Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria
Anthracnose disease, caused by the pathogen Collectotrichum gloeosporioides Penz., is a serious challenge to the cultivation of Dioscorea alata, a major source of food and income for millions of farm households in the tropics. Five breeder’s lines and eighteen landraces of D. alata from IITA’s germp...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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2008
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| Acceso en línea: | https://hdl.handle.net/10568/92238 |
| _version_ | 1855539962961723392 |
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| author | Aduramigba-Modupe, A.O. Asiedu, Robert Odebode, A.C. |
| author_browse | Aduramigba-Modupe, A.O. Asiedu, Robert Odebode, A.C. |
| author_facet | Aduramigba-Modupe, A.O. Asiedu, Robert Odebode, A.C. |
| author_sort | Aduramigba-Modupe, A.O. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Anthracnose disease, caused by the pathogen Collectotrichum gloeosporioides Penz., is a serious challenge to the cultivation of Dioscorea alata, a major source of food and income for millions of farm households in the tropics. Five breeder’s lines and eighteen landraces of D. alata from IITA’s germplasm collection were screened in the field in three agroecological zones (southern guinea savanna, derived savannah and the humid forest) of Nigeria for two years. The objective was to study their reactions to anthracnose disease and investigate the influences of environment (E) and genotype x environment (G x E) interactions on these using the Additive Main Effects and Multiplicative Interaction (AMMI) model. Environments (E), obtained as location x year combination, genotypes (G) and G x E interactions were highly significant (P<0.01) for severity of anthracnose disease and accounted for 48, 26.2 and 25.8% of the treatment (G x E combination) sum of squares, respectively. Incidence and severity of foliar symptoms were assessed on three occasions during each growing season. The disease was most severe at Umudike in the humid forest, followed by Ibadan (derived savannah) and Mokwa (southern guinea savannah). The severity was also higher in 1999 across all locations than in 2000. TDa 289 and TDa 294 were identified as the most resistant genotypes. TDa 297, TDa 9500328, TDa 9500197 and TDa 9500010 were stable in their reactions to anthracnose disease across the environments. These lines could be useful in breeding for increased and more stable resistance to anthracnose disease in yam breeding programmes. |
| format | Journal Article |
| id | CGSpace92238 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| record_format | dspace |
| spelling | CGSpace922382023-02-15T07:15:43Z Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria Aduramigba-Modupe, A.O. Asiedu, Robert Odebode, A.C. dioscorea alata anthracnose ammi genotype x environment interactions disease resistance Anthracnose disease, caused by the pathogen Collectotrichum gloeosporioides Penz., is a serious challenge to the cultivation of Dioscorea alata, a major source of food and income for millions of farm households in the tropics. Five breeder’s lines and eighteen landraces of D. alata from IITA’s germplasm collection were screened in the field in three agroecological zones (southern guinea savanna, derived savannah and the humid forest) of Nigeria for two years. The objective was to study their reactions to anthracnose disease and investigate the influences of environment (E) and genotype x environment (G x E) interactions on these using the Additive Main Effects and Multiplicative Interaction (AMMI) model. Environments (E), obtained as location x year combination, genotypes (G) and G x E interactions were highly significant (P<0.01) for severity of anthracnose disease and accounted for 48, 26.2 and 25.8% of the treatment (G x E combination) sum of squares, respectively. Incidence and severity of foliar symptoms were assessed on three occasions during each growing season. The disease was most severe at Umudike in the humid forest, followed by Ibadan (derived savannah) and Mokwa (southern guinea savannah). The severity was also higher in 1999 across all locations than in 2000. TDa 289 and TDa 294 were identified as the most resistant genotypes. TDa 297, TDa 9500328, TDa 9500197 and TDa 9500010 were stable in their reactions to anthracnose disease across the environments. These lines could be useful in breeding for increased and more stable resistance to anthracnose disease in yam breeding programmes. 2008 2018-04-24T08:40:19Z 2018-04-24T08:40:19Z Journal Article https://hdl.handle.net/10568/92238 en Limited Access Aduramigba-Modupe, A.O., Asiedu, R. & Odebode, A.C. (2008). Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria. Journal of Food, Agriculture & Environment. |
| spellingShingle | dioscorea alata anthracnose ammi genotype x environment interactions disease resistance Aduramigba-Modupe, A.O. Asiedu, Robert Odebode, A.C. Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria |
| title | Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria |
| title_full | Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria |
| title_fullStr | Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria |
| title_full_unstemmed | Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria |
| title_short | Reaction of Dioscorea alata (water yam) to anthracnose disease in Nigeria |
| title_sort | reaction of dioscorea alata water yam to anthracnose disease in nigeria |
| topic | dioscorea alata anthracnose ammi genotype x environment interactions disease resistance |
| url | https://hdl.handle.net/10568/92238 |
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