scholarly journals Propagation by Stem Cuttings of Tropaeolum pentaphyllum Lam. (Crem): An Alternative for Production of Seed Tubers

2021 ◽  
pp. 84-90
Author(s):  
Júlio Tagliari Balestrin ◽  
Tiago Lodi de Souza ◽  
Alan Serafini Betto ◽  
Daniela da Silva ◽  
Juliana Marcia Rogalski
Keyword(s):  
Experimental Design ◽  
Analysis Of Variance ◽  
Tuber Formation ◽  
Stem Cuttings ◽  
Middle Portion ◽  
Seed Tubers ◽  
Controlled Conditions ◽  
Short Period ◽  
The Future

The herbaceous vine Tropaeolum pentaphyllum Lam. (Tropaeolaceae), popularly known as crem, has great potential for use, especially its tubers. However, there is still a lack of studies regarding this species. The objective of this study was to test the viability of propagation by stem cuttings for the production of T. pentaphyllum seed tubers. Two experiments were carried out in a greenhouse under controlled conditions. In both experiments, experimental design was completely randomized. In the first one, five treatments were evaluated (stem cuttings with 10, 15, 20, 25, and 30 cm) with three replicates, each one with 10 stem cuttings. In the second experiment, three treatments were evaluated (stem cuttings positions: apical, middle and basal), with four replications, each one with 10 stem cuttings. Data were submitted to analysis of variance (ANOVA) and the means were compared by Tukey’s test (p < 0.05). Stem cuttings with 15 cm length had the highest rate of tuber formation (20.0%) and produced tubers with highest mass (3.2 g). Cuttings from the middle portion of the stem had the highest rooting (52.5%) and tuber formation (45.0%) rates. Thus, cuttings with 15 cm length from the middle portion of the stem are indicated for propagation by cuttings of T. pentaphyllum. Considering the potential for the use of this species in the future, the results found in this study are very important, since the propagation by cuttings would enable the production of a large amount of seed tubers in a short period of time.

scholarly journals Control of Second-Generation European Corn Borer, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 212-212
Author(s):  
John Witkowski ◽  
Jerry Echtenkamp
Keyword(s):  
Experimental Design ◽  
Analysis Of Variance ◽  
European Corn Borer ◽  
Second Generation ◽  
Middle Portion ◽  
Corn Borer ◽  
Egg Masses ◽  
Dixon County ◽  
Paper Disc

Abstract Foliar treatments of registered and non-registered insecticides for second-generation European corn borer control were applied to irrigated corn plots in Dixon County, NE on 12 Aug. Liquid-formulated insecticides were applied with a Hahn Hi-Boy calibrated to deliver 17 gpa at 30 psi. Four d prior to application, 6 black-headed egg masses on paper disc were pinned to the middle portion of 10 marked com plants in each replicate. Experimental design was RCB with 4 replications. On 25 Sep, the infested plants were dissected from tassel to ground, examined and the number of corn borer larvae recorded. Results were analyzed using analysis of variance procedures. Treatment means were separated using LSD procedures.

scholarly journals (426) Evaluation of Pregerminative Treatmentsin Soursop (Annona muricata L.) Seeds

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1023A-1023
Author(s):  
Juan Manuel González Gonzalez ◽  
Salvador Guzman Gonzalez ◽  
Arnoldo Michel Rosales ◽  
Francisco Radillo Juarez ◽  
Marcelino Bazan Tene ◽  
...  
Keyword(s):  
Experimental Design ◽  
Gibberellic Acid ◽  
Analysis Of Variance ◽  
Experimental Unit ◽  
Annona Muricata ◽  
Short Period ◽  
And Control

The most common spread of this species is sexual or by seed. In normal conditions, the germination of the seeds of Anonaceae can increase with pregerminative treatments prior to sowing. The objective was to determine the best pregerminative treatment to increase germination of soursop seeds. This study was carried out under the the dry, tropic conditions of Tecomán, Colima, Mexico. The experimental design was completely random with 12 treatments: 1) dip in water for 24 hours; 2) dip in water for 24 hours + gibberellic acid (GA3) at 350 ppm; 3) dip in water for 24 hours + GA3 at 500 ppm; 4) dip in water for 24 hours + GA3 at 1000 ppm; 5) mechanical scarification; 6) dip in water for 24 hours + mechanical scarification; 7) mechanical scarification + GA3 at 350 ppm; 8) mechanical scarification + GA3 at 500 ppm; 9) mechanical scarification + GA3 at 1000 ppm; 10) GA3 at 350 ppm; 11) GA3 at 500 ppm; and 12) GA3 at 1000 ppm; and control. There were four repetitions with 10 seeds in each experimental unit. The evaluated variables were the percentage of germination and the number of days from planting to emergence. To record results, analysis of variance and Tukey's test averages were used. The major percentage of germination resulted from the seeds treated with soaking in water for 24 hours plus GA3 to 350 ppm, dip in water for 24 hours plus scarification and GA3 at 1000 ppm, and equalized statistically to the control. For the number of days from planting to emergence, the treatment with mechanical scarification + GA3 at 500 ppm was statistically better. The use of gibberellic acid with mechanical scarification diminishes the dormancy of soursop seeds, producing plants in a relatively short period.

China, the UN, and Human Protection

2020 ◽  
Author(s):  
Rosemary Foot
Keyword(s):  
United Nations ◽  
Public Goods ◽  
World Order ◽  
Active Engagement ◽  
Fair Share ◽  
Global Order ◽  
The Core ◽  
Short Period ◽  
The Future ◽  
The United Nations

Over a relatively short period of time, Beijing moved from passive involvement with the UN to active engagement. How are we to make sense of the People’s Republic of China’s (PRC) embrace of the UN, and what does its engagement mean in larger terms? Is it a ‘supporter’ that takes its fair share of responsibilities, or a ‘spoiler’ that seeks to transform the UN’s contribution to world order? Certainly, it is difficult to label it a ‘shirker’ in the last decade or more, given Beijing’s apparent appreciation of the UN, its provision of public goods to the organization, and its stated desire to offer ‘Chinese wisdom and a Chinese approach to solving the problems facing mankind’. This study traces questions such as these, interrogating the value of such categorization through direct focus on Beijing’s involvement in one of the most contentious areas of UN activity—human protection—contentious because the norm of human protection tips the balance away from the UN’s Westphalian state-based profile, towards the provision of greater protection for the security of individuals and their individual liberties. The argument that follows shows that, as an ever-more crucial actor within the United Nations, Beijing’s rhetoric and some of its practices are playing an increasingly important role in determining how this norm is articulated and interpreted. In some cases, the PRC is also influencing how these ideas of human protection are implemented. At stake in the questions this book tackles is both how we understand the PRC as a participant in shaping global order, and the future of some of the core norms that constitute global order.

scholarly journals On the 2PN Pericentre Precession in the General Theory of Relativity and the Recently Discovered Fast-Orbiting S-Stars in Sgr A*

Universe ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 37
Author(s):  
Lorenzo Iorio
Keyword(s):  
General Theory ◽  
Present Author ◽  
Theory Of Relativity ◽  
General Theory Of Relativity ◽  
Orbital Elements ◽  
Analytical Expression ◽  
Potential Interest ◽  
Short Period ◽  
The Future ◽  
Sgr A

Recently, the secular pericentre precession was analytically computed to the second post-Newtonian (2PN) order by the present author with the Gauss equations in terms of the osculating Keplerian orbital elements in order to obtain closer contact with the observations in astronomical and astrophysical scenarios of potential interest. A discrepancy in previous results from other authors was found. Moreover, some of such findings by the same authors were deemed as mutually inconsistent. In this paper, it is demonstrated that, in fact, some calculation errors plagued the most recent calculations by the present author. They are explicitly disclosed and corrected. As a result, all of the examined approaches mutually agree, yielding the same analytical expression for the total 2PN pericentre precession once the appropriate conversions from the adopted parameterisations are made. It is also shown that, in the future, it may become measurable, at least in principle, for some of the recently discovered short-period S-stars in Sgr A*, such as S62 and S4714.

scholarly journals The Role of Religious Norms On Selecting The Islamic Bank

2015 ◽  
Vol 7 (1) ◽  
pp. 31-44 ◽  
Author(s):  
Hardius Usman
Keyword(s):  
Quantitative Analysis ◽  
Experimental Design ◽  
Analysis Of Variance ◽  
Exploratory Study ◽  
Islamic Banking ◽  
Chi Square ◽  
Banking Services ◽  
Contemporary Group ◽  
Chi Square Test

The aims of this study are to examine Muslim’s religious norms regarding to their belief on  the  law  of  the  prohibition  of  bank  interest,  and  to  investigate  the  effect  of religius norms on customers’ decision in using the Islamic banking services. This study employs natural experimental design with Analysis of Variance (ANOVA), and Pearson Chi-Square Test. The exploratory study also conducted to support the quantitative analysis. The results show that the religious norms among Muslims classified into two categories, i.e: traditional and contemporary group and the religious norm of the Muslim have significant affects on the decision in using the Islamic banks.DOI:10.15408/aiq.v7i1.1356

scholarly journals Vector Competence: What Has Zika Virus Taught Us?

Viruses ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 867 ◽  
Author(s):  
Sasha R. Azar ◽  
Scott C. Weaver
Keyword(s):  
Experimental Design ◽  
Zika Virus ◽  
Vector Competence ◽  
Large Body ◽  
Large Data ◽  
Mosquito Vector ◽  
Zikv Infection ◽  
Data Set ◽  
Short Period ◽  
Meta Analyses

The unprecedented outbreak of Zika virus (ZIKV) infection in the Americas from 2015 to 2017 prompted the publication of a large body of vector competence data in a relatively short period of time. Although differences in vector competence as a result of disparities in mosquito populations and viral strains are to be expected, the limited competence of many populations of the urban mosquito vector, Aedes aegypti, from the Americas (when its susceptibility is viewed relative to other circulating/reemerging mosquito-borne viruses such as dengue (DENV), yellow fever (YFV), and chikungunya viruses (CHIKV)) has proven a paradox for the field. This has been further complicated by the lack of standardization in the methodologies utilized in laboratory vector competence experiments, precluding meta-analyses of this large data set. As the calls for the standardization of such studies continue to grow in number, it is critical to examine the elements of vector competence experimental design. Herein, we review the various techniques and considerations intrinsic to vector competence studies, with respect to contemporary findings for ZIKV, as well as historical findings for other arboviruses, and discuss potential avenues of standardization going forward.

Discovering the atmospheres of hot Jupiters

2019 ◽  
Vol 15 (S354) ◽  
pp. 467-472
Author(s):  
P. Wilson Cauley
Keyword(s):  
Detailed Characterization ◽  
Hot Jupiters ◽  
Short Period ◽  
The Future ◽  
To Come ◽  
Host Stars

AbstractHot Jupiters are an extraordinary class of exoplanets, orbiting their host stars with periods of hours to a few days. Some of these objects have day-side temperatures approaching photospheric temperatures of late K-type stars. I will give an overview of how we characterize the atmospheres of these fascinating objects and some the more recent exciting results to come from ground and space-based telescopes, as well as what the future holds for detailed characterization of short-period exoplanet atmospheres.

Sign in / Sign up

Export Citation Format

Share Document