scholarly journals Association of Agro-Morphological and Oil Traits in Groundnut (Arachis hypogaea L.) Cultivars

2018 ◽  
Vol 6 (2) ◽  
pp. 67-74
Author(s):  
Zekeria Yusuf ◽  
Habtamu Zeleke ◽  
Wassu Mohammed ◽  
Shimelis Hussein ◽  
Arno Hugo
Keyword(s):  
Path Analysis ◽  
Oil Content ◽  
Block Design ◽  
Oil Quality ◽  
Genetic Correlations ◽  
Quality Parameters ◽  
Path Coefficient ◽  
Wet Season ◽  
Environmental Correlations ◽  
Selection For

The associations between the traits of interest in plant breeding are commonly evaluated by means of phenotypic, genotypic and environmental correlations, and through path coefficient analysis that shows direct and indirect cause and effect relationship. Sixteen groundnut genotypes (including local check) were evaluated for quantitative parameters. The crop was sown during 2015 wet season across four locations in Ethiopia. The experiment was laid out in Randomized Complete Block Design (RCBD) with two replications. The results indicated that genotypic correlations were higher than the phenotypic and environmental ones. The grain yield (kg/ha) has presented positive and significant genetic correlation with PWP, SWP and 100SW. Genetic correlations of oil content with agro-morphological traits and oil quality parameters were shown that oil content was significant and positively correlated with pod weight per plant (PWP) and seed weight per plant (SWP) showing that possibility of indirect selection for oil content through these traits. The path analysis based on genotypic correlation in the present study was shown that selection for oil content trait is effective through OY, GY, NMP and NSPOD; breeding for TPUS/TS trait is effective through selection for high oil content, NMP, PWP, AGBP, O/L ratio, and NSP traits. Furthermore, the path analysis has shown that breeding for high O/L ratio can be conducted through selection for AGBP, NSPOD, NSP, oil content, TPUS/TS or oleic acid traits; likewise breeding for oil yield (OY) can be conducted via selection for oil content, NSP, AGBP, NBP or TPUS/TS.

scholarly journals Path analysis of yield components in tropical pumpkin

1969 ◽  
Vol 90 (3-4) ◽  
pp. 183-191
Author(s):  
Miguel Espitia-Camacho ◽  
Franco A. Vallejo-Cabrera ◽  
Diosdado Baena-Garcia ◽  
Linda Wessel-Beaver
Keyword(s):  
Path Analysis ◽  
Indirect Effects ◽  
Block Design ◽  
Genetic Correlations ◽  
Fruit Weight ◽  
Residual Effects ◽  
Path Coefficient ◽  
Direct Effects ◽  
Randomized Complete Block Design ◽  
Effect On Yield

Path coefficient analysis was carried out in tropical pumpkin (Cucurbita moschata Duchesne) for yield per plant as a function of number of fruit per plant and weight per fruit, using phenotypic and genetic correlations from two diallels: one using five varieties (variety diallel) and a second using five S1 lines derived from the varieties (line diallel). A randomized complete block design with five replications was used to evaluate 15 genotypes from each diallel, not including reciprocals. Direct effects were 300 to 500% greater than indirect effects in the line diallel. In contrast, direct effects were only 17 to 68% greater than indirect effects in the variety diallel. Effects (direct and indirect) were greater (17 to 500%) when genetic correlations rather than phenotype correlations (42 to 440%) were used in the path analysis. Fruit weight showed a greater effect on yield than did number of fruit, with values between 3.2 to 4.9 times the residual effects. Fruit weight and number of fruit can be used as selection criteria to increase yield in tropical pumpkin.  

scholarly journals Correlations and path analysis of peanut traits associated with the peg

2011 ◽  
Vol 11 (1) ◽  
pp. 88-95 ◽  
Author(s):  
Lucas Nunes da Luz ◽  
Roseane Cavalcanti dos Santos ◽  
Péricles de Albuquerque Melo Filho
Keyword(s):  
Path Analysis ◽  
Block Design ◽  
Reproductive Efficiency ◽  
Path Coefficient ◽  
Stem Height ◽  
Randomized Block Design ◽  
Advanced Line ◽  
Selection For ◽  
Lower Plant ◽  
Selection Of

By correlation and path-coefficient analysis, the most relevant traits for selection for peanut pod yield were identified among the following: total number of pegs (TNP), number of pegs in the lower third of the plant (NPLTh), number of mature pods (NMP), main stem height (MSH), and reproductive efficiency (EF1 and EF2). The trial consisted of 15 F2:3 progenies derived from a cross of variety BR 1 and the advanced line CNPA 280 AM, evaluated in a randomized block design with three replications. The lines with best reproductive efficiency were L.8 and L.11. Path analysis detected a strong direct effect of the number of pegs in the lower plant third on the number of mature pods. This finding justifies the use of the number of pegs in the lower plant third in selection of peanut populations for number of mature pods.

scholarly journals Preliminary Evaluation of Olive (Olea europaea L.) Cultivars in Northwest and Central of Mexico

2020 ◽  
pp. 10-17
Author(s):  
Raúl Leonel Grijalva-Contreras ◽  
Rubén Macías-Duarte ◽  
Arturo López-Carvajal ◽  
Fabián Robles-Contreras ◽  
Manuel de Jesús Valenzuela-Ruiz
Keyword(s):  
Central Region ◽  
Oil Content ◽  
Block Design ◽  
Oil Quality ◽  
Virgin Olive Oil ◽  
Fruit Weight ◽  
Yield Potential ◽  
Preliminary Evaluation ◽  
Olive Cultivars ◽  
Northwest Region

A strategy to improve productivity in olive orchards is the evaluation of cultivars that respond better to the environmental growing conditions The objective of this experiment was to evaluate the yield potential and oil quality of five olive cultivars (Arbequina, Coratina, Manzanilla, Arbosana and Mission) in two regions of Mexico. The experiment was carried out during two consecutive years 2018 and 2019. At Northwest Region the five olive cultivars were planted in 2013 at a spacing of 10 x 5 m (having 200 trees ha-1) and Central Region olive cultivars were planted in 2013 at spacing of 6 x 6 m (278 trees ha-1) and both locations under drip irrigation systems. The variables evaluated were:  yield, fruit weight, oil content and oil quality (acidity, peroxide value and absorbance K232 and K270). The experiment was analyzed using a randomized complete block design with four replications.  Our results showed high differences between locations, Arbequina was the cultivar with the highest yield at the fifth and sixth years of planting with an average of 48.8 kg tree-1 at Northwest Region and only 15.5 kg tree-1 at Central Region. The cultivar with the highest oil content in the Northwest Region was Manzanilla with an average of 12.3% and the lowest for Arbequina with only 9.3%, while at Central Region the cultivar with the highest oil content was Coratina with 20.2% and the lowest in Manzanilla with 16.1%. Extra virgin olive oil was obtained in all the cultivars in both locations according to chemical analysis. Finally, it is necessary to continue with the evaluation of other varieties with resistance to high temperatures at Northwest Region and resistance to frost at Central Region.

scholarly journals Optimizing nitrogen rate and planting density for sunflower under irrigated conditions of Punjab

2015 ◽  
Vol 13 (1) ◽  
pp. 174-187 ◽  
Author(s):  
K Rasool ◽  
A Wajid ◽  
Sanaullah ◽  
A Ghaffar ◽  
M Shoaib ◽  
...  
Keyword(s):  
Oil Content ◽  
Block Design ◽  
Oil Quality ◽  
Growth Yield ◽  
Planting Density ◽  
Area Index ◽  
Nitrogen Levels ◽  
Plant Densities ◽  
Biological Yield ◽  
Nitrogen Rates

A field study was conducted at different nitrogen rates on growth, yield and achene oil content of sunflower sown at different planting densities at Faisalabad, Punjab, Pakistan. Randomized complete block design with split plot arrangement was applied, having plants densities (8.33, 6.67 and 5.56 plants m-2) in main plots and while various nitrogen levels (90, 120 and 150 kg ha-1) in sub-plots. The plant densities and various nitrogen levels had a significant effect on leaf area index, crop growth rate, 1000-achene weight, head diameter, number of achenes head- 1,biological yield, oil quality, harvest index and achene yield of sunflower. The plants which were fertilized at 150 kg N ha-1 gaveabout 24% more achene yield as compared to 90 kg N ha-1. More oil content was obtained in plots where nitrogen was applied at the rate of 90 kg ha-1. It can be concluded that nitrogen application at the rate of 150 kg ha-1 with planting density (8.33 plants m-2) produced highest achene yield.SAARC J. Agri., 13(1): 174-187 (2015)

scholarly journals Character Association and Path Analysis for Yield Components and Biochemical Traits in Maize (Zea mays L.) Genotypes

2021 ◽  
Author(s):  
Prabhat Kumar Singh ◽  
B. Sushma ◽  
Nidhi Kumari
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Standard Procedure ◽  
Grain Weight ◽  
Direct Selection ◽  
Path Coefficient ◽  
Biochemical Traits ◽  
Internodal Length ◽  
Selection For ◽  
Positive Direct

Background: Grain yield is a complex character so direct selection for yield as such can be misleading. Keeping in view, the present study aimed to assess the path coefficient analysis with correlation coefficient technique to establish the direct and indirect relationship between the yield and its component. Methods: The present investigation carried out during kharif 2019 at Centurion University of Technology and Management, Odisha in randomized complete block design with 3 replication involving 20 maize genotypes. Data were collected from five randomly selected plnts on 20 agromorphic and biochemical traits. All the biochemical analysis estimated from leaf sample following standard procedure. Result: The traits shelled grain weight, cob diameter, number of grains per cob and anthesis silking interval were found to possess significant association in disirable direction with five ear weight at both genotypic and phenotypic levels. None of the biochemical trairts establishing significant positive association with yield. Highest positive direct effect on 5 ear weight was noticed by shelled grain weight (1.108) followed by phenols (0.115), internodal length (0.106) and days to 50 percent anthesis (0.102) indicating that the selection for these characters were likely to bring about an overall improvement in grain yield directly.

Variation for fatty acids and oil quality parameters in backcross population of groundnut (Arachis hypogaea L.)

2015 ◽  
Vol 35 (4) ◽  
Author(s):  
K. Gangadhara ◽  
H. L. Nadaf ◽  
J. Ashish
Keyword(s):  
Oleic Acid ◽  
Linoleic Acid ◽  
Iodine Value ◽  
Block Design ◽  
Oil Quality ◽  
Quality Parameters ◽  
Recurrent Parent ◽  
Backcross Population ◽  
Mean Values ◽  
Backcross Populations

Groundnut is an important oilseed legume and oil quality mainly depends on its fatty acid composition. In present study, backcross populations of the cross between GPBD 4 × GM 4-3 (using GPBD 4 as recurrent parent) were evaluated for two generations in augmented randomized block design at experimental plots of University of Agricultural Sciences, Dharwad. Frequency distribution and mean values of both generations showed considerable variability for oleic acid, linoleic acid, O/L ratio and iodine value. Both Oleic acid and linoleic acid are associated strongly with linoleic acid and iodine value in both backcross generations. Moderate heritability of oleic acid and high heritability of O/L ratio and also negative correlation between O/L ratio and linoleic acid suggests the scope for selection of oleic acid and O/L ratio to improve oil quality in groundnut.

scholarly journals Effect of selenium and zinc foliar application to increase the quantitative and qualitative yields of rapeseed at different sowing dates

2022 ◽  
Vol 72 (4) ◽  
pp. e428
Author(s):  
A. Goharian ◽  
A.H. Shirani Rad ◽  
P. Moaveni ◽  
H. Mozafari ◽  
B. Sani
Keyword(s):  
Seed Yield ◽  
Oil Content ◽  
Foliar Application ◽  
Block Design ◽  
Pure Water ◽  
Oil Quality ◽  
Sowing Date ◽  
Oil Yield ◽  
Zinc Treatment ◽  
Sowing Dates

The sowing date is an important factor for expanding the cultivated area of rapeseed and affects seed yield, oil content, and fatty acid compounds. Micronutrient elements play an important role in improving the vegetative and reproductive growth of the plant, especially under conditions of biological and environmental stresses. A two-year experiment (2014-2016) was performed to study the response of rapeseed genotypes to foliar application of micronutrients on different sowing dates. The treatments were arranged as a factorial-split plot in a randomized complete block design with three replicates. Three sowing dates of 7 (well-timed sowing date), 17, and 27 (delayed sowing dates) October and two levels of foliar application with pure water (control), selenium (1.5%), zinc (1.5%), and selenium+zinc (1.5%) were factorial in the main plots and five genotypes of SW102, Ahmadi, GKH2624, GK-Gabriella, and Okapi were randomized in the subplots (a total of 30 treatments). Seed yield, oil yield and content, oleic acid, and linoleic acid were reduced when rapeseeds were cultivated on 17 and 27 October, while the contents in palmitic, linolenic, and erucic acids, and glucosinolate increased (p < 0.01). a selenium+zinc treatment improved seed yield, oil content and yield (p < 0.01). The oil quality increased due to increased contents of oleic and linoleic acids under the selenium+zinc treatment (p < 0.01). The GK-Gabriella and GKH2624 genotypes are recommended to be sown on well-timed (7 October) and delayed sowing dates (17 and 27 October) and treated with selenium+zinc due to the higher oil yield, linoleic and oleic acids.

scholarly journals Karakteristik Empat Aksesi Nilam

2016 ◽  
Vol 12 (2) ◽  
pp. 45
Author(s):  
Yang Nuryani
Keyword(s):  
Plant Height ◽  
Oil Content ◽  
Block Design ◽  
Oil Quality ◽  
Morphological Characters ◽  
Plant Spacing ◽  
Alcohol Content ◽  
Patchouli Alcohol ◽  
Randomized Block Design

<p>Characterization of four accessions of patchouli was conducted to obtain the information of characteristics to be utilized for future breeding program. The experiment was conducted in three locations namely Ciamis, Cimanggu, and Sukamulya. Four accessions of patchouli namely 0003, 0007, 0012, and 0013 were tested in a randomized block design with five replications, plant spacing of 100 x 50 cm, and 100 plants/plot. The plant were first harvested six month after planting and the 2nd harvested four months after the 1st harvested. The observation were made before the first harvested on morphological characters, production, oil content, and oil quality. The result showed that some of morphological characters such as plant height, accessions of primary and secondary branches, length of primary and secondary branches, length and widh of leaf as weel as numbers of leaves on primary branches on accession of 0012 were higher than that of another three accessions. The highest production of dry terna (13,278 t/ha) and patchouli alcohol content (33,3%) was observed on accession 0012, while the highest oil content (3,2%) on accession 0007. The main morphological characters that can be used to identify those accessions of patchouli was the colour of stem, accessions 0012 was green with slight purple, 0003 and 0007 more purple, and 0012 dark purple.</p><p> </p><p><strong>Abstrak</strong></p><p>Karakteriasi empat aksesi nilam bertujuan untuk mendapatkan informasi mengenai karakter nilam dan pemanfaatannya dalam pemuliaan tanaman di masa yang akan datang. Penelitian dilakukan di tiga lokasi, yaitu Ciamis, Cimanggu, dan Sukamulya. Aksesi 0003, 0007, 0012, dan 0013 dikarakterisasi dalam rancangan acak kelompok dengan lima ulangan, jarak tanam 100 x 50 cm, 100 tanaman per petak. Panen pertama dilakukan pada umur 6 bulan dan panen kedua 4 bulan setelah panen pertama. Pengamatan dilakukan sebelum panen pertama. Parameter yang diamati adalah karakter morfologi, hasil, kadar, dan mutu minyak, serta ketahanan terhadap penyakit. Hasil penelitian menunjukkan tinggi tanaman, jumlah cabang primer/ sekunder, panjang cabang primer/sekunder, panjang dan lebar daun, dan jumlah daun per cabang primer aksesi 0012 lebih tinggi daripada ketiga aksesi lainnya. Produktivitas terna kering (13,278 t/ha) dan kadar patchouli alkohol (33,3%) tertinggi diberikan oleh aksesi 0012, sedangkan kadar minyak tertinggi (3,2%) ditunjukkan oleh aksesi 0007. Karakter morfologi yang membedakan aksesi-aksesi tersebut terutama adalah warna batang tua. Aksesi 0012 memiliki batang tua berwarna hijau dengan sedikit ungu, sementara aksesi 0003 dan aksesi 0007 lebih ungu dan aksesi 0012 paling ungu.</p>

scholarly journals Development of Selection Criteria on Bean Weight Character of Cocoa (Theobroma cacaoL.) through Path Analysis Approach

2013 ◽  
Vol 29 (3) ◽  
Author(s):  
Indah Anita Sari ◽  
Agung Wahyu Susilo
Keyword(s):  
Genetic Variation ◽  
Path Analysis ◽  
Selection Criteria ◽  
Block Design ◽  
Dry Weight ◽  
Variation Coefficient ◽  
Path Coefficient ◽  
Genetic Progress ◽  
Pod Number ◽  
Bean Weight

Path coefficient analysis is frequently used for development of selection criteria on various type of plants. Path analysis on this research was conducted to find the selection criteria of yield component which directly affect bean weight. In addition to the value of path analysis coefficient, genetic variation coefficient, heritability and the value of genetic progress were also studied. The study was conducted at the Indonesian Coffee and Cocoa Research Institute. The research used randomized complete block design consisting of 14 accession numbers and each consisting of three replications. Pod girth, pod length, pod weight, wet beans weight per pod, number of normal beans per pod, number of abnormal beans per pod, dry weight per normal bean, and shell content were observed. The results showed that the pod weight character had an important role in determining the dry weight of normal bean. The character had a positive genotype correlation coefficient values which was high and significantly different (r=0.46) for dry weight per normal bean, considerable direct influence (P=0.479), moderate of the genotype variation coefficient (9.6%), and high genetic progress (95.23). Character of wet bean weight per pod could also be used indirectly for the selection criteria for dry weight per normal bean based on genetic variation coefficient value (11.88%), genetic progress value (82.48), and direct effect on dry weight per normal bean had positive value (P=0.006). Key words: Selection criteria, dry weight per bean, path analysis,Theobroma cacaoL.

scholarly journals Correlation and Path Coefficient Analysis Studies on Grain Yield and Its Contributing Characters in Maize (Zea mays L.)

2020 ◽  
pp. 7-13
Author(s):  
O. P. Taiwo ◽  
A. I. Nwonuala ◽  
B. F. Isaiah ◽  
D. O. Olawamide ◽  
I. K. Agbugba
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Path Coefficient ◽  
Path Coefficient Analysis ◽  
Maize Grain Yield ◽  
Maize Varieties ◽  
Ear Height ◽  
Maize Grain ◽  
Selection For ◽  
Positive Direct

In crop breeding, the selection for yield is made complex because of the quantitative and polygenic nature of the character. This study was undertaken to assess character association and show the contribution of various yield contributing characters in some maize varieties through the help of correlation and path coefficient analyses in order to identify appropriate plant characters for selection to improve maize grain yield. Seventeen maize varieties were sown in a randomized complete block design with three replications in a humid environment of Port Harcourt, Nigeria in 2018 under rainfed condition. Data were recorded for days to 50% anthesis, days to 50% silking, anthesis-silking interval, plant height (cm) and ear height (cm), number of plants per plot, number of plants harvested, number of ears harvested, moisture content (%), field weight (kg), and grain yield (t ha-1). Results showed number of plants per plot, number of plants harvested, number of ears harvested and field weight correlated positively and significantly both phenotypically and genotypically with grain yield. Path coefficient analysis at the genotypic level also revealed field weight and days to 50% anthesis as the characters exerting the highest positive direct effect on grain yield. Therefore, maize grain yield could be improved through indirect selection for these characters.

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