scholarly journals Correlations and path analysis for quantitative characteristics in semi-prostrate cowpea bean genotypes (Vigna unguiculata (L.) Walp)

2020 ◽  
Vol 14 (2) ◽  
pp. 216-223
Author(s):  
Hermes Araméndiz-Tatis ◽  
Miguel Espitia-Camacho ◽  
Carlos Cardona-Ayala
Keyword(s):  
Grain Yield ◽  
Path Analysis ◽  
Low Income ◽  
Positive Impact ◽  
Caribbean Region ◽  
Environment Interaction ◽  
Cowpea Cultivars ◽  
Quantitative Characters ◽  
Negative Effect ◽  
Positive Direct

The cowpea is the most important legume in the Colombian Caribbean, due to its positive impact on the food and nutritional security of low-income rural families. It is cultivated by small producers, but its yields per hectare do not exceed 600 kg, due to the use of obsolete cultivars. The objective of the research was to estimate the correlations between seven quantitative characters and the path analysis between grain yield and six quantitative characters, with the results of the evaluation of 10 genotypes of semi-prostrate growth habit, high grain yield, grown in eight environments of the humid and dry tropics of the Colombian Caribbean region, under the randomized complete blocks design, with four repetitions. Significant differences between environments, genotypes and genotype x environment interaction were detected. Genotypic correlations were of greater magnitude than phenotypic, highlighting the correlation between grain width (GW) and grain yield (GY), rP = 0.69 *, rG = 0.78 *, also between the weight of 100 seeds (100SW) and GW, rP = 0.97 **, rG = 0.99 **. The characters GW and number of pods per plant (NPP) had positive direct effects on the GY, with an indirect negative effect of NPP by way of GW, while the height of the first pod (HFP), the number of seeds per pod (NSP) and the 100SW directly and negatively influenced the GY of the 10 semi-prostrate cowpea cultivars.

scholarly journals G x E Interaction and path analysis for yield and its attributing traits in advanced genotypes of pigeonpea [Cajanus cajan (L.) Millsp.]

2016 ◽  
Vol 8 (2) ◽  
pp. 616-621
Author(s):  
Ramesh Ramesh ◽  
S. Muniswamy ◽  
Yamanura Yamanura ◽  
Bharathi Bharathi
Keyword(s):  
Grain Yield ◽  
Path Analysis ◽  
Seed Yield ◽  
Agricultural Research ◽  
Research Station ◽  
Flower Initiation ◽  
Environment Interaction ◽  
Days To Maturity ◽  
The Stability ◽  
Positive Direct

The present investigation was carried out during kharif-2012, 2013 and 2014 under rain fed condition at the Agricultural Research Station, Kalaburagi located in north eastern dry zone (Zone 2) of Karnataka, to know the stability and path analysis of the twenty genotypes of pigeonpea including check WRP-1. Highly significant differences among genotypes were observed for all the characters except primary branches. Environmental + (Genotype × Environment) interaction was significant for days to maturity, primary branch, pod bearing length, and seed yield per plant. The variance due to pooled deviation was highly significant for all the characters except for primary branches, pod length and number of seeds per pod which reflect the presence of sufficient genetic variability in the material. Out of 20 genotypes studied, RVK-275 (X=38.713, bi=1.7 and S2di = -9.67) and AKT-9913 (X =43.397, bi=2.86 and S2di= -7.42) were found to be a stable for seed yield and test weight, across the environments with good stability under rain fed conditions compared to local check. Path analysis revealed that days to flower initiation (3.942 and 1.123), days to maturity (1.493 and 0.960), primary branches (0.667 and 0.045), pod bearing length (1.153 and 0.394), number of pods per plant (0.661 and 0.463) and 100 seed weight (0.352 and 0.426) had the highest positive direct effect on grain yield both at genotypic and phenotypic level. For maximizing the grain yield per plant emphasis should be given in selection of such characters for further improvement in pigeonpea.

Studies on genetic variability, correlation and path analysis inpearl millet (Pennisetum glaucum L.) germplasm lines

2017 ◽  
Author(s):  
A. M. Talawar ◽  
G. Girish ◽  
A. S. Channabasavanna ◽  
M.S. Kitturmath
Keyword(s):  
Genetic Variability ◽  
Grain Yield ◽  
Path Analysis ◽  
Pennisetum Glaucum ◽  
Panicle Length ◽  
Plant Seed ◽  
Quantitative Characters ◽  
Correlation And Path Analysis ◽  
Positive Direct ◽  
Positive Significant Correlation

The 52 germplasm lines of pearl millet (Pennisetum glaucum L.) were evaluated for eight quantitative characters with a view to study the genetic variability, correlation and path analysis. The High values of GCV, PCV and heritability estimates coupled with maximum genetic advance over mean were obtained for the characters like productive tillers per plant, grain yield per plant, seed weight, seed yield per ear head and panicle length traits. The results of correlation and path analysis revealed that grain yield per plant exhibited positive significant correlation with panicle length and panicle girth. The plant height, panicle girth and panicle length traits contributed the highest positive direct effect on grain yield.

scholarly journals Correlation and path analysis of yield and its components and plant traits in wheat

2004 ◽  
Vol 34 (6) ◽  
pp. 1701-1708 ◽  
Author(s):  
Lauro Akio Okuyama ◽  
Luiz Carlos Federizzi ◽  
José Fernandes Barbosa Neto
Keyword(s):  
Grain Yield ◽  
Path Analysis ◽  
Plant Traits ◽  
Flag Leaf ◽  
Phenotypic Correlation ◽  
Path Coefficient ◽  
Above Ground Biomass ◽  
Ground Biomass ◽  
Correlation And Path Analysis ◽  
Positive Direct

This study was aimed to characterize yield components and plant traits related to grain yield. Correlation and path analysis were carried out in wheat genotypes grown under irrigated and non-irrigated field conditions. In the path coefficient analysis, grain yield represented the dependent variable and the number of spikes m-2, number of grains spike-1, kernel weight, days to anthesis, above-ground biomass m-2 and plant height were the independent ones. In both years, periods without rain occurred from early milk to grain ripening and from flag leaf sheath opening to grain ripening for first and second sowing dates, respectively. Character associations were similar in both water regimes. Grain yield showed positive phenotypic correlation with above-ground biomass, number of spikes m-2 and number of grains per spike. Path analysis revealed positive direct effect and moderate correlation of number of spike m-2 and number of grains per spike with grain yield. These results indicated that the number of spikes m-2 and the number of grains per spike followed by the above-ground biomass were the traits related to higher grain yield, under irrigated and late season water stress conditions.

scholarly journals Dead Cover and Agronomic Characteristics of Cowpea

2020 ◽  
Vol 12 (10) ◽  
pp. 175
Author(s):  
Vilson de Souza Rocha ◽  
Ajax de Sousa Ferreira ◽  
Bruna Nogueira Leite ◽  
Carla Coelho Ferreira ◽  
Karla Gabrielle Dutra Pinto ◽  
...  
Keyword(s):  
Grain Yield ◽  
Low Income ◽  
Dry Matter ◽  
Mucuna Pruriens ◽  
Control Treatment ◽  
Experimental Unit ◽  
Plant Residues ◽  
Cowpea Cultivars ◽  
Agronomic Characteristics ◽  
Number Of Seeds

Dead cover, or mulch, consisting of plant residues, plays an important role for the success of diverse agricultural crops, working as an insulating layer protecting the soil from daytime temperature variations and maintaining the soil moist and rich in organic matter. Cowpea is a source of proteins, carbohydrates, vitamins and minerals. Its importance in the North, Northeast and Midwest regions of the country is associated with economic and social aspects, since it is an important food for low-income populations, supplying their nutritional needs. This study was carried out under greenhouse conditions in Manaus, state of Amazonas, with the purpose of assessing the effect of different dead covers on the agronomic characteristics of cowpea cultivars. It consisted of a completely randomized design in a 4 × 4 factorial arrangement. The treatments comprised four cowpea cultivars (BRS Caldeirão, BRS Tumucumaque, BRS Guariba and BRS Tracuateua) and three species of cover plants (Brachiaria decumbens, Brachiaria ruziziensis and Mucuna pruriens) and one control treatment, without soil cover, in a total of 16 treatments, with four replications and two plants per experimental unit. Analysis of variance was applied to the data, and the means were compared by the Scott-Knott’s test at 5% probability level. The following characteristics were examined: number of pods per plant, pod length, number of seeds per pod, weight of shoot dry matter, and grain yield. Mulching provided better results for all characteristics assessed in the four cultivars when compared to the control. BRS Caldeirão is the recommended cultivar for the state of Amazonas and the other regions with similar edaphoclimatic characteristics (high air temperature, rainfall, air humidity, and low-fertility tropical soils) because it exhibited the greatest number of pods per plant, number of seeds per pod, shoot dry matter, and the highest average grain yield (Freire Filho et al., 2011; Souza et al., 2016).

Exploring the Social Impact of Foreign Direct Investment on Institutional Change

2016 ◽  
pp. 198-214
Author(s):  
Natalya Smith ◽  
Ekaterina Thomas
Keyword(s):  
Foreign Direct Investment ◽  
Institutional Change ◽  
Direct Investment ◽  
Multinational Firms ◽  
Social Impact ◽  
Positive Impact ◽  
Social Significance ◽  
The Social ◽  
Negative Effect ◽  
Positive Direct

Despite the vast and growing literature on the economic impact of foreign direct investment (FDI), its social significance is somewhat a neglected issue. Focusing on Russia, this chapter examines the effect of FDI and (formal) institutions (proxied, alternatively, by the [1] accumulated stock of small and medium sized firms or SMEs and [2] number of economic crimes per 100,000 population or corruption) on (informal) institutional change (proxied by the change in the number of violent and property crimes per 100,000 population). The empirical findings provide robust support for a significantly positive direct impact of SMEs, whilst observing a significantly negative effect of corruption and either significantly positive impact of FDI or insignificant effect of multinational firms in this context.

scholarly journals GENETIC VARIABILITY, CHARACTER ASSOCIATION AND PATH ANALYSIS OF YIELD AND ITS COMPONENT TRAITS IN MAIZE (Zea mays L.)

2016 ◽  
Vol 29 (1) ◽  
pp. 21-30
Author(s):  
M. N. Huda ◽  
M. S. Hossain ◽  
M. Sonom
Keyword(s):  
Genetic Variability ◽  
Grain Yield ◽  
Path Analysis ◽  
Plant Height ◽  
Direct Effect ◽  
Coefficient Of Variation ◽  
Block Design ◽  
Male Flower ◽  
Maize Genotypes ◽  
Positive Direct

The experiment was conducted in the experimental area of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during March to June, 2014 to study the genetic variability, correlation and path co-efficient analysis for yield and yield contributing characters of maize. In this experiment 25 maize genotypes were used as experimental materials. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Mean performance, variability, correlation matrix and path analysis on different yield contributing characters and yield of maize genotypes were estimated. The highest grain yield/plant (272.21 g) was recorded in the genotype of BARI Hybrid Maize-6, whereas the lowest grain yield/plant (180.40 g) from the genotype of NZ-003. Phenotypic coefficient of variation was higher than the genotypic coefficient of variation for all the yield contributing traits. In correlation study, significant positive association was recorded for grain yield/plant of maize genotypes with plant height (0.235), tassel height (0.359), number of grains/cob (0.854), cob length (0.390), cob diameter (0.313) and weight of 1000-grains (0.689). Path analysis revealed that days to initiation of male flower had positive direct effect (0.132), days to initiation of female flower had negative direct effect (-0.254), days to maturity had positive direct effect (0.178), plant height had positive direct effect (0.314), tassel height had positive direct effect (0.234), ear length had positive direct effect (0.197), number of grains/cob had negative direct effect (-0.095), cob length had positive direct effect (0.167), cob diameter had positive direct effect (0.168) and that weight of 1000-grains had positive direct effect (0.217) on yield / plant.

scholarly journals Sequential Path Analysis for Determination of Relationship Between Yield and Yield Components in Bread Wheat (Triticum aestivum.L.)

2014 ◽  
Vol 6 (1) ◽  
pp. 119-124 ◽  
Author(s):  
Mohtasham MOHAMMADI ◽  
Peyman SHARIFI ◽  
Rahmatollah KARIMIZADEH
Keyword(s):  
Grain Yield ◽  
Path Analysis ◽  
Plant Height ◽  
Canopy Temperature ◽  
Correlation Coefficients ◽  
Early Growth ◽  
Spike Length ◽  
Lattice Design ◽  
Growth Vigor ◽  
Positive Direct

An experiment was conducted to evaluate 295 wheat genotypes in Alpha-Lattice design with two replications. The arithmetic mean and standard deviation of grain yield was 2706 and 950 (kg/ha),respectively. The results of correlation coefficients indicated that grain yield had significant and positive association with plant height, spike length, early growth vigor and agronomic score. Whereas there were negative correlation coefficients between grain yield and days to physiological maturity and canopy temperature before and during anthesis. Path analysis indicated agronomic score and plant height had high positive direct effects on grain yield, while canopy temperature before and during anthesis, and days to maturity, wes another trait having negative direct effect on grain yield. The results of sequential path analysis showed the traits that accounted as a criteria variable for high grain yield were agronomic score, plant height, canopy temperature, spike length, chlorophyll content and early growth vigor, which were determined as first, second and third order variables and had strong effects on grain yield via one or more paths. More important, as canopy temperature, agronomic score and early growth vigor can be evaluated quickly and easily, these traits may be used for evaluation of large populations.

scholarly journals Phenotypic correlations and path analysis for plant architecture traits and grain production in three generations of cowpea

Revista CERES ◽  
2016 ◽  
Vol 63 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Hugo Leonardo Coelho Ribeiro ◽  
Carlos Antônio Fernandes Santos ◽  
Laerte da Silva Diniz ◽  
Layana Alves do Nascimento ◽  
Edna Deodato Nunes
Keyword(s):  
Grain Yield ◽  
Path Analysis ◽  
Plant Architecture ◽  
Statistical Significance ◽  
Phenotypic Correlation ◽  
Cowpea Cultivars ◽  
Phenotypic Correlations ◽  
Three Generations ◽  
Correlation And Path Analysis ◽  
Selection Of

ABSTRACT The objective of this study was to analyze the phenotypic correlation and path analysis of traits related to plant architecture, earliness and grain yield in F2, BC1 and BC2 generations, from crosses between cowpea cultivars BRS Carijó and BR14 Mulato. Most phenotypic correlations of the examined traits were concordant in statistical significance, with approximate values among the examined generations. For the trait seed weight, significant and positive phenotypic correlations were observed in the three generations only for the trait number of secondary branches. The values of the direct effects were in agreement with the values of the phenotypic correlations, which indicate true association by the phenotypic correlation among the traits of grain yield examined. Path analysis indicated that the selection of productive plants will result in early plants and an increased number of secondary branches. In F2, plants with shorter length of the main branch and shorter length of secondary branches can be obtained. The causal model explained 15 to 30% of the total variation in grain weight in relation to the traits examined. The analyses indicated the possibility of selecting plants with a higher and early grain yield, shorter length of primary branches and lower number of nodes, which are important variables for mechanical or semi-mechanical harvesting.

scholarly journals Analisis Pengaruh Portofolio Kredit Terhadap Kualitas Kredit dan Profitabilitas pada BPR Konvensional di Riau

2017 ◽  
Vol 3 (1) ◽  
pp. 1-11
Author(s):  
Dian Febrina
Keyword(s):  
Path Analysis ◽  
Annual Report ◽  
Positive Impact ◽  
Working Capital ◽  
Return On Assets ◽  
Credit Quality ◽  
Significant Negative Effect ◽  
Negative Effect ◽  
Credit Portfolio ◽  
Positive Effect

Abstract: The present research was conducted at Riau Province. The purpose of this research is to influence of credit portfolio to non perfoming loan (NPL) and profitability (ROA) in Bank Perkreditan Rakyat (BPR) Convensional in Riau. The population of this research is a Bank Perkreditan Rakyat Convensional from annual report are listed in Perbarindo Riau during 2009-2013 with the number of saturation samples are 33 BPR in Riau. This research apply on using portofolio credit based on a type of used that is working capital loan, investment loan and consumer loan as an exogenous variable, credit quality (NPL) as an intervening variable and profitability (ROA) as a endogenous variable. The data were analyzed using path analysis. The result of this study indicate that working capital loan through credit quality indirectly significant negative effect on profitability, but the working capital loan directly positive effect on profitability. While investmen loan and consumer loan positive impact on profitability either directly or indirectly throught credit quality. Finally, credit quality and negative significant effect on profitability. Keywords: credit portfolio, working capital loan, investment loan, consumer loan, credit quality, non performing loan (NPL), profitability, return on assets (ROA) and path analysis.

scholarly journals PERILAKU MENYONTEK MAHASISWA MUSLIM

2016 ◽  
Vol 2 (2) ◽  
pp. 31 ◽  
Author(s):  
Warsiyah Warsiyah
Keyword(s):  
Path Analysis ◽  
Hypothesis Testing ◽  
Indirect Effect ◽  
Academic Procrastination ◽  
Muslim Students ◽  
Cheating Behavior ◽  
Variable Level ◽  
Negative Effect ◽  
Positive Direct ◽  
Attitudes Toward Cheating

<p>This study aimed to examine the effect of the direct and indirect simultaneously in a model pathway analysis. More specifically, this research examines (1) the effect of rate on Faith and Academic Procrastination Attitudes toward Cheating, (2) the direct or indirect effect of Level of Faith, Academic Procrastination and Attitudes toward Cheating on Cheating Behavior. Hypothesis testing was conducted based on data collected by questionnaire, which was composed specifically for this study, of 192 Muslim students studying in the Faculty of MT Walisongo IAIN Semarang, selected clusters. Hypothesis testing is done by using path analysis or path analysis. The results of path analysis showed empirically Faith rate has a direct negative effect while empirically Academic Procrastination has a significant positive direct effect on Attitude toward Cheating. However, the level of faith and Academic Procrastination and statistically or practically no direct influence on the attitude towards Cheating. Variable Level of Faith and Academic Procrastination indirectly (through attitude toward cheating) has a significant influence on Cheating Behavior. While the variable Attitude toward Cheating does not have a direct or indirect effect on Cheating Behavior.</p><p><strong>Keywords:</strong> <em>Behavior cheat, attitudes toward cheating, academic procrastination, the level of faith.</em></p>

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