Assessing the Impact of Genotype-by-Environment Interactions on Agronomic Traits in Elite Cowpea Lines across Agro-Ecologies in Nigeria
The yield of cowpea varieties is affected by environmental variability. Hence, candidate varieties must be tested for yield stability before release. This study assessed the impacts of genotypes, environments, and their interaction on the performance of elite cowpea lines for key adaptive, grain yie...
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| Format: | Article |
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MDPI AG
2024-01-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/14/2/263 |
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| author | Bosede Olufunke Popoola Patrick Obia Ongom Saba B. Mohammed Abou Togola Daniel Jockson Ishaya Garba Bala Christian Fatokun Ousmane Boukar |
| author_facet | Bosede Olufunke Popoola Patrick Obia Ongom Saba B. Mohammed Abou Togola Daniel Jockson Ishaya Garba Bala Christian Fatokun Ousmane Boukar |
| author_sort | Bosede Olufunke Popoola |
| collection | DOAJ |
| description | The yield of cowpea varieties is affected by environmental variability. Hence, candidate varieties must be tested for yield stability before release. This study assessed the impacts of genotypes, environments, and their interaction on the performance of elite cowpea lines for key adaptive, grain yield, and associated traits across different locations. A total of 42 elite genotypes were evaluated in five Nigerian environments, representing various savanna ecologies, during the 2021 growing season. The experimental design employed was an alpha lattice arrangement, with each genotype replicated three times. The results revealed significant differences among genotypes, environments, and genotype-by-environment interaction (G × E) for most traits, including days to maturity, 100-seed weight, and grain yield. The genotype and genotype-by-environment interaction (GGE) biplot showed G21 (IT14K-2111-2) and G25 (IT15K-2386-1) as the most stable genotypes across the five environments, G41 (IT11K-61-82) was best adapted to Ibadan and Shika, G5 (245-1) was best adapted to Bagauda and Gumel, and G30 (IT16K-2365-1) was best adapted to Bauchi. G21 (IT14K-2111-2) and G25 (IT15K-2386-1) could be recommended across the five test environments, whereas G41 (IT11K-61-82), G30 (IT16K-2365-1), and G5 (245-1) were specific to the adapted environments. |
| first_indexed | 2024-03-07T22:46:52Z |
| format | Article |
| id | doaj.art-b7bd162880d14b48859abf9faf6a3184 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-07T22:46:52Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-b7bd162880d14b48859abf9faf6a31842024-02-23T15:04:01ZengMDPI AGAgronomy2073-43952024-01-0114226310.3390/agronomy14020263Assessing the Impact of Genotype-by-Environment Interactions on Agronomic Traits in Elite Cowpea Lines across Agro-Ecologies in NigeriaBosede Olufunke Popoola0Patrick Obia Ongom1Saba B. Mohammed2Abou Togola3Daniel Jockson Ishaya4Garba Bala5Christian Fatokun6Ousmane Boukar7International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan 200285, NigeriaInternational Institute of Tropical Agriculture (IITA), PMB 3112, Kano 700223, NigeriaInternational Institute of Tropical Agriculture (IITA), PMB 3112, Kano 700223, NigeriaInternational Institute of Tropical Agriculture (IITA), PMB 3112, Kano 700223, NigeriaInternational Institute of Tropical Agriculture (IITA), PMB 3112, Kano 700223, NigeriaInternational Institute of Tropical Agriculture (IITA), PMB 3112, Kano 700223, NigeriaInternational Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan 200285, NigeriaInternational Institute of Tropical Agriculture (IITA), PMB 3112, Kano 700223, NigeriaThe yield of cowpea varieties is affected by environmental variability. Hence, candidate varieties must be tested for yield stability before release. This study assessed the impacts of genotypes, environments, and their interaction on the performance of elite cowpea lines for key adaptive, grain yield, and associated traits across different locations. A total of 42 elite genotypes were evaluated in five Nigerian environments, representing various savanna ecologies, during the 2021 growing season. The experimental design employed was an alpha lattice arrangement, with each genotype replicated three times. The results revealed significant differences among genotypes, environments, and genotype-by-environment interaction (G × E) for most traits, including days to maturity, 100-seed weight, and grain yield. The genotype and genotype-by-environment interaction (GGE) biplot showed G21 (IT14K-2111-2) and G25 (IT15K-2386-1) as the most stable genotypes across the five environments, G41 (IT11K-61-82) was best adapted to Ibadan and Shika, G5 (245-1) was best adapted to Bagauda and Gumel, and G30 (IT16K-2365-1) was best adapted to Bauchi. G21 (IT14K-2111-2) and G25 (IT15K-2386-1) could be recommended across the five test environments, whereas G41 (IT11K-61-82), G30 (IT16K-2365-1), and G5 (245-1) were specific to the adapted environments.https://www.mdpi.com/2073-4395/14/2/263cowpea (<i>Vigna unguiculata</i>)G × E interactionsstabilityGGE biplot |
| spellingShingle | Bosede Olufunke Popoola Patrick Obia Ongom Saba B. Mohammed Abou Togola Daniel Jockson Ishaya Garba Bala Christian Fatokun Ousmane Boukar Assessing the Impact of Genotype-by-Environment Interactions on Agronomic Traits in Elite Cowpea Lines across Agro-Ecologies in Nigeria Agronomy cowpea (<i>Vigna unguiculata</i>) G × E interactions stability GGE biplot |
| title | Assessing the Impact of Genotype-by-Environment Interactions on Agronomic Traits in Elite Cowpea Lines across Agro-Ecologies in Nigeria |
| title_full | Assessing the Impact of Genotype-by-Environment Interactions on Agronomic Traits in Elite Cowpea Lines across Agro-Ecologies in Nigeria |
| title_fullStr | Assessing the Impact of Genotype-by-Environment Interactions on Agronomic Traits in Elite Cowpea Lines across Agro-Ecologies in Nigeria |
| title_full_unstemmed | Assessing the Impact of Genotype-by-Environment Interactions on Agronomic Traits in Elite Cowpea Lines across Agro-Ecologies in Nigeria |
| title_short | Assessing the Impact of Genotype-by-Environment Interactions on Agronomic Traits in Elite Cowpea Lines across Agro-Ecologies in Nigeria |
| title_sort | assessing the impact of genotype by environment interactions on agronomic traits in elite cowpea lines across agro ecologies in nigeria |
| topic | cowpea (<i>Vigna unguiculata</i>) G × E interactions stability GGE biplot |
| url | https://www.mdpi.com/2073-4395/14/2/263 |
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