Correlation and Path Coefficient Studies of Yield and Yield Associated Traits in Bread Wheat (Triticum aestivum L.) Genotypes

Mecha, Birhanu; Alamerew, Sentayehu; Assefa, Alemayehu; Dutamo, Dargicho; Assefa, Ermias

doi:10.15406/apar.2017.06.00226

Cited by 46 publications

(31 citation statements)

References 4 publications

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“…Likewise, long flowering and maturing times negatively influenced grain yield. Similar results were found on wheat (Triticum aestivum) [49]. However, some findings showed that grain yield had highly significant positive correlation with maturity and flowering times in finger millet [50].…”

Section: Quantitative Traits Association and Partition Of Phenotypic Groups In Foniosupporting

confidence: 70%

Agromorphological Characterization Revealed Three Phenotypic Groups in a Region-Wide Germplasm of Fonio (Digitaria exilis (Kippist) Stapf) from West Africa

et al. 2020

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Fonio is an ancient orphan cereal, cultivated by resource-poor farmers in arid and semi-arid regions of West Africa, who conserved and used the cereal for nutrition and income generation. However, the extent and patterns of phenotypic variation within the fonio germplasm remain scarcely evaluated to inform breeding decisions. In this study, we used alpha lattice design to assess the phenotypic variability of 180 fonio accessions using 20 agro morphological descriptors, including both qualitative and quantitative traits at Bengou research station in 2018 and 2019. Descriptive statistics, combined analysis and multivariate analyses, including principal components analysis (PCA), hierarchical clustering, and multiple factor analysis (MFA) were performed. As results, we found significant differences among fonio accessions and among agro ecological zones of provenance for most of the quantitative traits. Furthermore, highly significant positive correlations were found between grain yield and other yield-related attributes such as harvest index and thousand seeds weight, whereas significant negative correlations were found between grain yield and flowering and maturity times. Clusters analysis revealed three phenotypic groups. Group 1 was characterized by early maturing fonio accessions with higher grain yield. Groups 2 and 3 were characterized by late maturing accessions with intermediate to moderate grain yield. The accessions from Group 1 are candidate for yield improvement and development of fonio lines with enhanced lodging resistance. Accessions from Group 2 and 3 can be improved for yield through marker-assisted selection of best thousand seed weight. This study highlights how traits are correlated within the major phenotypic groups of fonio in West Africa, and we discussed how these groups could be further exploited for improving traits of economic importance. Furthermore, this study exhibited agro morphological descriptors that discriminate fonio accessions and provide useful information for parental selection with economically important agronomic traits.

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Section: Quantitative Traits Association and Partition Of Phenotypic Groups In Foniosupporting

confidence: 70%

Agromorphological Characterization Revealed Three Phenotypic Groups in a Region-Wide Germplasm of Fonio (Digitaria exilis (Kippist) Stapf) from West Africa

et al. 2020

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“…The phenotypic correlation coefficients between the variables measured in the F 3 and F 4 generations are given in (2017) and Boussakouran et al (2021) pointed out that the best GY in semi-arid areas are the result of the genetic ability to produce more spikes per unit area associated with good spikes fertility. Slafer et al (2005) as well as Fellahi et al (2017) mentioned that the contribution to NS was more pronounced than that from NG which is formed in a more favorable period.…”

Section: Correlations Of the F 3 And F 4 Generation Traitsmentioning

confidence: 99%

Studies on the nature of relationships between grain yield and yield-related traits in durum wheat (Triticum durum Desf.) populations

Laala

Oulmi

Fellahi

et al. 2021

Rev. Fac. Nac. Agron. Medellín

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This experiment was conducted at the Field Crops Institute, Agricultural Experimental Station of Setif (ITGC-AES), Eastern semi-arid areas of Algeria, during two successive cropping seasons, 2010/11 and 2011/12. The aim of the study was to evaluate the association of yield and yield-related traits and determine the direct and indirect effects of yield-related traits on grain yield. The plant materials consisted of 330 F3 and 174 F4 durum wheat lines along with their four parents and one control cultivar, which were evaluated under rainfed conditions in a semi-arid region. Data on nine agronomic traits were recorded. Sufficient genetic variability was observed among wheat traits as indicated by the minimum and maximum mean values and confirmed by the phenotypic and genotypic coefficients of variation that took intermediate and high estimates for most of the traits evaluated both in F3 and F4 generations. A high heritability (>60%) was observed for almost all the traits studied indicating the involvement of the additive action of genes in their genetic determinism. Results of stepwise regression and path analysis showed that biological yield, harvest index and number of spikes were the most determinant components of grain yield, exhibiting high positive direct effects (0.697, 0.683 and 0.293 in F3 vs 0.695, 0.205 and 0.560 in F4, respectively) coupled with positive and significant correlations (r=0.696*, r=0.778* and r=0.127* in F3 vs r=0.686*, r=0.628* and r=0.491* in F4, respectively) with this trait. These three yield-contributing traits can be considered as suitable indirect selection criteria to improve grain yield in the subsequent generation of the wheat breeding program.

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“…In the present study, six variables including seed yield per plant, seed growth rate, days to seed fill, spikelets per spike, 1000-grain weight and days to flowering contributed above the expected average to the variability in PC1 and PC2 (table 3). Akram et al (2008), Mecha et al (2017) and Kumar et al (2020). https://doi.org/10.37992/2020.1102.063…”

Section: Resultsmentioning

confidence: 99%

Assessment of variability in phenological, morphological and yield traits in a biparental RIL population in wheat (Triticum aestivum L)

Shafi

Sofi²,

Singh³

et al. 2020

EJPB

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A HUW-234 x HUW-468 RIL population in wheat comprising 160 RIL's along with two parents and two released varieties were evaluated for phenological, morphological and seed traits in an augmented block design and variability was assessed through principal component analysis. PCA concentrated variability in first five principal components. The total variance explained with the first six PC's was 76.65 per cent. Latent roots (Eigen values) for significant PCs ranged from 3.39 (PC1) to 1.05 (PC5). The first two PC's that were used for constructing biplot graphs explained 42.77 %. The first PC contributed 25.48 per cent of total variation mainly contributed by the grain yield per plant (30.59 per cent), seed growth rate (30.44 per cent), spikelets per spike (16.15 per cent) and 1000-grain weight (16.03 per cent). The second component explained 17.29 per cent of variation contributed largely by days to seed fill (38.31 per cent), days to flowering (35.68 per cent) and seed length (11.41 per cent), while as the third, fourth and fifth component explained 15.29, 9.95 and 8.63 per cent of variations respectively. Six variables including seed yield per plant, seed growth rate, days to seed fill, spikelets per spike, 1000-grain weight and days to flowering contributed above the expected average to the variability in PC1 and PC2. Grain yield was positively correlated with seed growth rate followed by spikelets per spike, 1000-grain weight and seed breadth. A number of RILs were identified based on their superior performance for various phonological and yield traits. RILs 3, 11, 89 and 150 had superior performance for multiple traits indicating desirable segregation for various traits.

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Correlation and Path Coefficient Studies of Yield and Yield Associated Traits in Bread Wheat (Triticum aestivum L.) Genotypes

Cited by 46 publications

References 4 publications

Agromorphological Characterization Revealed Three Phenotypic Groups in a Region-Wide Germplasm of Fonio (Digitaria exilis (Kippist) Stapf) from West Africa

Agromorphological Characterization Revealed Three Phenotypic Groups in a Region-Wide Germplasm of Fonio (Digitaria exilis (Kippist) Stapf) from West Africa

Studies on the nature of relationships between grain yield and yield-related traits in durum wheat (Triticum durum Desf.) populations

Assessment of variability in phenological, morphological and yield traits in a biparental RIL population in wheat (Triticum aestivum L)

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