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Genotype x Environment Interaction and Stability Analysis for Gran Yield of Diallel Cross Maize Hybrids Across Tropical Medium and Highland Ecologies

Received: 5 April 2018     Accepted: 23 April 2018     Published: 21 August 2018
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Abstract

Genotype x environment (G x E) interaction is the differential performance of genotypes across environments, especially in the tropics where seasonal and spatial variability is large. This results in serious challenges of product selection across environments. The objectives of this study were to determine G x E interaction and yield stability of new diallel cross maize hybrids and to identify suitable genotypes for the medium and highland ecologies in Rwanda. Forty- five diallel cross maize hybrids and three commercial checks were evaluated in four locations representing the major agro-ecologies of Rwanda over three seasons. The data were subjected to genotype and genotype by environment interaction (GGE) biplot analysis, using Genstat statistical package. The analysis revealed two mega-environments which discriminated the hybrids. Two genotypes 3 (S1/S4) and 25 (S4/S5) displayed specific adaptation; qualifying them as candidates for further testing in respective mega-environments. Genotypes 3 (S1/S4) and 29 (S4/S9) demonstrated high yield and stability. Overall, the study revealed crossover interaction and there is need to breed for both broad and specific adaptation in these medium and high altitude environments.

Published in Journal of Plant Sciences (Volume 6, Issue 3)
DOI 10.11648/j.jps.20180603.14
Page(s) 101-106
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), 2018. Published by Science Publishing Group

Keywords

Biplot, Genotype by Environment Interaction, Grain Yield, Maize Hybrids, Stability

References
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Cite This Article
  • APA Style

    Alphonse Nyombayire, John Derera, Julia Sibiya, Claver Ngaboyisonga. (2018). Genotype x Environment Interaction and Stability Analysis for Gran Yield of Diallel Cross Maize Hybrids Across Tropical Medium and Highland Ecologies. Journal of Plant Sciences, 6(3), 101-106. https://doi.org/10.11648/j.jps.20180603.14

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    ACS Style

    Alphonse Nyombayire; John Derera; Julia Sibiya; Claver Ngaboyisonga. Genotype x Environment Interaction and Stability Analysis for Gran Yield of Diallel Cross Maize Hybrids Across Tropical Medium and Highland Ecologies. J. Plant Sci. 2018, 6(3), 101-106. doi: 10.11648/j.jps.20180603.14

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    AMA Style

    Alphonse Nyombayire, John Derera, Julia Sibiya, Claver Ngaboyisonga. Genotype x Environment Interaction and Stability Analysis for Gran Yield of Diallel Cross Maize Hybrids Across Tropical Medium and Highland Ecologies. J Plant Sci. 2018;6(3):101-106. doi: 10.11648/j.jps.20180603.14

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  • @article{10.11648/j.jps.20180603.14,
      author = {Alphonse Nyombayire and John Derera and Julia Sibiya and Claver Ngaboyisonga},
      title = {Genotype x Environment Interaction and Stability Analysis for Gran Yield of Diallel Cross Maize Hybrids Across Tropical Medium and Highland Ecologies},
      journal = {Journal of Plant Sciences},
      volume = {6},
      number = {3},
      pages = {101-106},
      doi = {10.11648/j.jps.20180603.14},
      url = {https://doi.org/10.11648/j.jps.20180603.14},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jps.20180603.14},
      abstract = {Genotype x environment (G x E) interaction is the differential performance of genotypes across environments, especially in the tropics where seasonal and spatial variability is large. This results in serious challenges of product selection across environments. The objectives of this study were to determine G x E interaction and yield stability of new diallel cross maize hybrids and to identify suitable genotypes for the medium and highland ecologies in Rwanda. Forty- five diallel cross maize hybrids and three commercial checks were evaluated in four locations representing the major agro-ecologies of Rwanda over three seasons. The data were subjected to genotype and genotype by environment interaction (GGE) biplot analysis, using Genstat statistical package. The analysis revealed two mega-environments which discriminated the hybrids. Two genotypes 3 (S1/S4) and 25 (S4/S5) displayed specific adaptation; qualifying them as candidates for further testing in respective mega-environments. Genotypes 3 (S1/S4) and 29 (S4/S9) demonstrated high yield and stability. Overall, the study revealed crossover interaction and there is need to breed for both broad and specific adaptation in these medium and high altitude environments.},
     year = {2018}
    }
    

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  • TY  - JOUR
    T1  - Genotype x Environment Interaction and Stability Analysis for Gran Yield of Diallel Cross Maize Hybrids Across Tropical Medium and Highland Ecologies
    AU  - Alphonse Nyombayire
    AU  - John Derera
    AU  - Julia Sibiya
    AU  - Claver Ngaboyisonga
    Y1  - 2018/08/21
    PY  - 2018
    N1  - https://doi.org/10.11648/j.jps.20180603.14
    DO  - 10.11648/j.jps.20180603.14
    T2  - Journal of Plant Sciences
    JF  - Journal of Plant Sciences
    JO  - Journal of Plant Sciences
    SP  - 101
    EP  - 106
    PB  - Science Publishing Group
    SN  - 2331-0731
    UR  - https://doi.org/10.11648/j.jps.20180603.14
    AB  - Genotype x environment (G x E) interaction is the differential performance of genotypes across environments, especially in the tropics where seasonal and spatial variability is large. This results in serious challenges of product selection across environments. The objectives of this study were to determine G x E interaction and yield stability of new diallel cross maize hybrids and to identify suitable genotypes for the medium and highland ecologies in Rwanda. Forty- five diallel cross maize hybrids and three commercial checks were evaluated in four locations representing the major agro-ecologies of Rwanda over three seasons. The data were subjected to genotype and genotype by environment interaction (GGE) biplot analysis, using Genstat statistical package. The analysis revealed two mega-environments which discriminated the hybrids. Two genotypes 3 (S1/S4) and 25 (S4/S5) displayed specific adaptation; qualifying them as candidates for further testing in respective mega-environments. Genotypes 3 (S1/S4) and 29 (S4/S9) demonstrated high yield and stability. Overall, the study revealed crossover interaction and there is need to breed for both broad and specific adaptation in these medium and high altitude environments.
    VL  - 6
    IS  - 3
    ER  - 

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Author Information
  • African Centre for Crop Improvement, University of KwaZulu-Natal, Pietermaritzburg, South Africa

  • African Centre for Crop Improvement, University of KwaZulu-Natal, Pietermaritzburg, South Africa

  • African Centre for Crop Improvement, University of KwaZulu-Natal, Pietermaritzburg, South Africa

  • Reaserch Department, Rwanda Agriculture Board, Kigali, Rwanda

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