scholarly journals Correlations and path analysis for fruit yield in pepper lines (Capsicum chinense L.)

2018 ◽  
Vol 8 (2) ◽  
pp. 247-255
Author(s):  
Renato Silva Soares ◽  
Hellismar Wakson da Silva ◽  
Willame Dos Santos Candido ◽  
Luís Sérgio Rodrigues Vale
Keyword(s):  
Path Analysis ◽  
Indirect Effects ◽  
Agronomic Traits ◽  
Selection Process ◽  
Selection Index ◽  
High Yield ◽  
Direct Selection ◽  
Direct And Indirect Effects ◽  
Environmental Correlations ◽  
Highly Correlated

Information regarding the correlation between characters are of great importance to simultaneous traits selection in breeding programs. However, quantification and interpretation of the correlations magnitude do not imply in direct and indirect effects. In this context, the path analysis is presented as an alternative and viable tool for the selection process. The objective of this study was to evaluate the phenotypic, genotypic and environmental correlations between eight major agronomic characters in pepper lines (C. chinense L.) and its consequences in direct and indirect effects by path analysis. Eight agronomic traits were assessed under field conditions in 22 C. chinense L lines. According to the results, there is a genetic variability among the evaluated lines, whose yield per plant (PY) and total number of fruits (NF) variables are highly correlated with high direct effect on pepper lines yield. The selection of pepper lines with high yield can be accomplished through direct selection or using a suitable selection index, being advantageous to select lines with other characteristics, such as appropriate scion height and diameter for conducting manual and mechanized harvesting. The use of the constant k is efficient to reduce the variance of path coefficients, providing better estimation of the effects that affects yield.

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 Grain Yield and Its Associations With Pre-harvest Sprouting in Wheat

2019 ◽  
Vol 11 (4) ◽  
pp. 142
Author(s):  
Alexsander Rigatti ◽  
Daniela Meira ◽  
Tiago Olivoto ◽  
Carine Meier ◽  
Maicon Nardino ◽  
...  
Keyword(s):  
Grain Yield ◽  
Direct Effect ◽  
Indirect Effects ◽  
Agronomic Traits ◽  
Block Design ◽  
Direct And Indirect Effects ◽  
Environmental Correlations ◽  
Randomized Block Design ◽  
Positive Direct ◽  
Lower Tolerance

This study aimed to evaluate direct and indirect effects of agronomic traits importance on grain yield with focus in pre-harvest sprouting. Experiment was conducted in 2017 crop season, and conducted in a randomized block design, with three replications, with eight wheat cultivars (BRS Sábia, CD 105, CD 1104, CD 1440, Frontana, Jadeíte 11, Mirante and ORS Vintecinco). Grain yield and its components were evaluated, as well as other important traits such as pre-harvest sprouting. Data were submitted to variance analysis; and phenotypic, genotypic and environmental correlations were estimated to understand grain yield expression, direct and indirect effects of its components were evaluated through path analysis. Cultivar BRS Sabiá showed shorter cycle, cultivar CD 1104 was highlighted in number of spikes per area, hectoliter weight and grain yield. And cultivars Frontana, CD 1440 and ORS Vintecinco presented the best tolerances pre-harvest sprouting. Grain yield showed high and positive phenotypic and genotypic correlations with number of ears per square meter. Furthermore, high positive direct effect of pre-harvest sprouting on grain yield, revels lower tolerance for cultivars with high grain yield. Number of spikes per square meter showed intermediate and positive direct effect and pre-harvest sprouting had the greatest direct effect on grain yield.

scholarly journals Aplicability of phenotypic and canonic correlations and path coefficients in the selection of oat genotypes

2006 ◽  
Vol 63 (1) ◽  
pp. 11-19 ◽  
Author(s):  
Claudir Lorencetti ◽  
Fernando Irajá Félix de Carvalho ◽  
Antônio Costa de Oliveira ◽  
Igor Pirez Valério ◽  
Irineu Hartwig ◽  
...  
Keyword(s):  
Grain Yield ◽  
Indirect Effects ◽  
Agronomic Traits ◽  
Direct Selection ◽  
Individual Plant ◽  
Direct And Indirect Effects ◽  
Direct Effects ◽  
Genetic Progress ◽  
Path Coefficients ◽  
Selection Of

Indirect selection through traits of higher heritability and of case measurements can result in larger genetic progress compared to using direct selection. This work was performed with the following objectives: (1) to estimative the phenotypic correlations between individual plant grain yield and agronomic traits of importance in the selection of white oat (Avena sativa L.) genotypes; (2) to identify traits that have the higher direct and indirect effects on grain yield; (3) to determine the intensity of association between primary and secondary components of grain yield; and, (4) to evaluate the consistency of these estimates using five oat genotypes crossed in a diallel format. The number of panicles per plant (NPP) showed to be the trait highest correlated with individual plant grain yield (GY) both through single correlations and through direct effects on grain yields. For weight of a thousand grains (WTG) <FONT FACE=Symbol>´</FONT> GY, in most crosses there was no detected association, leading to possible troubles for breeders, since larger grains were not associated to higher yield, except for the crosses UPF16 <FONT FACE=Symbol>´</FONT> UFRGS17 and UFRGS17 <FONT FACE=Symbol>´</FONT> URPel95/015. The trait number of grains per plant (NGP) was directly correlated with GY in all crosses, although the direct effects estimates on GY were negative for the crosses UPF16 <FONT FACE=Symbol>´</FONT> UPF18, UPF16 <FONT FACE=Symbol>´</FONT> URPel95/015, UPF18 <FONT FACE=Symbol>´</FONT> UFRGS17 and UFRGS7 <FONT FACE=Symbol>´</FONT> URPel95/015, indicating that correlations are not the main causes altering GY, which could be explained, in the present work, by indirect effects via NPP and mainly via panicle weight (PW).

scholarly journals Genetic correlation and path analysis of common bean collected from Caceres Mato Grosso State, Brazil

2017 ◽  
Vol 47 (8) ◽  
Author(s):  
Danilo de Lima Gonçalves ◽  
Marco Antonio Aparecido Barelli ◽  
Taniele Carvalho de Oliveira ◽  
Paulo Ricardo Junges dos Santos ◽  
Claudete Rosa da Silva ◽  
...  
Keyword(s):  
Grain Yield ◽  
Path Analysis ◽  
Common Bean ◽  
Indirect Effects ◽  
Agronomic Traits ◽  
Genetic Correlations ◽  
Favorable Effect ◽  
Direct And Indirect Effects ◽  
Mato Grosso ◽  
Correlation And Path Analysis

ABSTRACT: The aim of the study was to determine genetic correlations of agronomic traits and to evaluate direct and indirect effects, through path analysis, between variables analyzed with grain yield. Forty accessions of common bean, cultivated at Caceres County were evaluated, by using randomized complete blocks design with three repetitions. Coefficient magnitudes of genotypic correlations were superior to phenotypic and environmental ones for most correlations, suggesting greater influence of genetic factor than environmental factors. In order to determine the importance of direct and indirect effects, path analysis was performed, which provided greater reliability in interpretations of cause and effect between studied traits, indicating that grain yield may be explained by the effects of analyzed traits. Number of seeds per plant (0.801) and grain weight (0.641) showed higher favorable effect over grain yield, allowing its use in direct or indirect selection for grain yield in common bean.

scholarly journals GENETIC GAINS IN THE POPCORN POPULATION UENF-14: DEVELOPING THE NINTH GENERATION OF INTRAPOPULATION RECURRENT SELECTION

2019 ◽  
Vol 32 (3) ◽  
pp. 625-633
Author(s):  
AMANDA GONÇALVES GUIMARÃES ◽  
ANTÔNIO TEIXEIRA DO AMARAL JÚNIOR ◽  
GUILHERME FERREIRA PENA ◽  
JANEO EUSTÁQUIO DE ALMEIDA FILHO ◽  
MESSIAS GONZAGA PEREIRA ◽  
...  
Keyword(s):  
Grain Yield ◽  
Indirect Effects ◽  
Recurrent Selection ◽  
Selection Process ◽  
Selection Index ◽  
Average Height ◽  
Direct And Indirect Effects ◽  
Genetic Progress ◽  
Breeding Programs ◽  
Selection Of

ABSTRACT The occurrence of negative correlations between grain yield (GY) and popping expansion (PE) in popcorn complicates the selection process. In an attempt to overcome this inconvenience, we proposed the use of the importance characteristic volume per popcorn per hectare (PV). The objectives of this study were to develop the ninth cycle of the UENF-14 popcorn population, to estimate the direct and indirect effects of PV and to verify the genetic progress among all selective cycles. We obtained and evaluated 200 inbred progenies in randomised blocks arranged in replicates within sets, with nine sets consisting of 25 progenies and one set with all previous eight cycles with three replicates. The average height of the plants, prolificacy, 100-grain weight, grain yield, grain popping expansion and volume per popcorn per hectare were evaluated. Track analysis was performed to determine the direct and indirect effects, and the Mulamba and Mock selection index was calculated for the selection of the 40 superior progenies. There was genetic variability among progenies in all evaluated traits, with a cause-and-effect relationship between PV with GY and PE, allowing simultaneous gains with indirect selection. The selection of the best progenies was more effective when using arbitrarily assigned weights, which provided higher predicted gains for PV (20.73%). The means obtained in all cycles indicated increases, demonstrating the efficiency of using continuous recurrent selection in popcorn breeding programs.

scholarly journals Integrating Conventional and Participatory Breeding Approaches in Assessment of Common Bean Varieties for Farmer Preffered Traits

2019 ◽  
Vol 11 (5) ◽  
pp. 104
Author(s):  
Papias H. Binagwa ◽  
Magdalena William ◽  
Julius P. Mbiu ◽  
Eunice Zakayo ◽  
Shida M. Nestory ◽  
...  
Keyword(s):  
Common Bean ◽  
Agronomic Traits ◽  
Selection Process ◽  
Block Design ◽  
Group Discussion ◽  
High Yield ◽  
Market Demand ◽  
Variety Selection ◽  
Early Maturing ◽  
Participatory Variety Selection

It is estimated that over 75% of rural households in Tanzania depend on common bean (Phaseolus vulgaris L.) for daily subsistence. Recently, farmers have been increasingly looking for improved bean varieties which meet specific market demands characterized with yellow seed colour, early maturing and/or adapted to local agro-ecologies. Study focused on assessing the performance of bean varieties for agronomic traits through variety and environmental interactions by identifying high yielding, ealy maturing and market demand seed classes among the tested materials. For testing adaptability and stability, experiments were conducted in low to high altitudes for two consecutive years using randomized complete block design (RCBD) with three replicates. Eight common bean varieties KG98, Navy line 1, KATB9, SABRYT, KATB1, Lyamungu 85, JESCA and Calima Uyole were used. Absolute, matrix and pairwise ranking were used integratively for farmers&rsquo; and researcher&rsquo;s assessment and selection. Participatory variety selection approach gave farmers an opportunity to assess and select varieties from a range of near finished materials in the breeding process. As part of the Farmers&rsquo; participatory variety selection process, seventeen participants as among the consumers 46% being women were selected to participate in a focused group discussion. Results revealed that, days to flowering, days to maturity and yield across the tested environments showed significant differences (p &le; 0.05) as well as yield and diseases interactions for genotype, environment and season. Field data and farmers&rsquo; assessment data showed two varieties of KATB1 (yellow round) and KATB9 (red round) for better performance (high yield) and grain preference respectively. It showed that, early maturing; seed type and marketability varieties are highly demanded by bean farmers in Tanzania.

scholarly journals HUBUNGAN ANTARA KARAKTER VEGETATIF DE NGAN PRODUKSI PATI SAGU BARUQ

2020 ◽  
Vol 20 (4) ◽  
pp. 203
Author(s):  
ELSJE T. TENDA ◽  
. MIFTAHORRACHMAN
Keyword(s):  
Path Analysis ◽  
Indirect Effects ◽  
Selection Criteria ◽  
Crop Improvement ◽  
High Yield ◽  
Font Size ◽  
North Sulawesi ◽  
Number Of Leaves ◽  
Vegetative Characters ◽  
Starch Production

<p><span style="font-size: medium;">ABSTRAK</span></p><p><span style="font-size: medium;"> </span></p><p><span style="font-size: medium;">Sagu baruq merupakan tanaman sumber karbohidrat yang diambil dari batang. Masalah yang dihadapi adalah seleksi produksi pati pada </span><span style="font-size: medium;">setiap pohon. Banyak atau sedikitnya produksi pati akan diketahui setelah pohon ditebang. Tujuan penelitian ini adalah untuk mendapatkan informasi genetik plasma nutfah sagu baruq, terutama untuk mengetahui korelasi antara  karakter-karakter  vegetatif  dengan  produksi  pati,  yang  dapat dimanfaatkan untuk kegiatan seleksi tetua. Salah satu alat yang bisa digunakan untuk mendapatkan informasi ini adalah metode sidik lintas. Karakter yang diamati adalah tinggi batang, jumlah daun, panjang rachis, panjang dan lebar petiol, panjang, lebar, dan jumlah anak daun, serta berat batang, empulur, dan pati. Pengumpulan data dilakukan dengan mengacu pada metode Pusat Penelitian dan Pengembangan Perkebunan tahun 2005. Data yang terkumpul dianalisis koefisien korelasinya untuk mengetahui hubungan langsung dan tidak langsung karakter-karakter vegetatif dengan berat  tepung  sebagai  komponen  hasil.  Perhitungan  koefisien  lintas mengacu pada metode matriks oleh Singh dan Chaudari. Hasil yang diperoleh   menunjukkan   terdapat   enam   karakter   yang   berpengaruh langsung terhadap berat tepung dan dapat dijadikan seleksi peningkatan </span><span style="font-size: medium;">produksi pati sagu baruq di Tabukan Tengah. Sementara itu, di Manganitu, <br /> </span><span style="font-size: medium;">terdapat sembilan karakter yang dapat dijadikan sebagai kriteria seleksi untuk perbaikan tanaman. Selain pengaruh langsung, dihasilkan juga 12 pengaruh tidak langsung yang dapat dipertimbangkan sebagai kriteria seleksi populasi sagu baruq di Tabukan Tengah dan 10 pengaruh tidak langsung untuk Manganitu.</span></p><p><span style="font-size: medium;">Kata kunci:  Arenga macrocarpha,  hubungan, karakter vegetatif, produksi pati</span></p><p><span style="font-size: medium;"> </span></p><p><span style="font-size: medium;"> </span></p><p> </p><p><span style="font-size: medium;">Relationship Between Vegetative Characters an d SagoBaruq Starch Production From Sangihe District </span></p><p><span style="font-size: medium;"><br /></span></p><p><span style="font-size: medium;">ABSTRACT</span></p><p><span style="font-size: medium;"> </span></p><p><span style="font-size: medium;">Baruq sagu is an important source of carbohydrate from the stem, constrain in cultivation was difficulty in selecting high yield plants. The experiment   was   conducted   at   the   District   Tabukan   Tengah   and Manganitu Sangihe Regency, North Sulawesi in May 2012. The purpose of this study was to obtain genetic information for germplasm of sago Baruq,  especially  to  determine  the  correlation  between  vegetative characters  and the production of starch, which  later can be used as the selection of mother palms. One of the tools that can be used to obtain this  information was the method of path analysis. Research methods used  was direct observation in the field. The number of plants observed for  each  site 1 0    trees,  which  were  randomly  selected.  Characters observed were plant height, number of leaves, rachis length, length of petiol, petiol width, length of the leaf,  width of  leaf,  number of leaves, stems weight, pith weight, and weight of starch. The collected data were analyzed  to  determine  the  direct  and  indirect  relationship  between vegetative characters and weight of starch using path analysis. The result showed  that 10  vegetative  characters  of  Baruq  sago  population  in Tabukan  Tengah   District,  Sangihe  regency  produced  six  characters directly influence the character of the starch weight and can be used as selection   criteria   to   increasing   production   of   baruq   sago   starch. Meanwhile, in District Manganitu 9 characters can be used as selection criteria for crop  improvement. In  addition to the direct  effects, 12 indirect effects can be considered as a selection criteria for sago baruq population in District Tabukan Tengah and 10 indirect effects for the population baruq sago in the District Manganitu.</span></p><p><span style="font-size: medium;"> </span></p>Keywords:   Arenga  macrocarpha ,  relationships,  vegetative  character,       starch production

scholarly journals Pengaruh Gaya Hidup Terhadap Keputusan Pembelian Dan Kepuasan Konsumen Sepeda Motor Kawasaki D-Tracker 150 Di Kota Dumai

2020 ◽  
Vol 8 (1) ◽  
pp. 54-68
Author(s):  
Fajri Mubarak Natsir ◽  
Zulkarnain ◽  
Alvi Furwanti Alwie
Keyword(s):  
Customer Satisfaction ◽  
Path Analysis ◽  
Indirect Effect ◽  
Indirect Effects ◽  
Consumer Satisfaction ◽  
Sampling Method ◽  
Sampling Technique ◽  
Direct And Indirect Effects ◽  
Equal Opportunities ◽  
Purchasing Decisions

This study aims to see and know the direct and indirect effects of lifestyle on purchasing decisions and consumer satisfaction. The population in this study were 500 respondents from Dumai City who bought and used a Kawasaki D-Tracker 150 motorcycle, using Path Analysis. In this study the sampling method uses the Probability Sampling Technique, which is a sampling technique that provides equal opportunities for elements of the population to be selected as sample members. In this study the authors set a sample of the criteria of respondents, namely age 17 years and above. Samples taken in this study used the Slovin formula. The results in this study that lifestyle has a positive and significant effect on consumer purchasing decisions. Lifestyle and purchasing decisions have a positive and significant effect on customer satisfaction. There is an indirect effect of Lifestyle on Consumer Satisfaction through Decisions

scholarly journals CORPORATE SOCIAL RESPONSIBILITY TERHADAP MANAJEMEN LABA DAN KINERJA PERUSAHAAN

2020 ◽  
Vol 12 (2) ◽  
pp. 52-59
Author(s):  
Devi Dwi Rahmawardani ◽  
Muslichah Muslichah
Keyword(s):  
Corporate Social Responsibility ◽  
Social Responsibility ◽  
Earnings Management ◽  
Path Analysis ◽  
Indirect Effects ◽  
Sampling Method ◽  
Company Performance ◽  
Direct And Indirect Effects ◽  
Purposive Sampling ◽  
Corporate Social

This study aims to analyze the direct and indirect effects of Corporate Social Responsibility (CSR) on company performance through earnings management. The objects in this study are companies incorporated in LQ45 in the 2016-2018 period. Samples were taken using a purposive sampling method. The data of this study were analyzed using path analysis. The results showed four important findings: (1) the influence of CSR on company performance is positive and significant, (2) CSR has a negative and significant effect on earnings management, (3) the effect of earnings management on company performance is not significant (4) earnings management cannot mediate the effect of CSR on company performance.

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