Response to selection for grain yield and correlated response for grain size and earliness in cowpea based on early generation testing
Large grain size and earliness to flowering are traits critical to cowpea adoption in the West African savannahs. This study reports on the correlated response to selection in these two traits in the two populations in which selections were made primarily for grain yield potential. Further, the pres...
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| Format: | Journal Article |
| Language: | Inglés |
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Wiley
2008
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| Online Access: | https://hdl.handle.net/10568/17030 |
| _version_ | 1855532343011311616 |
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| author | Padi, Francis K |
| author_browse | Padi, Francis K |
| author_facet | Padi, Francis K |
| author_sort | Padi, Francis K |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Large grain size and earliness to flowering are traits critical to cowpea adoption in the West African savannahs. This study reports on the correlated response to selection in these two traits in the two populations in which selections were made primarily for grain yield potential. Further, the present study reports on the effectiveness of early generation selection for grain yield. Each of the two populations, SARC 2 and SARC 3, was derived from a cross between an adapted parent Marfo‐Tuya and an exotic breeding line that has large grain size and early flowering. Replicated yield evaluation of F5 families showed that grain yield of Marfo‐Tuya was not different from those of the highest yielding families in each population. Increases in grain size of individual families over Marfo‐Tuya were large and, the response to selection averaged 5.3 and 3.9 g/100 seeds in the SARC 2 and SARC 3 populations, respectively. Response to selection in days to flowering averaged 3 days in SARC 3, whereas response to selection was not observed in SARC 2. Retrospective selection in the F3 at 40% intensity was efficient in identifying a high proportion of elite families in each population. |
| format | Journal Article |
| id | CGSpace17030 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace170302024-05-01T08:18:29Z Response to selection for grain yield and correlated response for grain size and earliness in cowpea based on early generation testing Padi, Francis K Large grain size and earliness to flowering are traits critical to cowpea adoption in the West African savannahs. This study reports on the correlated response to selection in these two traits in the two populations in which selections were made primarily for grain yield potential. Further, the present study reports on the effectiveness of early generation selection for grain yield. Each of the two populations, SARC 2 and SARC 3, was derived from a cross between an adapted parent Marfo‐Tuya and an exotic breeding line that has large grain size and early flowering. Replicated yield evaluation of F5 families showed that grain yield of Marfo‐Tuya was not different from those of the highest yielding families in each population. Increases in grain size of individual families over Marfo‐Tuya were large and, the response to selection averaged 5.3 and 3.9 g/100 seeds in the SARC 2 and SARC 3 populations, respectively. Response to selection in days to flowering averaged 3 days in SARC 3, whereas response to selection was not observed in SARC 2. Retrospective selection in the F3 at 40% intensity was efficient in identifying a high proportion of elite families in each population. 2008-06 2012-05-21T06:00:58Z 2012-05-21T06:00:58Z Journal Article https://hdl.handle.net/10568/17030 en Limited Access Wiley Padi, F.K. 2008. Response to selection for grain yield and correlated response for grain size and earliness in cowpea based on early generation testing. Ann. Appl. Biol. 152(3): 361–368. |
| spellingShingle | Padi, Francis K Response to selection for grain yield and correlated response for grain size and earliness in cowpea based on early generation testing |
| title | Response to selection for grain yield and correlated response for grain size and earliness in cowpea based on early generation testing |
| title_full | Response to selection for grain yield and correlated response for grain size and earliness in cowpea based on early generation testing |
| title_fullStr | Response to selection for grain yield and correlated response for grain size and earliness in cowpea based on early generation testing |
| title_full_unstemmed | Response to selection for grain yield and correlated response for grain size and earliness in cowpea based on early generation testing |
| title_short | Response to selection for grain yield and correlated response for grain size and earliness in cowpea based on early generation testing |
| title_sort | response to selection for grain yield and correlated response for grain size and earliness in cowpea based on early generation testing |
| url | https://hdl.handle.net/10568/17030 |
| work_keys_str_mv | AT padifrancisk responsetoselectionforgrainyieldandcorrelatedresponseforgrainsizeandearlinessincowpeabasedonearlygenerationtesting |