Genotype by environment (G x E) interaction in cassava (Manihot esculenta Crantz) in Uganda
Genotype (G) by environment (E) interaction (GEI) in cassava was studied using 10 genotypes in a multilocational trial in Uganda at different altitudes for 2 years. The study investigated the magnitude of GEI and diagnosed the underlying causal factors of the G × E pattern. The analys...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
2009
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| Online Access: | https://hdl.handle.net/10568/90827 |
| _version_ | 1855530783322669056 |
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| author | Ntawuruhunga, Pheneas Whyte, J. Dixon, A. Rubaihayo, P.R. |
| author_browse | Dixon, A. Ntawuruhunga, Pheneas Rubaihayo, P.R. Whyte, J. |
| author_facet | Ntawuruhunga, Pheneas Whyte, J. Dixon, A. Rubaihayo, P.R. |
| author_sort | Ntawuruhunga, Pheneas |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Genotype (G) by environment (E) interaction (GEI) in cassava was studied using 10 genotypes in a multilocational trial in Uganda at different altitudes for 2 years. The study investigated the magnitude of GEI and diagnosed the underlying causal factors of the G × E pattern. The analysis of variance indicated that the effects of E, G, and GEI were significant for storage root number, storage root size, storage root girth, fresh storage root weight, and dry yield, but not for dry matter content. Additive Main Effects and Multiplicative Interactions (AMMI) was used to assist the selection and zonation of the environments into homogenous ecosystems. Genotype TMS I 92/0057 was found to have broad adaptation, high yield, and stability, with temperature being one of the underlying causal factors of the interaction. Namulonge (mid-altitude) was identified as a stable environment and could be considered as a site for broad selection. |
| format | Journal Article |
| id | CGSpace90827 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2009 |
| publishDateRange | 2009 |
| publishDateSort | 2009 |
| record_format | dspace |
| spelling | CGSpace908272023-06-12T17:07:22Z Genotype by environment (G x E) interaction in cassava (Manihot esculenta Crantz) in Uganda Ntawuruhunga, Pheneas Whyte, J. Dixon, A. Rubaihayo, P.R. cassava genotype by environment interaction ammi stability adaptability Genotype (G) by environment (E) interaction (GEI) in cassava was studied using 10 genotypes in a multilocational trial in Uganda at different altitudes for 2 years. The study investigated the magnitude of GEI and diagnosed the underlying causal factors of the G × E pattern. The analysis of variance indicated that the effects of E, G, and GEI were significant for storage root number, storage root size, storage root girth, fresh storage root weight, and dry yield, but not for dry matter content. Additive Main Effects and Multiplicative Interactions (AMMI) was used to assist the selection and zonation of the environments into homogenous ecosystems. Genotype TMS I 92/0057 was found to have broad adaptation, high yield, and stability, with temperature being one of the underlying causal factors of the interaction. Namulonge (mid-altitude) was identified as a stable environment and could be considered as a site for broad selection. 2009 2018-02-06T12:14:56Z 2018-02-06T12:14:56Z Journal Article https://hdl.handle.net/10568/90827 en Limited Access Ntawuruhunga, P., Whyte, J., Dixon, A. & Rubaihayo, P.R. (2009). Genotype by environment (G x E) interaction in cassava (Manihot esculenta Crantz) in Uganda. African Journal of Root and Tuber Crops, 7(1), 1-7 |
| spellingShingle | cassava genotype by environment interaction ammi stability adaptability Ntawuruhunga, Pheneas Whyte, J. Dixon, A. Rubaihayo, P.R. Genotype by environment (G x E) interaction in cassava (Manihot esculenta Crantz) in Uganda |
| title | Genotype by environment (G x E) interaction in cassava (Manihot esculenta Crantz) in Uganda |
| title_full | Genotype by environment (G x E) interaction in cassava (Manihot esculenta Crantz) in Uganda |
| title_fullStr | Genotype by environment (G x E) interaction in cassava (Manihot esculenta Crantz) in Uganda |
| title_full_unstemmed | Genotype by environment (G x E) interaction in cassava (Manihot esculenta Crantz) in Uganda |
| title_short | Genotype by environment (G x E) interaction in cassava (Manihot esculenta Crantz) in Uganda |
| title_sort | genotype by environment g x e interaction in cassava manihot esculenta crantz in uganda |
| topic | cassava genotype by environment interaction ammi stability adaptability |
| url | https://hdl.handle.net/10568/90827 |
| work_keys_str_mv | AT ntawuruhungapheneas genotypebyenvironmentgxeinteractionincassavamanihotesculentacrantzinuganda AT whytej genotypebyenvironmentgxeinteractionincassavamanihotesculentacrantzinuganda AT dixona genotypebyenvironmentgxeinteractionincassavamanihotesculentacrantzinuganda AT rubaihayopr genotypebyenvironmentgxeinteractionincassavamanihotesculentacrantzinuganda |