scholarly journals Correlation and path analysis studies for parents and F1crosses in barnyard millet (Echinochloa frumentaceae (Roxb.) Link) for nutritional characters

2018 ◽  
Author(s):  
R. Vishnuprabha ◽  
C. Vanniarajan
Keyword(s):  
Indirect Effects ◽  
Iron Content ◽  
Zinc Content ◽  
Total Phenols ◽  
Direct Effects ◽  
Single Plant ◽  
Barnyard Millet ◽  
Plant Yield ◽  
Anti Oxidant ◽  
Positive Direct

Association analysis was studied in twenty F1 crosses and five parents of barnyard millet to find out the association of nutrient characters and their direct and indirect effects on single plant yield. The results exhibited that the nutrient traits are inter-related and improvement of yield will bring about the simultaneous improvement of the nutrient characters also. Total phenols and iron content recorded moderate positive direct effects on single plant yield. Total anti-oxidant activity and zinc content had low negative direct effects on single plant yield that were neutralized by positive indirect effects of other traits. The analysis revealed that the improvement of yield will simultaneously bring improvement on total phenols and iron content directly and on total anti-oxidant activity and zinc content indirectly.

scholarly journals Consequentialism, Indirect Effects and Fair Trade

Utilitas ◽  
2012 ◽  
Vol 24 (1) ◽  
pp. 126-138 ◽  
Author(s):  
ANDREW WALTON
Keyword(s):  
Fair Trade ◽  
Indirect Effects ◽  
Poverty Reduction ◽  
Direct Effects ◽  
Positive Direct ◽  
The Impact

In this article I consider two consequentialist positions on whether individuals in affluent countries ought to purchase Fair Trade goods. One is a narrow argument, which asserts that individuals should purchase Fair Trade goods because this will have positive direct effects on poverty reduction, by, for example, channelling money into development. I argue that this justification is insufficient to show that individuals should purchase Fair Trade goods because individuals could achieve similar results by donating money to charity and, therefore, without purchasing Fair Trade goods. The second position has a wider focus. It notes both the direct effects of purchasing Fair Trade goods and possible indirect effects, such as the impact this might have on other individuals. I argue that certain actions, of which Fair Trade is one example, will be more likely to encourage individuals who would not otherwise contribute to poverty reduction to contribute and that this may produce additional positive value. Although space prohibits specific conclusions about Fair Trade, I note that considerations of this kind could give us reason to purchase such goods beyond those that issue from the direct effects of doing so and that, as such, they are crucial for determining whether individuals should purchase Fair Trade goods.

Studies on Variability, Heritability, Correlation and Path Analysis in Segregating Population of Black Gram [Vigna mungo (L.) Hepper]

2021 ◽  
Author(s):  
D. Gomathi ◽  
D. Shoba ◽  
V. Ramamoorthy ◽  
M. Arumugam Pillai
Keyword(s):  
Breeding Program ◽  
Yield Potential ◽  
Black Gram ◽  
Single Plant ◽  
Number Of Clusters ◽  
Plant Yield ◽  
Back Ground ◽  
Correlation And Path Analysis ◽  
Efficient Breeding ◽  
Positive Direct

Back ground: Pulses are an important source of protein in the human diet and black gram is a popular pulse crop in India. The black gram breeding program faces various drawbacks due to narrow genetic diversity accompanied by biotic and abiotic diseases which seriously affect the yield potential of the crop. Hence it is important to understand the gene action and to frame the efficient breeding program in black gram for yield improvement.Methods: The present experiment was conducted during 2018-2019. Sixty-nine F2 plants of the cross ADT3 x KKB14-052 were raised and nine biometrical traits were recorded. Genetic variability and association analysis were carried out.Result: High PCV and GCV were obtained for the traits viz., number of primary branches/ plant, number of clusters/plant, number of pods/plant and single plant yield. High heritability and high GAM were obtained for the traits viz., plant height, number of primary branches/plant, number of clusters/plant, number of pods/plant, hundred seed weight, pod length and single plant yield. All the characters under the study were significantly positive correlation with yield except days to 50% flowering. Number of pods/plant showed a high positive, direct effect on single plant yield. Hence, these characters would be mainly focused in black gram breeding programs for yield improvement.

scholarly journals Path analysis for grain yield in barnyard millet (Echinochloa frumentacea (Roxb.) link )

2015 ◽  
Vol 44 (1) ◽  
pp. 147-150
Author(s):  
R Prakash ◽  
C Vanniarajan
Keyword(s):  
Grain Yield ◽  
Indirect Effects ◽  
Association Studies ◽  
Path Coefficient ◽  
Direct And Indirect Effects ◽  
Direct Effects ◽  
Path Coefficient Analysis ◽  
Barnyard Millet ◽  
Straw Yield ◽  
Echinochloa Frumentacea

Path coefficient analysis was studied in 65 genotypes of barnyard millet to find out the association studies of characters and their direct and indirect effects on grain yield/plant. Results exhibited that single earhead weight had maximum direct effects on grain yield/plant followed by straw yield/plant, earhead length and plant height. DOI: http://dx.doi.org/10.3329/bjb.v44i1.22739 Bangladesh J. Bot. 44(1): 147-150, 2015 (March)

scholarly journals Path analysis of iron and zinc contents and others traits in cowpea

2012 ◽  
Vol 12 (4) ◽  
pp. 245-252 ◽  
Author(s):  
Jeane de Oliveira Moura ◽  
Maurisrael de Moura Rocha ◽  
Regina Lúcia Ferreira Gomes ◽  
Francisco Rodrigues Freire Filho ◽  
Kaesel Jackson Damasceno e Silva ◽  
...  
Keyword(s):  
Grain Size ◽  
Grain Yield ◽  
Path Analysis ◽  
Protein Content ◽  
Indirect Effects ◽  
Zinc Content ◽  
Direct Selection ◽  
Direct And Indirect Effects ◽  
Iron And Zinc ◽  
Positive Direct

The objective of this study was to estimate the direct and indirect effects of agronomic and culinary traits on iron and zinc contents in 11 cowpea populations. Correlations between traits were estimated and decomposed into direct and indirect effects using path analysis. For the study populations, breeding for larger grain size, higher number of grains per pod, grain yield, reduced cooking time, and number of days to flowering can lead to decreases in the levels of iron and zinc in the grain. Genetic gains for the iron content can be obtained by direct selection for protein content by indirect effects on the number of grains per pod, 100-grain weight and grain yield. The positive direct effect of grain size and protein content on the zinc content indicates the possibility of simultaneous gain by combined selection of these traits.

scholarly journals Stomatal Traits and Barley (Hordeum Vulgare L.) Forage Yield in Drought Conditions of Northeastern Mexico

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1318
Author(s):  
Foroughbakhch Pournavab Rahim ◽  
Torres Tapia María Alejandra ◽  
Zamora Villa Víctor Manuel ◽  
Treviño Ramirez José Elías ◽  
Ngangyo Heya Maginot
Keyword(s):  
Indirect Effects ◽  
Vegetation Index ◽  
Block Design ◽  
Forage Yield ◽  
Effect Of Temperature ◽  
Direct And Indirect Effects ◽  
Direct Effects ◽  
Lower Side ◽  
Infrared Technology ◽  
Positive Direct

Infrared technology is a practical, fast, non-destructive method that helps in forecasting plant development and can be used to select physiological traits, instead of other methodologies that require more time and breeding efforts. According to the statistical analyses and the relationship between the direct and indirect effects of the variables, this technology could serve as the basis for implementing a genotype selection methodology. Awnless barley was assessed in a randomized block design with three replicates in two crop seasons at Mexico’s northeastern region. Two samplings were carried out during crop development: at 75 and 90 days after sowing. The infrared and stomatal sensors were used to identify the direct and indirect effects of stomata’s traits on dry forage yield. The data were analyzed in a subdivided plot design, using mean comparison tests, correlation coefficients and path analyses, finding significant differences (p < 0.05) among localities and among samplings. Dry forage yield was significant and positively correlated with plant height (r = 0.578) and canopy temperature (r = 0.724), and negatively correlated with the leaf upper side stomatal width (r = −0.409) and the leaf lower side stomatal width (r = −0.641), chlorophyll content and vegetation index. Temperature, chlorophyll, density and leaf lower side stomatal index had the strongest direct effects on yield. Therefore, the infrared technology appears as a way to select high yielding awnless forage barley, to obtain the correlation, the positive direct effect of temperature and the negative effect of chlorophyll. Due to their direct effects, low density and low leaf underside stomatal indexes can also help in the indirect selection of higher yielding forage barley genotypes.

The Effect of Bonuses on Teacher Retention and Student Learning in Rural Schools: A Story of Spillovers

2021 ◽  
pp. 1-59
Author(s):  
Juan F. Castro ◽  
Bruno Esposito
Keyword(s):  
Teacher Retention ◽  
Student Learning ◽  
Rural Schools ◽  
Indirect Effects ◽  
Direct Effects ◽  
Teaching Resources ◽  
Disadvantaged Schools ◽  
Pedagogical Skills ◽  
Positive Spillover ◽  
Positive Direct

Abstract We estimate the direct and indirect effects of recruitment bonuses paid to teachers working in rural schools in Peru on their retention and student learning. This is the first study to estimate the indirect effects of a bonus aimed at attracting teachers to disadvantaged schools. This is important for assessing whether the incentive has improved the distribution of teaching resources and for estimating the direct effect without bias. We exploit the exogenous variation produced in the size of the bonus by the rule used to classify rural schools, and allow ineligible schools to be affected if they have an eligible school nearby. We find the bonus produces positive direct effects on teacher retention but also a negative spillover on the probability of filling teacher vacancies in neighboring schools. This spillover indicates that the bonus is redistributing resources between equally disadvantaged schools. We also find that the bonus has no direct effects on student learning and produces a positive spillover on the scores of students in neighboring schools. We argue these results are due to the poor pedagogical skills of the teachers being mobilized by the scheme. A reasonable policy alternative is a scheme that targets talented teachers with larger bonuses.

scholarly journals Bystanders in Bullying: Do ToM and Social Competence Skills Play a Role?

2018 ◽  
Vol 8 (2) ◽  
pp. 174
Author(s):  
Panayiota Metallidou ◽  
Magdalini Baxevani ◽  
Grigoris Kiosseoglou
Keyword(s):  
Elementary School ◽  
Social Competence ◽  
School Children ◽  
Indirect Effects ◽  
Elementary School Children ◽  
School Bullying ◽  
Self Report ◽  
Direct Effects ◽  
Prosocial Skills ◽  
Positive Direct

The present study aimed at investigating: (a) the direct effects of Theory of Mind (ToM) on elementary school children&rsquo;s self-reports of participant roles in school bullying, (b) ToM&rsquo;s indirect effects via self-reported social competence skills. Gender was examined as moderator. A total of 171 elementary school children (&Nu; = 95 girls) from 3rd to 6thgrade from Greek public schools participated in the study. Participants were examined individually through the administration of advanced ToM stories. Also, they were asked to complete in groups self-report questionnaires as regards their roles as bystanders in bullying situations and their social competence skills. Path analysis indicated significant positive direct effects of ToM on prosocial skills and defending behavior and a negative effect on assisting/reinforcing behavior. Significant indirect effects were found from ToM on bystanding behavior, via its direct effect on prosocial competence skills. Gender was not a significant moderator of the above relations.

scholarly journals Path analysis for morphological traits in maize (Zea mays L.)

Genetika ◽  
2015 ◽  
Vol 47 (1) ◽  
pp. 295-301 ◽  
Author(s):  
Jovan Pavlov ◽  
Nenad Delic ◽  
Ksenija Markovic ◽  
Milos Crevar ◽  
Zoran Camdzija ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Indirect Effects ◽  
Morphological Traits ◽  
Path Coefficient ◽  
Direct Effects ◽  
Coefficient Corrélation ◽  
Number Of Leaves ◽  
Positive Direct ◽  
Positive Effect

Six inbred lines were crossed according to incomplete diallel method. In this way fifteen hybrid combinations were obtained. Hybrid combinations derived from these parental components were used in this work. The objective of study was to estimate direct and indirect effects of five morphological traits on grain yield by the application of the simple coefficient correlation and path coefficient analysis. The trait number of leaves above the top ear with the value of 0.736 has the strongest direct positive effect on grain yield. Positive direct effects on grain yield were also observed for height to tassel base and plant height, while negative direct effects were observed for ear height and total number of leaves. As far as indirect effects were considered, a positive effect of the ear position height on yield over the total plant height stands out. The evaluation of the proportion of mutual effects of five observed morphological traits on grain yield, expressed by the coefficient of multiple determination (R2y12345) amounted to 0.7881.

Trophic Cascades in Grasslands

2018 ◽  
Author(s):  
Brian J. Wilsey
Keyword(s):  
Indirect Effects ◽  
Prey Species ◽  
Trophic Levels ◽  
Herbaceous Plant ◽  
Direct Effects ◽  
Temperate Grasslands ◽  
Cascading Effect ◽  
Top Predators ◽  
Invertebrate Predators ◽  
Ecology Of Fear

Top predators have effects that can ‘cascade down’ on lower trophic levels. Because of this cascading effect, it matters how many trophic levels are present. Predators are either ‘sit and wait’ or ‘active’. Wolves are top predators in temperate grasslands and can alter species composition of smaller-sized predators, prey, and woody and herbaceous plant species, either through direct effects or indirect effects (‘Ecology of Fear’). In human derived grasslands, invertebrate predators fill a similar ecological role as wolves. Migrating populations of herbivores tend to be more limited by food than non-migratory populations. The phenology and synchrony of births vary among prey species in a way that is consistent with an adaptation to predation. Precocious species have highly synchronous birth dates to satiate predators. Non-precocious species (‘hiders’) have asynchronous births. Results from studies that manipulate both predators and food support the hypothesis that bottom-up and top-down effects interact.

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