scholarly journals Selection of Cultivars for Direct Seeding in Rice Based on the Development of Root System Analysis

10.5109/24246 ◽  
1998 ◽  
Vol 43 (1/2) ◽  
pp. 31-37
Author(s):  
Jong Gun Won ◽  
Yuuiti Hirahara ◽  
Tomohiko Yoshida
2021 ◽  
pp. 133-149
Author(s):  
Maryna Kolisnyk

The subject of study in the paper is the analysis of technologies, architectures, vulnerabilities and cyberattacks, communication patterns of smart objects, messaging models, and Internet of Things (IoT) / Web of Things (WoT) protocols for solving applied problems of critical and non-critical systems. The goal is to develop a method for selecting messaging models and application-level protocols in non-critical and critical multi-level IoT/WoT systems, provided that the type of access to intelligent objects is initially determined by the initial data, as well as analysis of vulnerabilities and attacks using these protocols. Objectives: to formalize the procedure for choosing communication protocols for IoT/WoT systems; analyze possible vulnerabilities of communication protocols; develop a method for selecting communication protocols for given initial data, depending on the selected type of communication template for smart objects; check practically the proposed method. The methods of research are methods of system analysis. The following results were obtained. The analysis of the features of communication protocols is conducted by comparing the main interrelated characteristics of IoT/WoT, the results of which are presented in the form of a table. A method has been developed for selecting communication protocols, depending on the selected type of communication template. The analysis of possible vulnerabilities of communication protocols and possible attacks using these protocols is conducted. The author has tested the method using the example of a corporate system (Smart House) based on the WoT concept. Findings. The scientific novelty of the results obtained is as follows: the analysis conducted in the paper shows that currently there is no unified approach to the choice of a messaging model and application-level protocols for building IoT/WoT, depending on the selected type of communication template for smart objects. The method for selecting communication protocols for the given conditions (for each IoT system its interaction pattern will correspond, depending on which components interact with each other), improved by the authors of the paper, makes it possible to simplify the task of using separate protocols for given IoT systems, considering vulnerabilities of protocols.


2008 ◽  
Vol 5 (3) ◽  
pp. 395-398
Author(s):  
Baghdad Science Journal

Arbuscular mycorrhizal fungi and sulphur foam added either at direct seeding or at transplanting decreased the effects of nematode (Meloidogyne javanica) on eggplant growth, and improved plant health. Experiments were conducted to study the possible interactions between the Mycorrhizal fungi (Glomus mossae and Gigaspora spp.) and sulphur foam to control M. javanica on eggplant at seed or seedling stage. Experiment at seed stage treated with Mycorrhiza or sulphur foam alone or together stimulated the growth and reduced Nematode infestation significantly. Treated plant at seedling stage increased plant growth and reduced the number of galls /gm of root system. The interaction between Mycorrhiza and sulpher foam treatments was not significant.


2009 ◽  
Vol 0 (1(9)) ◽  
pp. 5-11
Author(s):  
В. В. Скорик ◽  
Волод. В. Скорик ◽  
Н. В. Симоненко ◽  
О. П. Скорик

2020 ◽  
Vol 26 (3) ◽  
pp. 356-366
Author(s):  
Stella Áurea Cristiane Gomes da Silva ◽  
João Carlos Cezar de Albuquerque Filho ◽  
Simone Santos Lira Silva ◽  
Ana Cecília Ribeiro de Castro ◽  
Vivian Loges

Abstract The selection of a genotype for lawn use must consider the plant survival rate and its soil covering ability, which is directly influenced by the growth of stolons and rhizomes. This study aimed to evaluate the growth and development of Paspalum accession plugs for turfgrass establishment. Plugs of six prostrate growth accessions of Paspalum lepton (PL 01), P. notatum (from PN 01 to PN 06) and Zoysia japonica (ZJ 01), which was used as the control treatment, were planted adding up to 7 treatments. At 63 days after planting, the survival rate, the number of shoots, the expansion capacity, plant height and soil coverage rate were evaluated. Moreover, at 72 days after planting, fresh and dry leaf, root, rhizome and/or stolon biomass, as well as root length were evaluated. Plugs of PL 01 presented the highest values regarding the number of shoots, the expansion capacity, soil coverage and the development of the root system with the largest biomass production. PL 01 and PN 05 along with ZJ 01 presented a high soil coverage rate and all the P. notatum (PN) accessions together with ZJ 01 maintained a lower plant height, but with a length root system higher than the control treatment ZJ 01. The P. lepton (PL 01) and P. notatum (PN 05) accessions can be recommended for turfgrass establishment using plug propagation methods.


HortScience ◽  
2010 ◽  
Vol 45 (8) ◽  
pp. 1146-1149 ◽  
Author(s):  
Reut Niska ◽  
Martin Goldway ◽  
Doron Schneider

Loquat (Eriobotrya japonica Lindl.), a member of the Rosaceae, carries the RNase-dependent gametophytic self-incompatibility fertilization system. Analysis of S-RNase-allele content in the commercial loquat cultivars Avri, Yehuda, and Akko 1 revealed that each of them contains one different S-RNase allele—S2, S3, and S4, respectively, and one that they all share, S6. Although all four S-alleles were isolated in this work, only S6 was found to be novel. Amino acid similarity between the partial sequence of S6-RNase and other known loquat RNases (S1 to S4) ranged between 62% and 65% with highest similarity (83%) to the S110-allele of European pear (Pyrus communis). Determination of S-RNase-allele content in progeny of ‘Avri’, ‘Yehuda’, and ‘Akko 1’, obtained in an open-pollinated, mixed-cultivar orchard, revealed that all of the progeny derived from self-fertilization contained the S6 haplotype, indicating that a mutation in the S6 locus is responsible for the self-fertilization. However, sequencing of most of the S6-RNase gene (from C1 to C5) did not reveal any mutation and the alignment of the deduced amino acid sequence showed that it has the expected S-RNase primary and tertiary structural organization. Nonetheless, because it is apparent that the S6-RNase allele is linked to the self-compatibility trait, it could serve as a marker for early selection of self-compatible loquat cultivars.


2019 ◽  
pp. 103-109
Author(s):  
О. С. Юрченко

The orientation to sustainable development of enterprises necessitates the formation of effective accounting and analytical system of profitability management. In this regard, the article is focused on the disclosure of priority areas for developing of theoretical and methodological foundations for formation accounting and analytical support for profitability management. The purpose of the research is the disclosure of current problems and priority areas of the formation of accounting and analytical support for the management of profitability of enterprises. The subject of the research is the theoretical and methodological foundations regarding the formation of the accounting and analytical system in the management of the profits of the enterprises. The object of research - the process of selection of priorities of accounting and analytical system in managing the profitability of enterprises. The methods, used in the research are scientific knowledge, induction, system analysis and conceptual synthesis. The hypothesis was assumption, in the conditions of increasing financial position of business entities, it is necessary the reorientation of the accounting and analytical system in order to identify the influence of factors on profits, reserves and ways of their mobilization for increasing the profitability of enterprises. The statement of basic materials. Based on the results of the research, the preconditions and problems of the development of the conceptual positions of the accounting and analytical support are determined and the ways of their solution are outlined. It is substantiated that the profit depends on the choice of methods of enterprise accounting policy and assessment procedures. It is proved that strategic management accounting is a component of the accounting and analytical system in managing profitability of enterprises. The sequence of formation of the concept of accounting and analytical support for profitability management of enterprises is disclosed. The originality and practical significance of the research is the disclosure of areas for developing of theoretical and methodical foundations of formation of the accounting and analytical system in the management of profitability of enterprises. Conclusions of the research. Introduction in practice of a strategically oriented accounting and analytical system provides the opportunity to assess the internal capacity of the formation of profitability of enterprises, on the one hand, and, on the other hand, the opportunity of generating the value of the enterprise for the future reserves.


2019 ◽  
Vol 14 (4) ◽  
pp. 437-452
Author(s):  
Svetlana A Kabanova ◽  
Andrey N Kabanov ◽  
Ardak A Khasenov ◽  
Matvey A Danchenko

Natural and climatic conditions of the green zone of Nur-Sultan (Kazakhstan) are unfavorable for tree and shrub species due to low soil fertility, sharply continental climate and other factors. The purpose of the research was to choose an assortment of stable introducents for Nur-Sultan green zone. The monitoring of growth and condition of artificial plantations included the selection of an assortment of stable coniferous introducents. The objects of research were coniferous introducents, which were planted in 2011 as container annual seedlings and three-year-old seedlings with open root system. According to the results of observations of conservation, taxation indicators and condition of artificial plantations, it was revealed that for the soil and climatic conditions of the research region, Picea nigra and Picea sibirica turned out to be the most adapted. Quercus robur was also characterized by good growth, but in the first years after planting, it was significantly damaged by late spring frosts and rodent ingestion. Larix sibirica , despite the fact that most of its plants died in the first years after planting, has adapted to soil and climatic conditions now and grows well enough and has a satisfactory condition. The safety of introduced plants planted with annual seedlings with a closed and open root system was practically the same and at the age of 8 it was 62.6 and 64.9%, respectively. It was revealed that it is better to plant crops with older seedlings (3-4 years old), because cultivation of annual seedlings with closed root system requires large financial and labor investments due to prolonged manual care. Therefore, to create artificial plantations in the green zone of Nur-Sultan, Picea sibirica , Picea nigra and Quercus robur can be recommended. When growing them, it is necessary to carry out thorough agro-technical cares and protection from rodents.


2018 ◽  
Vol 45 (4) ◽  
pp. 400 ◽  
Author(s):  
Rongli Shi ◽  
Astrid Junker ◽  
Christiane Seiler ◽  
Thomas Altmann

Root systems architecture (RSA) and size properties are essential determinants of plant performance and need to be assessed in high-throughput plant phenotyping platforms. Thus, we tested a concept that involves near-infrared (NIR) imaging of roots growing along surfaces of transparent culture vessels using special long pass filters to block their exposure to visible light. Two setups were used to monitor growth of Arabidopsis, rapeseed, barley and maize roots upon exposure to white light, filter-transmitted radiation or darkness: root growth direction was analysed (1) through short-term cultivation on agar plates, and (2) using soil-filled transparent pots to monitor long-term responses. White light-triggered phototropic responses were detected for Arabidopsis in setup 1, and for rapeseed, barley and maize roots in setups 1 and 2, whereas light effects could be avoided by use of the NIR filter thus confirming its suitability to mimic darkness. NIR image-derived ‘root volume’ values correlated well with root dry weight. The root system fractions visible at the different pot sides and in different zones revealed species- and genotype-dependent variation of spatial root distribution and other RSA traits. Following this validated concept, root imaging setups may be integrated into shoot phenotyping facilities in order to enable root system analysis in the context of whole-plant performance investigations.


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