Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades
A field study was conducted to determine the rate of genetic improvement in grain and fodder yields of cowpea genotypes developed in the Nigerian Sudan savannas from 1970 to 2004. Results showed that grain yield ranged from 568 kg/ha for an old variety TVX3236 to 1851 kg/ha for a recently released v...
| Autores principales: | , , , , , , |
|---|---|
| Formato: | Conference Proceedings |
| Lenguaje: | Inglés |
| Publicado: |
International Institute of Tropical Agriculture
2012
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/80471 |
| _version_ | 1855521837662863360 |
|---|---|
| author | Kamara, A.Y. Ewansiha, S.U. Ajeigbe, Hakeem A. Okechukwu, R.U. Tefera, H. Boukar, O. Omoigui, L.O. |
| author_browse | Ajeigbe, Hakeem A. Boukar, O. Ewansiha, S.U. Kamara, A.Y. Okechukwu, R.U. Omoigui, L.O. Tefera, H. |
| author_facet | Kamara, A.Y. Ewansiha, S.U. Ajeigbe, Hakeem A. Okechukwu, R.U. Tefera, H. Boukar, O. Omoigui, L.O. |
| author_sort | Kamara, A.Y. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A field study was conducted to determine the rate of genetic improvement in grain and fodder yields of cowpea genotypes developed in the Nigerian Sudan savannas from 1970 to 2004. Results showed that grain yield ranged from 568 kg/ha for an old variety TVX3236 to 1851 kg/ha for a recently released variety IT04K-321-2. The average rate of increase has been 28 kg/ha/year, which corresponds to a genetic gain of 3.6%. Fodder yield ranged from 1363 kg/ha for a variety released in 1976 (TVX1836-0131) to 3346 kg/ha for IT98k-476-8 released in 1998 corresponding to a genetic gain of 1.96%. This indicated that
selection for dual-purpose cowpea varieties with increased fodder as well as grain yields has been successful. Total dry matter, fodder yield, harvest index, and 100-seed weight were significantly correlated with grain yield. The strong relationship between grain and fodder yields showed the success made in selecting for dual-purpose cowpea varieties. |
| format | Conference Proceedings |
| id | CGSpace80471 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | International Institute of Tropical Agriculture |
| publisherStr | International Institute of Tropical Agriculture |
| record_format | dspace |
| spelling | CGSpace804712023-02-15T06:36:00Z Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades Kamara, A.Y. Ewansiha, S.U. Ajeigbe, Hakeem A. Okechukwu, R.U. Tefera, H. Boukar, O. Omoigui, L.O. cowpeas grain legumes leguminous crop fodder yield yield genetic A field study was conducted to determine the rate of genetic improvement in grain and fodder yields of cowpea genotypes developed in the Nigerian Sudan savannas from 1970 to 2004. Results showed that grain yield ranged from 568 kg/ha for an old variety TVX3236 to 1851 kg/ha for a recently released variety IT04K-321-2. The average rate of increase has been 28 kg/ha/year, which corresponds to a genetic gain of 3.6%. Fodder yield ranged from 1363 kg/ha for a variety released in 1976 (TVX1836-0131) to 3346 kg/ha for IT98k-476-8 released in 1998 corresponding to a genetic gain of 1.96%. This indicated that selection for dual-purpose cowpea varieties with increased fodder as well as grain yields has been successful. Total dry matter, fodder yield, harvest index, and 100-seed weight were significantly correlated with grain yield. The strong relationship between grain and fodder yields showed the success made in selecting for dual-purpose cowpea varieties. 2012 2017-03-22T12:25:17Z 2017-03-22T12:25:17Z Conference Proceedings https://hdl.handle.net/10568/80471 en Limited Access International Institute of Tropical Agriculture Kamara, A.Y., Ewansiha, S.U., Ajeigbe, A.A., Okechukwu, R., Tefera, H., Boukar, O. & Omoigui, L.O. (2012). Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades. In: Proceedings of the Fifth World Cowpea Conference on improving livelihoods in the cowpea value chain through advancement in science, held in Saly: innovative research along the cowpea value chain, (pp. 179-188), 27 Sept. - 1 October, Ibadan, Nigeria. |
| spellingShingle | cowpeas grain legumes leguminous crop fodder yield yield genetic Kamara, A.Y. Ewansiha, S.U. Ajeigbe, Hakeem A. Okechukwu, R.U. Tefera, H. Boukar, O. Omoigui, L.O. Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades |
| title | Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades |
| title_full | Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades |
| title_fullStr | Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades |
| title_full_unstemmed | Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades |
| title_short | Improvements in grain and fodder yield of cowpea (Vigna unguiculata) varieties developed in the Sudan savannas of Nigeria over the past four decades |
| title_sort | improvements in grain and fodder yield of cowpea vigna unguiculata varieties developed in the sudan savannas of nigeria over the past four decades |
| topic | cowpeas grain legumes leguminous crop fodder yield yield genetic |
| url | https://hdl.handle.net/10568/80471 |
| work_keys_str_mv | AT kamaraay improvementsingrainandfodderyieldofcowpeavignaunguiculatavarietiesdevelopedinthesudansavannasofnigeriaoverthepastfourdecades AT ewansihasu improvementsingrainandfodderyieldofcowpeavignaunguiculatavarietiesdevelopedinthesudansavannasofnigeriaoverthepastfourdecades AT ajeigbehakeema improvementsingrainandfodderyieldofcowpeavignaunguiculatavarietiesdevelopedinthesudansavannasofnigeriaoverthepastfourdecades AT okechukwuru improvementsingrainandfodderyieldofcowpeavignaunguiculatavarietiesdevelopedinthesudansavannasofnigeriaoverthepastfourdecades AT teferah improvementsingrainandfodderyieldofcowpeavignaunguiculatavarietiesdevelopedinthesudansavannasofnigeriaoverthepastfourdecades AT boukaro improvementsingrainandfodderyieldofcowpeavignaunguiculatavarietiesdevelopedinthesudansavannasofnigeriaoverthepastfourdecades AT omoiguilo improvementsingrainandfodderyieldofcowpeavignaunguiculatavarietiesdevelopedinthesudansavannasofnigeriaoverthepastfourdecades |