Anita Vanri ◽  
Adriman Adriman ◽  
Muhammad Fauzi

Siak River is one of the biggest rivers and the deepest in Riau Province in Indonesia with its 20-30 depth and depth 370 kilometers. The Siak River used for bathing, washing, dumping industrial palm oil, plantation, domestic waste, and port so it has an impact on water quality changing. This study analyzed the water quality and distribution spatial physical and chemical parameters the river around in Pekanbaru city, using Principal Component Analysis (PCA), this study used laboratory in situ and ex situ water quality measurement instruments. Water sampling each station done three times in two weeks during October to November 2019. The results obtained from this study shows the water quality of these 6 stations in the category of bad and the water quality from headwaters to downstream river influenced by organic parameter as a dominant pollutant. The correlation of water quality characteristic was 74.4% main factor 1 (F1) 47.4% and main factor 2 (F2) 26.7% with main characteristics fecal coliform, phosphate, and nitrate. Grouping these characteristics through a dendrogram showed three levels of relationship based on the characteristic parameter. The first group stands for station 1,2, and 4 have higher brightness and Dissolved oxygen (DO) parameters than other stations. The second group stands for stations 3 and 5 that have relatively high in parameter phosphate and nitrate. The third group is station 6 (river estuary) which results in shows high of fecal coliform proportional to pollution. The study can be concluded that three groups heavily contaminated. Each group has different parameters that show influence upland and waters activities.Keywords: Distribution of spatial, The quality of water, Siak River, Physical and Chemical Parameters, PCA ABSTRAKSungai Siak merupakan salah satu sungai terbesar di Provinsi Riau dan terdalam di Indonesia, dengan kedalaman sekitar 20-30 meter dan panjang 300 kilometer. Sungai siak masih dimanfaatkan oleh masyarakat sebagai sarana Mandi Cuci Kakus (MCK), tempat buangan limbah industri kelapa sawit, perkebunan, rumah tangga dan pelabuhan, sehingga berdampak pada perubahan kualitas perairan. Penelitian dilakukan untuk menganalisa kualitas dan distribusi spasial karateristik fisik-kimia perairan Sungai Siak di sekitar Kota Pekanbaru, dengan menggunakan Principal Component Analysis (PCA). Kajian menggunakan instrument pengukuran kualitas air in situ dan ex situ di laboratorium. Pengambilan sampel air pada masing-masing stasiun dilakukan sebanyak tiga kali setiap dua minggu selama bulan Oktober hingga November 2019. Hasil yang diperoleh dari kajian ini adalah kualitas air di keenam stasiun masuk dalam katagori buruk dan mengalami penurunan kualitas dari hulu ke hilir yang disebabkan bahan organik. Korelasi karakteristik kualitas air sebesar 74,3%, faktor utama 1 (F1)  47,4% dan faktor utama 2 (F2) 26,7% dengan penciri utama fecal coliform, fosfat dan nitrat. Pengelompokan stasiun pada dendogram klarifikasi hierarki menunjukkan adanya tiga tingkat hubungan kekerabatan berdasarkan parameter pencirinya. Kelompok satu terdiri dari stasiun 1, 2 dan 4 memiliki hasil relatif tinggi pada parameter kecerahan dan oksigen terlarut (DO) dibandingkan dengan stasiun lainnya. Kelompok dua terdiri dari stasiun 3 dan 5 memiliki hasil relatif tinggi pada paramter nitrat dan fosfat dibandingkan dengan stasiun lainnya. Kelompok tiga adalah stasiun 6 (muara sungai sail) dengan parameter fecal coliform relatif tinggi yang berbanding lurus dengan tingkat pencemarannya. Berdasarkan hasil kajian dapat disimpulkan bahwa tiga kelompok sama-sama tercemar berat, namun masing-masing kelompok memiliki perbedaan parameter pencirinya yang memperlihatkan pengaruh berbagai aktifitas di darat maupun di perairan itu sendiri.Kata kunci: Distribusi spasial, Kualitas air, Sungai Siak, Parameter fisika dan kimia, PCA


1989 ◽  
Vol 146 ◽  
Author(s):  
S.S. Kim ◽  
D.V. Tsu ◽  
G. Lucovsky ◽  
G.G. Fountain ◽  
R.J. Markunas

ABSTRACTThis paper describes the key process steps in the low temperature, <300ºC, formation of device quality Si/SiO2 interfaces employing oxide deposition by Remote Plasma-Enhanced Chemical Vapor-Deposition (Remote PECVD). The quality of the Si/SiO2 interface correlates with the degree of surface reconstruction that is controlled by ex-situ wet cleaning and in-situ Rapid Flash Heating. Electronic properties of the MOS structure also vary with the deposited oxide thickness, independent of the initial surface quality.


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