scholarly journals Evaluation De Quatre Cultivars De Niebe (Vigna Unguiculata (L.) Walp.) Pour Leur Resistance Au Deficit Hydrique Et A L’adventice Parasite, Striga Gesnerioides (Willd.) Vatke Au Togo

2018 ◽  
Vol 14 (6) ◽  
pp. 215
Author(s):  
Yorikoume Kondi ◽  
Aziadekey Mawuli ◽  
Banito Agnassim ◽  
Pocanam Yentchabre ◽  
Tozo Koffi
Keyword(s):  
Water Deficit ◽  
Vigna Unguiculata ◽  
Yield Components ◽  
Sub Saharan Africa ◽  
Growth And Yield ◽  
Water Regimes ◽  
Striga Gesnerioides ◽  
Cowpea Cultivars ◽  
Negative Effect ◽  
Sub Saharan

Drought and weed parasite Striga gesnerioides(Willd.)Vatke, are major constraints to cowpea production in sub-Saharan Africa. The purpose of this study was to examine the response of four cowpea (Vigna unguiculata(L.)Walp.)cultivars, VITOCO, VITA5, IT87D-10-10, and IT98K589-2 to water deficit, to a weed parasite S. gesnerioides and to determine the effect of this weed parasite on these cowpea cultivars under water deficit conditions. Pot experiment was conducted in a greenhouse condition under artificial infestation at the Agronomic Experimentation Station of Lomé. The experimental design was a split-split-plot design with three replications of two levels of S. gesnerioides;(presence and absence) in main plot, four water regimes; (periodic watering of 5, 10, 15 and 20 days) in sub-plot, and the cultivars in sub sub-plot. Data were collected on yield components (number of seed per pod, number of pod per plant and seeds weight per plant). Data collected on parasitic plantdate of emergence and its rate of emergence per pot. Water deficit tolerance was evaluated by the rank summation index (RSI).The results showed that the water régimes of 10 and 15 days had significant depressive effect on all yield components. The number of S. gesnerioides emerged per pot ranged from 10.20 (VITOCO) to 48.60 (IT98K589-2). In addition, the infestation of S. gesnerioides showed a significant reduction of all yield components evaluated in all tested cultivars. Therefore, no cultivar proved to be resistant, nor tolerant to S. gesnerioides.The overall rankings of the evaluated cultivars in terms of growth and yield parameters studied revealed that the cultivar IT98K-589-2 showed the best adaptive response in drought condition. The results also revealed that, the significant negative effect of water deficit on the seeds weight per plant is exacerbated by the S. gesnerioides infestation.

scholarly journals The genome of cowpea (Vigna unguiculata [L.] Walp.)

2019 ◽  
Author(s):  
Stefano Lonardi ◽  
María Muñoz-Amatriaín ◽  
Qihua Liang ◽  
Shengqiang Shu ◽  
Steve I. Wanamaker ◽  
...  
Keyword(s):  
Vigna Unguiculata ◽  
Single Molecule ◽  
Warm Season ◽  
Multiple Organ ◽  
Sub Saharan Africa ◽  
Parasitic Weed ◽  
Nutritional Security ◽  
Striga Gesnerioides ◽  
Sub Saharan ◽  
Food And Nutritional Security

ABSTRACTCowpea (Vigna unguiculata [L.] Walp.) is a major crop for worldwide food and nutritional security, especially in sub-Saharan Africa, that is resilient to hot and drought-prone environments. A high-quality assembly of the single-haplotype inbred genome of cowpea IT97K-499-35 was developed by exploiting the synergies between single molecule real-time sequencing, optical and genetic mapping, and a novel assembly reconciliation algorithm. A total of 519 Mb is included in the assembled sequences. Nearly half of the assembled sequence is composed of repetitive elements, which are enriched within recombination-poor pericentromeric regions. A comparative analysis of these elements suggests that genome size differences between Vigna species are mainly attributable to changes in the amount of Gypsy retrotransposons. Conversely, genes are more abundant in more distal, high-recombination regions of the chromosomes; there appears to be more duplication of genes within the NBS-LRR and the SAUR-like auxin superfamilies compared to other warm-season legumes that have been sequenced. A surprising outcome of this study is the identification of a chromosomal inversion of 4.2 Mb among landraces and cultivars, which includes a gene that has been associated in other plants with interactions with the parasitic weed Striga gesnerioides. The genome sequence also facilitated the identification of a putative syntelog for multiple organ gigantism in legumes. A new numbering system has been adopted for cowpea chromosomes based on synteny with common bean (Phaseolus vulgaris).

Information technology and insurance development in Sub-Saharan Africa

2021 ◽  
pp. 026666692110289
Author(s):  
Taiwo Akinlo
Keyword(s):  
Information Technology ◽  
Mobile Phone ◽  
Life Insurance ◽  
Sub Saharan Africa ◽  
Method Of Moment ◽  
African Countries ◽  
Insurance Premiums ◽  
Negative Effect ◽  
Sub Saharan ◽  
Insurance Development

The study examined the relationship between information technology and insurance development in 40 sub-Saharan African countries during the period 2000-2017. The study employed System Generalised Method of Moment for the estimations. Life insurance premiums, non-life insurance premiums and total insurance premiums are used to measure life insurance, non-life insurance and total insurance, respectively. The information technology is measured by mobile phone, fixed telephone and Internet penetrations. The study found that the Internet promotes non-life insurance while its effect on life and total insurance is insignificant. The mobile phone produced a negative effect on life insurance, non-life insurance and total insurance. However, fixed telephone significantly contributed to life insurance, non-life insurance and total insurance. Based on these findings, there is a need for insurers to encourage their client to use information technology tools for insurance activities and also increase their interaction with their customers.

Dividend Policy as a Driver of Corporate Growth in Sub-Saharan Africa: Evidence in Nigeria

2020 ◽  
Vol 4 (2) ◽  
pp. 4-13
Author(s):  
Emmanuel Otitolaiye ◽  
Tunji Siyanbola
Keyword(s):  
Dividend Policy ◽  
Sub Saharan Africa ◽  
Insurance Companies ◽  
Firm Age ◽  
Dividend Payout ◽  
Significant Negative Effect ◽  
Ex Post ◽  
Corporate Growth ◽  
Negative Effect ◽  
Sub Saharan

Dividend policy remains an important topic in modern corporate finance. Researchers, managers, and business owners seek to understand the optimal dividend policy. This study examined dividend policy as a driver of corporate growth in sub-Saharan Africa: evidence in Nigeria. The ex-post facto research design was adopted to analyse how dividend policy spur the growth of active insurance companies in the Nigerian Stock Exchange using secondary data of the sampled firms for 2007 – 2018 while utilising descriptive and inferential (regression) statistics in data analysis. The findings reveal that dividend policy in terms of dividend payout has an insignificant negative effect on corporate growth of insurance companies in Nigeria (?= -8.09E-05, p=0.77; Adjusted R2=0.4093; F(4,139)=3.29; p=0.00 with the controlling effect of efficiency, firm age and leverage which have a significant effect on corporate growth of insurance companies in Nigeria. Specifically, the study reveals that efficiency has a significant negative effect on corporate growth (?=-5.29, p<0.05); while firm age discloses a significant positive influence on corporate growth (?=0.417, p<0.05); as leverage exerts a significant negative effect on corporate growth (?=0.052, p<0.05). Therefore, the study concludes that dividend policy does not significantly drive insurance companies' dividend payout growth. The study recommends that insurance companies' management retain more of their profits, improve their efficiency, and control their leverage to further growth.

scholarly journals The consequences of China's impending economic crisis on global economy

2016 ◽  
Vol 5 (6) ◽  
pp. 24-41
Author(s):  
Mavhungu Abel Mafukata
Keyword(s):  
Economic Crisis ◽  
Global Economy ◽  
Economic Recession ◽  
Chinese Economy ◽  
Sub Saharan Africa ◽  
Economic Practice ◽  
Specific Objective ◽  
The World ◽  
Negative Effect ◽  
Sub Saharan

The main objective of this paper is to predict the consequences of China's impending economic crisis on global economy – with reference to Sub-Saharan Africa (SSA) in particular. The specific objective of this paper is to investigate and explore the increasing dominance of economic practice of China in SSA. China is a critical principal player in the economy of SSA. China's influence and dominance of the SSA economy might have negative effect on SSA in case of any implosion of the Chinese economy. Data were collected from print and electronic sources extracted from the vast body of empirical scholarship of different disciplines on China in SSA.  The results of this paper revealed that China is indeed dominating the economy in SSA. Pointers are that China's economic implosion would have consequences for SSA in the same way as the 2008-2009 global economic recession had around the world. This  paper positively predicts that China's economic and financial implosion remains a possibility, and would impact on SSA.

Economic freedom, competition and bank stability in Sub-Saharan Africa

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Emmanuel Sarpong-Kumankoma ◽  
Joshua Yindenaba Abor ◽  
Anthony Q. Q. Aboagye ◽  
Mohammed Amidu
Keyword(s):  
Economic Freedom ◽  
Banking Sector ◽  
Generalized Method Of Moments ◽  
Sub Saharan Africa ◽  
Bank Stability ◽  
Content Type ◽  
Show Evidence ◽  
Negative Effect ◽  
Sub Saharan ◽  
The Stability

PurposeThis study aims to analyze the potential implications of economic freedom and competition for bank stability.Design/methodology/approachUsing system generalized method of moments and data from 139 banks across 11 Sub-Saharan African (SSA) countries during the period 2006–2012, this study considers whether the degree of economic freedom affects the relationship between competition and bank stability.FindingsThe results show evidence of the competition-fragility hypothesis in SSA banking, but suggests that beyond a setting threshold, increases in market power may also be damaging to bank stability. Financial freedom has a negative effect on bank stability, suggesting that banks operating in environments with greater financial freedom generally tend to be less stable or more risky. The authors also find evidence of a conditional effect of economic freedom on the competition–stability relationship, implying that bank failure is more likely to occur in countries with greater economic freedom, but with low competition in the banking sector.Practical implicationsThe results suggests to policy makers that a moderate level of competition and economic freedom may be the appropriate policy to ensure the stability of banks.Originality/valueThe study provides insight on the competition–bank stability relationship, by providing new empirical evidence on the effect of economic freedom, which has not been previously considered.

scholarly journals HIV/AIDS and Economic Growth: Empirical Evidence from Sub-Saharan Africa

2015 ◽  
Vol 7 (4) ◽  
pp. 30 ◽  
Author(s):  
Danjuma Maijama'a ◽  
Shamzaeffa Samsudin ◽  
Shazida jan Mohd Khan
Keyword(s):  
Economic Growth ◽  
Time Lag ◽  
Hiv And Aids ◽  
Sub Saharan Africa ◽  
Growth Equation ◽  
Solow Model ◽  
African Countries ◽  
Negative Effect ◽  
Per Capita ◽  
Sub Saharan

<p>This study investigates the effects of the HIV and AIDS epidemic on economic growth in 42<br />sub-Saharan African countries using data spanning from 1990-2013. Unlike previous studies,<br />we use a longer data horizon and take the time lag effect of the epidemic’s incubation period<br />that is, after it might have developed to AIDS into consideration in our estimations. We<br />estimated an empirical growth equation within an augmented Solow model and applied the<br />dynamic system GMM estimator. The results suggest that current HIV prevalence rate –<br />associated with rising morbidity, has a negative effect on GDP per capita growth, conversely<br />AIDS – associated with higher mortality in addition to morbidity, increases per capita GDP<br />growth.</p>

scholarly journals Midwifery workforce profile in Limpopo Province referral hospitals

2014 ◽  
Vol 6 (1) ◽  
Author(s):  
Sam T. Ntuli ◽  
Gboyega A. Ogunbanjo
Keyword(s):  
Maternal Mortality ◽  
Registered Nurses ◽  
Maternity Care ◽  
Work Experience ◽  
Limpopo Province ◽  
Sub Saharan Africa ◽  
Cross Sectional ◽  
Referral Hospitals ◽  
Negative Effect ◽  
Sub Saharan

Background: In sub-Saharan Africa including South Africa, maternal mortality rates remain unacceptably high due to a shortage of registered nurses with advanced midwifery diplomas.Objective: To determine the profile of registered nurses (RNs) involved in maternity care in public referral hospitals of the Limpopo Province, South Africa.Method: A cross-sectional descriptive study was conducted in all maternity units of Limpopo’s public referral hospitals. The study population comprised of 210 registered nurses, who became the study sample. Data on their educational profile and work experience in midwifery was analysed using STATA version 9.0.Results: The mean age of the 210 registered nurses was 44.5 ± 9.1 years (range 21 to 62). The majority (152/210; 70%) were 40 years and older, 56% (117/210) had been working for more than 10 years, and 63/210 (30%) were due to retire within 10 years. Only 22% (46/210) had advanced midwifery diplomas, i.e. after their basic undergraduate training. Only six (2.9%) of the RNs providing maternity care in these referral hospitals were studying for advanced midwifery diplomas at the time of the study.Conclusion: This study demonstrated a shortage of registered nurses with advanced midwifery training/diplomas in referral hospitals of the Limpopo Province. This has a potentially negative effect in reducing the high maternal mortality rate in the province.

The corruption-inflation nexus: evidence from developed and developing countries

2016 ◽  
Vol 16 (1) ◽  
Author(s):  
Mohamed Sami Ben Ali ◽  
Seifallah Sassi
Keyword(s):  
North Africa ◽  
Developed Countries ◽  
Sub Saharan Africa ◽  
Asia Pacific ◽  
Inflation Rates ◽  
Negative Effect ◽  
Alternative Techniques ◽  
Sub Saharan ◽  
The Relationship ◽  
Developing And Developed Countries

AbstractThis paper analyzes the relationship between corruption and inflation for a sample of 100 developing and developed countries representing five regions (Americas, Europe, Middle East and North Africa, Sub-Saharan Africa and Asia Pacific) over the period 2000–2012. Various model estimations are carried out using alternative techniques and two indicators of corruption. Our findings provide evidence of a significant and positive relationship between all country corruption measures and inflation. Countries with a corrupted environment and bad governance use seigniorage as a source of revenue which induces higher monetary expansion and therefore higher inflation rates. After controlling for money supply, our results suggest that corruption is affecting inflation via other channels. Our results show also that the negative effect of corruption on inflation is different across subsample countries. The lack of sound and committed institutions in developing and emerging is a key point in explaining these disparities.

Growth and yield of cowpea (Vigna unguiculata L.) cultivars under water Deficit at different growth stages

2017 ◽  
Author(s):  
Magdi A.A. Mousa ◽  
Adel D. Al Qurashi
Keyword(s):  
Water Deficit ◽  
Growth Yield ◽  
Yield Component ◽  
Growth And Yield ◽  
Vegetative Stage ◽  
Growth Stages ◽  
Cowpea Cultivars ◽  
Irrigation Water Use ◽  
King Abdulaziz University ◽  
Different Growth Stages

A field experiment was conducted in 2013 and 2014 at the Agriculture Experimental Station of King Abdulaziz University to study the effects of water deficit treatments at different growth stages on growth, yield and IWUE on cowpea cultivars. Four water deficit treatments were applied T0 (no water deficit), T1 (at vegetative stage), T2 (at flowering and pod setting), T3 (at pod filling), T4 (at vegetative and flowering) and T5 (at flowering and pod filling). The cultivars ‘Balady’ under water deficit T1, T3 and T4 and ‘Cream7’under T1 and T2 produced the highest yield component parameters except number of pods/plant. The highest yield of dry seeds kg/ha was produced by the cultivars ‘Cream7’ under water deficit T1 and T3 and ‘Balady’ under T2. ‘Cream7’ and ‘Balady’ revealed the highest irrigation water use efficiency (IWUE) under water deficit T1, T2 and T4. High seed yield of ‘Balady and ‘Cream7’ can be obtained by applying water deficit at vegetative stage (T1).

Influence of Inorganic Fertilizer (NPK 15:15:15) and Cacao (Theobroma cacao L) Leaf Litter Application Rates on Cowpea (Vigna unguiculata L.) Performance in the Tropics

2020 ◽  
pp. 14-32
Keyword(s):  
Leaf Litter ◽  
Vigna Unguiculata ◽  
Theobroma Cacao ◽  
Yield Components ◽  
Inorganic Fertilizer ◽  
Growth And Yield ◽  
Application Rates ◽  
The Tropics ◽  
Fertilizer Rates ◽  
Theobroma Cacao L

Influence of inorganic fertilizer (NPK 15:15:15) and cacao (Theobroma cacao L.) leaf litter application rates on cowpea (Vigna unguiculata L.) performance in the tropics was studied for 24 months (January, 2017 – December, 2018) at Cocoa Research Institute of Nigeria (CRIN) Ibeku Sub-Station, Umuahia, Nigeria. Three 3 x 3 factorial experiments, each in a Randomized Complete Block Design (RCBD) with three replicates/blocks were used to study the responses of cowpea to three NPK 15:15:15 fertilizer rates 0 kg, 500 kg and 1000 kg ha-1 represented by (Factor F) F0, F1 and F2, respectively, and cocoa leaf litter rates 0 t, 10 t and 20 t ha-1 which were also represented by Lo, L1 and L2 (Factor L), respectively. The results obtained from the study show that the application of either 10 or 20 t ha-1 cocoa leaf litter alone or complementary application of either 10 or 20 t ha-1 cocoa leaf litter plus 500 or 1000 kg ha-1 NPK 15:15:15 fertilizer significantly increased the various cowpea growth and yield components than the fertilizer rates alone. The treatment without fertilizer and leaf litter, i.e. topsoil only (F0L0) gave significantly the least cowpea growth and yield components. The highest values were obtained with the application of 1000 kg ha-1 NPK 15:15:15 fertilizer with 20 t ha-1 cocoa leaf litter (F2L2). The cowpea crop performance in terms of growth, yield and yield components over the study periods, 2017 and 2018 were statistically similar. Therefore, the inclusion of leaf litter has greater potential for improving cowpea yield than when fertilizer was used alone. Leaves are potential sources of valuable nutrients providing a high quality of organic matter, which should be returned to the soil.

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