scholarly journals Several features of growing Colchicum autumnale l. in the urban environment of Tashkent-Uzbekistan

2021 ◽  
Vol 939 (1) ◽  
pp. 012038
Author(s):  
V T Kaysarov ◽  
E T Akhmedov

Abstract For the first time, the collection of autumn colchicum was created at the experimental field site of the Tashkent State Agrarian University. In this paper, the issues of growing conditions for the growth and development of Colchicum autumnale l plant were deeply studied and investigated. It was revealed that the Colchicum autumnale l growth and development largely depend on the size of the corm and the type of soil conditions.

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1311
Author(s):  
Magdalena Chmur ◽  
Andrzej Bajguz

Brassinolide (BL) represents brassinosteroids (BRs)—a group of phytohormones that are essential for plant growth and development. Brassinazole (Brz) is as a synthetic inhibitor of BRs’ biosynthesis. In the present study, the responses of Wolffia arrhiza to the treatment with BL, Brz, and the combination of BL with Brz were analyzed. The analysis of BRs and Brz was performed using LC-MS/MS. The photosynthetic pigments (chlorophylls, carotenes, and xanthophylls) levels were determined using HPLC, but protein and monosaccharides level using spectrophotometric methods. The obtained results indicated that BL and Brz influence W. arrhiza cultures in a concentration-dependent manner. The most stimulatory effects on the growth, level of BRs (BL, 24-epibrassinolide, 28-homobrassinolide, 28-norbrassinolide, catasterone, castasterone, 24-epicastasterone, typhasterol, and 6-deoxytyphasterol), and the content of pigments, protein, and monosaccharides, were observed in plants treated with 0.1 µM BL. Whereas the application of 1 µM and 10 µM Brz caused a significant decrease in duckweed weight and level of targeted compounds. Application of BL caused the mitigation of the Brz inhibitory effect and enhanced the BR level in duckweed treated with Brz. The level of BRs was reported for the first time in duckweed treated with BL and/or Brz.


2009 ◽  
Vol 8 (S2) ◽  
Author(s):  
Colin A Malcolm ◽  
Badria El Sayed ◽  
Ahmed Babiker ◽  
Romain Girod ◽  
Didier Fontenille ◽  
...  
Keyword(s):  

Author(s):  
Md. Maidul Islam ◽  
Sadia Afroze

The main goal of this chapter is to assess knowledge sharing (KS) behavior among Library and Information Science (LIS) professionals and to assess how KS behavior contributes to professional growth and development in Bangladesh. Defining factors may encourage knowledge sharing behavior and can establish an important area of further LIS research. A modified survey questionnaire is developed and used to collect data on professionals' demographic and academic information, perception, attitude, intention, and intrinsic motivation to share knowledge. The authors found a significant relationship between the attitude of professionals toward KS and their intention to share knowledge. It is believed that the findings will help knowledge managers charged with the design of flexible KS system. This is the first time an effort will be made to assess professionals' perception on KS behavior in Bangladesh. The authors feel that this study may encourage the establishment of KS behavior in Bangladesh and beyond.


1992 ◽  
Vol 72 (4) ◽  
pp. 1153-1156 ◽  
Author(s):  
K. J. Kirkland

A 3-yr field experiment was conducted at the Scott Experimental Farm to determine the effect of the growth regulator, triapenthenol, on the growth and development of Argentine canola (Brassica napus L.). Triapenthenol reduced plant height 25–45 cm under optimal growing conditions. Increases in yield, branches and total pods were observed. Application at the bud stage was more effective than earlier treatment in the rosette. It was concluded that triapenthenol application to canola could be a useful management tool, particularly under optimal growing conditions.Key words: Canola, growth regulator, RSW-0411, lodging


2018 ◽  
Vol 7 (3) ◽  
pp. 22 ◽  
Author(s):  
Massimo Pitorri ◽  
Marco Franceschin ◽  
Ilaria Serafini ◽  
Alessandro Ciccòla ◽  
Claudio Frezza ◽  
...  

This paper reports on the modification of two synthetic steps in the usual protocol used for obtaining EMICORON. EMICORON is a benzo[ghi]perylen-diimide, which was synthesized for the first time in our laboratory in 2012, and has shown to have in vivo antitumor activities that interferes with the tumor growth and development using a multi-target mechanism of action. The provided modifications, which involved the reaction times, the reaction conditions, and the work-up procedures, allowed the global yield of the process to be increased from 28% to about 40%. Thus, this new procedure may be more suitable for recovering higher amounts of EMICORON to be used in further preclinical studies.


1997 ◽  
Vol 13 (52) ◽  
pp. 386-395 ◽  
Author(s):  
Jane Plastow

Following Jane Plastow's contextual history of Eritrean theatre in NTQ50, Paul Warwick gave an account in the following issue of its previously undocumented role during the thirty-year Eritrean struggle for independence, describing the efforts of the freedom fighters to create theatre for the first time in a rural context. The Eritrean People's Liberation Front not only deployed theatre as a propaganda weapon, but also recognized its value as an agent for educating the people in matters ranging from women's rights to the benefits of modern medicine and farming methods: and with victory came measures further to stimulate the growth and development of theatre as part of Eritrean culture. Jane Plastow, in this third and concluding article, takes up the story with the invitation issued by the new government to her and her colleagues to initiate the ‘Eritrea Community-Based Theatre Project’, in an attempt both to widen the perspectives of Eritrean actors and to draw upon all relevant traditions, African and European, in developing a popular but distinctive theatre for the people. In addition to her role as director of the project, Jane Plastow is a lecturer at Leeds University, having worked in theatre for some years in a number of other African nations.


1996 ◽  
Vol 33 (3) ◽  
pp. 351-368 ◽  
Author(s):  
D. J. Moot ◽  
A. L. Henderson ◽  
J. R. Porter ◽  
M. A. Semenov

2020 ◽  
pp. 171-178
Author(s):  
Evgeniy Nikolayevich Sechin ◽  
Oleg Anatolyevich Marakaev ◽  
Gavriil Borisovich Gavrilov

For the first time, the phytosterol state of the underground and aboveground organs of the tuberoid species of the orchid Dactylorhiza maculata (L.) Soó (Orchidaceae), which grows in the natural conditions of the Central European part of Russia, was studied using gas chromatography with a mass spectrometric detector. The plant material contains cycloartenol, cycloeukalenol, campesterol, brassicasterin, β-sitosterol, stigmasterol and ergosterol, which was found in underground organs and belong to mycosymbiont. The ergosterol content in the adventitious roots is five times higher compared to the endings of stem root tuberoids. The phytosterols content of the aboveground organs of D. maculata is more diverse than that of the underground organs. The basic sterol of D. maculata is β-sitosterol (60%), which is present in all organs. Also a high amount was noted for cycloartenol (20%), which is absent in the stem. Cycloeukalenol (7%) was found in inflorescences and leaves, campesterol (2%) in inflorescences, brassicasterin (5%) in the adventitious roots, stigmasterol (5%) in the leaves. Differences in the sterol statuses of organs can be explained by the biochemical characteristics of their tissues and the uneven functional significance of the identified compounds for the growth and development of generative individuals of D. maculata in the budding phase. The results obtained indicate the diversity of phytosterol compounds and their uneven content in various organs of the studied plant object.


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