Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (<i>Arachis hypogaea</i> L.) Genotypes

Sintayehu Gedifew

doi:doi:10.11648/j.abb.20241204.14

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Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (Arachis hypogaea L.) Genotypes

Sintayehu Gedifew^*

Published in Advances in Bioscience and Bioengineering (Volume 12, Issue 4)

Received: 16 November 2024 Accepted: 5 December 2024 Published: 27 December 2024

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Abstract

Groundnut (Arachis hypogaea L.), or peanut, is a self-pollinating legume valued for its oil-rich kernels and nitrogen-fixing roots. Given the limited availability of enriched germplasm in Ethiopia, indirect selection through association studies is pivotal for identifying traits linked to high kernel yield. This study evaluated fifteen groundnut genotypes using a Randomized Complete Block Design with three replications to analyze correlations and path coefficients for yield improvement. Significant differences among genotypes were observed for key traits, including days to flowering and maturity, number of mature pods per plant, 100-kernel weight, and kernel yield, indicating the presence of variability among the genotypes in terms of these traits. Correlation analysis revealed a significant negative phenotypic correlation between kernel yield and days to maturity, but positive correlations with number of mature pods per plant and number of kernels per pod. The result revealed that late maturing genotypes produce high number of pods in turn exhibit higher kernel yield than early maturing ones. Genotypic correlations reinforced these findings, highlighting number of mature pods per plant as a critical determinant of yield. Path coefficient analysis indicated that the number of mature pods per plant had the highest direct positive effect on kernel yield, suggesting that enhancing this trait could significantly boost productivity. These results underscore the importance of selecting for high number of mature pods per plant in groundnut breeding programs to enhance kernel yield.

Published in	Advances in Bioscience and Bioengineering (Volume 12, Issue 4)
DOI	10.11648/j.abb.20241204.14
Page(s)	98-104
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Genotypic Correlation, Kernel Yield, Phenotypic Correlation, Pod Per Plant, Shelling Percentage

References

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APA Style

Gedifew, S. (2024). Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (Arachis hypogaea L.) Genotypes. Advances in Bioscience and Bioengineering, 12(4), 98-104. https://doi.org/10.11648/j.abb.20241204.14

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ACS Style

Gedifew, S. Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (Arachis hypogaea L.) Genotypes. Adv. BioSci. Bioeng. 2024, 12(4), 98-104. doi: 10.11648/j.abb.20241204.14

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AMA Style

Gedifew S. Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (Arachis hypogaea L.) Genotypes. Adv BioSci Bioeng. 2024;12(4):98-104. doi: 10.11648/j.abb.20241204.14

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@article{10.11648/j.abb.20241204.14,
  author = {Sintayehu Gedifew},
  title = {Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (Arachis hypogaea L.) Genotypes
},
  journal = {Advances in Bioscience and Bioengineering},
  volume = {12},
  number = {4},
  pages = {98-104},
  doi = {10.11648/j.abb.20241204.14},
  url = {https://doi.org/10.11648/j.abb.20241204.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.abb.20241204.14},
  abstract = {Groundnut (Arachis hypogaea L.), or peanut, is a self-pollinating legume valued for its oil-rich kernels and nitrogen-fixing roots. Given the limited availability of enriched germplasm in Ethiopia, indirect selection through association studies is pivotal for identifying traits linked to high kernel yield. This study evaluated fifteen groundnut genotypes using a Randomized Complete Block Design with three replications to analyze correlations and path coefficients for yield improvement. Significant differences among genotypes were observed for key traits, including days to flowering and maturity, number of mature pods per plant, 100-kernel weight, and kernel yield, indicating the presence of variability among the genotypes in terms of these traits. Correlation analysis revealed a significant negative phenotypic correlation between kernel yield and days to maturity, but positive correlations with number of mature pods per plant and number of kernels per pod. The result revealed that late maturing genotypes produce high number of pods in turn exhibit higher kernel yield than early maturing ones. Genotypic correlations reinforced these findings, highlighting number of mature pods per plant as a critical determinant of yield. Path coefficient analysis indicated that the number of mature pods per plant had the highest direct positive effect on kernel yield, suggesting that enhancing this trait could significantly boost productivity. These results underscore the importance of selecting for high number of mature pods per plant in groundnut breeding programs to enhance kernel yield.
},
 year = {2024}
}

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TY  - JOUR
T1  - Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (Arachis hypogaea L.) Genotypes

AU  - Sintayehu Gedifew
Y1  - 2024/12/27
PY  - 2024
N1  - https://doi.org/10.11648/j.abb.20241204.14
DO  - 10.11648/j.abb.20241204.14
T2  - Advances in Bioscience and Bioengineering
JF  - Advances in Bioscience and Bioengineering
JO  - Advances in Bioscience and Bioengineering
SP  - 98
EP  - 104
PB  - Science Publishing Group
SN  - 2330-4162
UR  - https://doi.org/10.11648/j.abb.20241204.14
AB  - Groundnut (Arachis hypogaea L.), or peanut, is a self-pollinating legume valued for its oil-rich kernels and nitrogen-fixing roots. Given the limited availability of enriched germplasm in Ethiopia, indirect selection through association studies is pivotal for identifying traits linked to high kernel yield. This study evaluated fifteen groundnut genotypes using a Randomized Complete Block Design with three replications to analyze correlations and path coefficients for yield improvement. Significant differences among genotypes were observed for key traits, including days to flowering and maturity, number of mature pods per plant, 100-kernel weight, and kernel yield, indicating the presence of variability among the genotypes in terms of these traits. Correlation analysis revealed a significant negative phenotypic correlation between kernel yield and days to maturity, but positive correlations with number of mature pods per plant and number of kernels per pod. The result revealed that late maturing genotypes produce high number of pods in turn exhibit higher kernel yield than early maturing ones. Genotypic correlations reinforced these findings, highlighting number of mature pods per plant as a critical determinant of yield. Path coefficient analysis indicated that the number of mature pods per plant had the highest direct positive effect on kernel yield, suggesting that enhancing this trait could significantly boost productivity. These results underscore the importance of selecting for high number of mature pods per plant in groundnut breeding programs to enhance kernel yield.

VL  - 12
IS  - 4
ER  -

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Author Information

Sintayehu Gedifew

Ethiopian Institute of Agricultural Research, Assosa Agricultural Research Center, Assosa, Ethiopia

Contact Email

http://orcid.org/0000-0002-8208-2702

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Plain Text BibTeX RIS

APA Style

Gedifew, S. (2024). Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (Arachis hypogaea L.) Genotypes. Advances in Bioscience and Bioengineering, 12(4), 98-104. https://doi.org/10.11648/j.abb.20241204.14

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ACS Style

Gedifew, S. Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (Arachis hypogaea L.) Genotypes. Adv. BioSci. Bioeng. 2024, 12(4), 98-104. doi: 10.11648/j.abb.20241204.14

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AMA Style

Gedifew S. Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (Arachis hypogaea L.) Genotypes. Adv BioSci Bioeng. 2024;12(4):98-104. doi: 10.11648/j.abb.20241204.14

Copy | Download

@article{10.11648/j.abb.20241204.14,
  author = {Sintayehu Gedifew},
  title = {Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (Arachis hypogaea L.) Genotypes
},
  journal = {Advances in Bioscience and Bioengineering},
  volume = {12},
  number = {4},
  pages = {98-104},
  doi = {10.11648/j.abb.20241204.14},
  url = {https://doi.org/10.11648/j.abb.20241204.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.abb.20241204.14},
  abstract = {Groundnut (Arachis hypogaea L.), or peanut, is a self-pollinating legume valued for its oil-rich kernels and nitrogen-fixing roots. Given the limited availability of enriched germplasm in Ethiopia, indirect selection through association studies is pivotal for identifying traits linked to high kernel yield. This study evaluated fifteen groundnut genotypes using a Randomized Complete Block Design with three replications to analyze correlations and path coefficients for yield improvement. Significant differences among genotypes were observed for key traits, including days to flowering and maturity, number of mature pods per plant, 100-kernel weight, and kernel yield, indicating the presence of variability among the genotypes in terms of these traits. Correlation analysis revealed a significant negative phenotypic correlation between kernel yield and days to maturity, but positive correlations with number of mature pods per plant and number of kernels per pod. The result revealed that late maturing genotypes produce high number of pods in turn exhibit higher kernel yield than early maturing ones. Genotypic correlations reinforced these findings, highlighting number of mature pods per plant as a critical determinant of yield. Path coefficient analysis indicated that the number of mature pods per plant had the highest direct positive effect on kernel yield, suggesting that enhancing this trait could significantly boost productivity. These results underscore the importance of selecting for high number of mature pods per plant in groundnut breeding programs to enhance kernel yield.
},
 year = {2024}
}

Copy | Download

TY  - JOUR
T1  - Trait Correlations and Path Analysis for Kernel Yield Improvement in Groundnut (Arachis hypogaea L.) Genotypes

AU  - Sintayehu Gedifew
Y1  - 2024/12/27
PY  - 2024
N1  - https://doi.org/10.11648/j.abb.20241204.14
DO  - 10.11648/j.abb.20241204.14
T2  - Advances in Bioscience and Bioengineering
JF  - Advances in Bioscience and Bioengineering
JO  - Advances in Bioscience and Bioengineering
SP  - 98
EP  - 104
PB  - Science Publishing Group
SN  - 2330-4162
UR  - https://doi.org/10.11648/j.abb.20241204.14
AB  - Groundnut (Arachis hypogaea L.), or peanut, is a self-pollinating legume valued for its oil-rich kernels and nitrogen-fixing roots. Given the limited availability of enriched germplasm in Ethiopia, indirect selection through association studies is pivotal for identifying traits linked to high kernel yield. This study evaluated fifteen groundnut genotypes using a Randomized Complete Block Design with three replications to analyze correlations and path coefficients for yield improvement. Significant differences among genotypes were observed for key traits, including days to flowering and maturity, number of mature pods per plant, 100-kernel weight, and kernel yield, indicating the presence of variability among the genotypes in terms of these traits. Correlation analysis revealed a significant negative phenotypic correlation between kernel yield and days to maturity, but positive correlations with number of mature pods per plant and number of kernels per pod. The result revealed that late maturing genotypes produce high number of pods in turn exhibit higher kernel yield than early maturing ones. Genotypic correlations reinforced these findings, highlighting number of mature pods per plant as a critical determinant of yield. Path coefficient analysis indicated that the number of mature pods per plant had the highest direct positive effect on kernel yield, suggesting that enhancing this trait could significantly boost productivity. These results underscore the importance of selecting for high number of mature pods per plant in groundnut breeding programs to enhance kernel yield.

VL  - 12
IS  - 4
ER  -

Copy | Download