Genotypic Correlation Coefficients among Growth, Yield and Quality Parameters in Amaranthus Genotypes (Amaranthus tricolor L.)

Sagar, Kiran; Hanchinamani, C. N.; Imamsaheb, S. J.; Nishani, Sandhyarani; Ramanagouda, S. H.

doi:10.20546/ijcmas.2018.708.282

Cited by 5 publications

(8 citation statements)

References 9 publications

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“…The results suggest the possibility of simultaneous improvement of these traits in improving grain yield. Similar results were reported by [17].…”

Section: Discussionsupporting

confidence: 92%

“…During the study a narrow difference between the genotypic and phenotypic correlation coefficients was observed for various traits in the present findings and thus indicates the lesser influence of environment in the expression of these traits and presence of strong inherent association among the traits. Similar findings were also reported by [17]. Grain yield exhibited a highly significant and positive association with inflorescence length.…”

Section: Discussionsupporting

confidence: 90%

“…As such, for rational approach towards the improvement of yield, selection has to be made for the components of yield, since there may not be genes for yield, but only for yield components. Genetic correlations between two characters arise because of linkage, pleiotropy or developmentally induced functional relationship [17]. Hence, it has greater significance and could be effectively utilized in formulating an effective selection scheme.…”

Section: Discussionmentioning

confidence: 99%

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Agromophological Characterisation of Amaranth Accessions from Malawi

Nyasulu¹,

Sefasi²,

Chimzinga³

et al. 2021

AJPS

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Five amaranth (Amaranthus spp.) accessions from central and southern region of Malawi were characterised at Lilongwe University of Agriculture and Natural Resources using agro-morphological traits. A total of thirteen descriptors, defined by Plant Genetic Resources Institute (IPGRI), were used to characterise the amaranth accessions under study. Field experiments were carried out for two seasons in August to November, 2018 and January to March, 2019. The experiments were laid out in a Randomised Complete Block Design (RCBD), which was replicated four times. The qualitative (plant growth habit, leaf colour, inflorescence colour, stem colour, inflorescence spininess, seed colour) and quantitative traits (plant height, stem girth, leaf length, leaf width, inflorescence length, days to 80% flowering, grain yield, leaf yield, and days to 80% maturity) evaluated were significant in defining the uniqueness of different amaranth accessions evaluated. Significant differences (P < 0.05) obtained from analysis of variance were observed in all the parameters studied. Correlation analysis was conducted using Genstat statistical package version 18 while cluster analysis was done using R statistical software. The agro-morphological characterisation results showed a wide range of variation for most of the qualitative characters. Wide variability was present in all the qualitative characters except for plant growth habit where all the accessions exhibited erect plant growth habit. These results point to high possibility of genetic diversity of amaranth accessions in Malawi, it could be exploited in future breeding purposes and deserving conservation.

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“…The results suggest the possibility of simultaneous improvement of these traits in improving grain yield. Similar results were reported by [17].…”

Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Agromophological Characterisation of Amaranth Accessions from Malawi

Nyasulu¹,

Sefasi²,

Chimzinga³

et al. 2021

AJPS

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show abstract

“…2, Table S7). Grain yield was significantly and positively correlated with inflorescence length (r = 0.28, P < 0.001), 1000-seed weight (r = 0.27, P < 0.05), and cross area of the seed (r = 0.24, P < 0.05), which is consistent with results on grain Amaranths in Africa [36,46,57]. Principally, a correlation between two traits can derive from developmental interaction, or from the genetic linkage.…”

Section: Plant Height Is Positively and Specifically Correlated With ...supporting

confidence: 86%

A rapid, simple, and reliable assay to authenticate Peruvian kiwicha (A. caudatus) for food applications

Kanbar

Beisel

Wetters

et al. 2022

Eur Food Res Technol

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Amaranth has acquired great economic impact as functional food, with species originating from Mexico dominating global trade. In contrast, the Peruvian A. caudatus (kiwicha) has been vastly neglected, although it is endowed with very promising nutritive traits. Morphological plasticity and taxonomic ambiguities render authentication of Amaranth difficult, such that the identity of commercial samples is often unclear. To safeguard the authenticity of kiwicha and, thus, consumer safety, we characterised a germplasm collection of 84 Amaranth accessions on both, the morphological and the genetic level. We show that kiwicha can be delineated phenotypically from other species by its late flowering, taller posture, and lower grain yields. Instead, flower and seed color, often used as proxy for identity, do not qualify as taxonomic markers. Using the plastidic barcoding marker psbA-trnH igs we were able to identify a specific Single Nucleotide Polymorphism (SNP) that separated kiwicha from all other species of Amaranth. This allowed us to develop a sequencing-free authentication assay using an Amplified Refractory Mutation System (ARMS) strategy. As a result kiwicha in commercial samples can be authenticated by a single duplex-PCR yielding a diagnostic side band reporting A. caudatus against all other species of Amaranthus. This fingerprinting assay will help to develop the nutritive potential of kiwicha and to safeguard seed material for A. caudatus against adulteration by the far more prevalent species from Mexico.

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“…In the current trial, from the two sets of correlation coefficients, 61(50.83%) of the 120 possible pairs of trait comparisons across traits showed that the genotypic correlation coefficient was higher than the corresponding phenotypic correlation coefficient, which showed that the association was largely due to genetic factors among various traits, and that enhanced genetic inherent association 30 – 32 , this aids in determining the attributes that will be used in the breeding scheme. Moreover, genetic correlations between two characters arise because of linkage, pleiotropic or developmentally induced functional relationships 33 . As a result, it is more important and may be used to build a successful selection system.…”

Section: Discussionmentioning

confidence: 99%

Study on characters associations and path coefficient analysis for quantitative traits of amaranth genotypes from Ethiopia

Yeshitila,

Gedebo,

Degu

et al. 2023

Sci Rep

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Selection based on yield alone may not be effective for yield improvement in plant breeding programs. Thus, in order to progress the genetic gains during selection, yield should be considered along with potential yield contributing traits. The objective of this study was to improve the genotype of amaranth and increase the effectiveness of selection in the program by identifying the correlation and path coefficients between yield and its relevant attributes. On 120 genotypes of amaranth planted during two growing seasons in 2020 and 2021, the study was carried out using an alpha lattice design with two replications. The results revealed significant positive phenotypic and genotypic associations on leaf yield, with leaf area, leaf breadth, branch number, leaf number, plant height at flowering, and grain yield all having positive direct effects. Similar strong positive phenotypic and genotypic relationships were found for grain yield and grain sink filling rates. Using path coefficient analysis, the direct and indirect effects of yield-related traits on yield were also determined. In addition to having a strong direct impact on grain output, the grain sink filling rates showed both phenotypic and genotypic evidence of substantial positive relationships with grain yield. It was further suggested that leaf yield in amaranth genotypes may increase through the indirect selection of plant height at maturity, leaf length, and terminal inflorescence lateral length, which showed such significant indirect influences, mostly through leaf area, days to maturity, and days to emergence, which displayed such strong indirect effects, primarily through plant height at flowering. This study consequently shows the need for traits with significant positive indirect impacts via leaf area to be considered indirect selection criteria for improving leaf yield in amaranth genotypes. The grain sink filling rate also significantly improved grain yield indirectly at both the phenotypic and genotypic levels, mainly via days to flowering and leaf yield. This demonstrated that selection that mainly targeted days to flowering, leaf yield, and grain sink filling rate would ultimately boost the grain yield in amaranth genotypes.

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Genotypic Correlation Coefficients among Growth, Yield and Quality Parameters in Amaranthus Genotypes (Amaranthus tricolor L.)

Cited by 5 publications

References 9 publications

Agromophological Characterisation of Amaranth Accessions from Malawi

Agromophological Characterisation of Amaranth Accessions from Malawi

A rapid, simple, and reliable assay to authenticate Peruvian kiwicha (A. caudatus) for food applications

Study on characters associations and path coefficient analysis for quantitative traits of amaranth genotypes from Ethiopia

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