Evaluation of cowpea (Vigna unguiculata (L.) Walp.) germplasm lines for tolerance to drought
Cowpea is an important grain legume crop in sub-Saharan Africa (SSA) where, on a worldwide basis, the bulk is produced and consumed. The dry savanna area of SSA is where cowpea is mostly grown under rain-fed conditions. The crop is therefore prone to drought which may occur early, mid and/or late in...
| Main Authors: | , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Cambridge University Press
2012
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/34966 |
| _version_ | 1855542505587605504 |
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| author | Fatokun, C.A. Boukar, O. Muranaka S |
| author_browse | Boukar, O. Fatokun, C.A. Muranaka S |
| author_facet | Fatokun, C.A. Boukar, O. Muranaka S |
| author_sort | Fatokun, C.A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cowpea is an important grain legume crop in sub-Saharan Africa (SSA) where, on a worldwide basis, the bulk is produced and consumed. The dry savanna area of SSA is where cowpea is mostly grown under rain-fed conditions. The crop is therefore prone to drought which may occur early, mid and/or late in the cropping season. Compared with many other crops, cowpea is drought tolerant, even though drought is still a major constraint limiting its productivity in SSA. Increasing the level of drought tolerance in existing cowpea varieties grown by farmers would enable them to obtain more and stable yield from their cowpea fields. As a first step towards enhancing drought tolerance in existing cowpea varieties, 1288 lines were selected randomly from cowpea germplasm collections maintained at the International Institute of Tropical Agriculture, and evaluated for their drought tolerance at Ibadan. Drought was imposed by withdrawal of irrigation from 5 weeks after sowing. On average, drought reduced the number of days to flower by 12 d, and the mean grain yield per plant was also reduced by 67.28%. A few of the cowpea lines stayed green for up to 6 weeks after irrigation was stopped, even though some of these produced no pods when the study was terminated. Further evaluation in the screenhouse of 142 selected drought-tolerant lines helped to identify six lines that could be potential parents for developing breeding lines with enhanced drought tolerance. |
| format | Journal Article |
| id | CGSpace34966 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace349662024-11-15T08:53:11Z Evaluation of cowpea (Vigna unguiculata (L.) Walp.) germplasm lines for tolerance to drought Fatokun, C.A. Boukar, O. Muranaka S agriculture climate cowpeas Cowpea is an important grain legume crop in sub-Saharan Africa (SSA) where, on a worldwide basis, the bulk is produced and consumed. The dry savanna area of SSA is where cowpea is mostly grown under rain-fed conditions. The crop is therefore prone to drought which may occur early, mid and/or late in the cropping season. Compared with many other crops, cowpea is drought tolerant, even though drought is still a major constraint limiting its productivity in SSA. Increasing the level of drought tolerance in existing cowpea varieties grown by farmers would enable them to obtain more and stable yield from their cowpea fields. As a first step towards enhancing drought tolerance in existing cowpea varieties, 1288 lines were selected randomly from cowpea germplasm collections maintained at the International Institute of Tropical Agriculture, and evaluated for their drought tolerance at Ibadan. Drought was imposed by withdrawal of irrigation from 5 weeks after sowing. On average, drought reduced the number of days to flower by 12 d, and the mean grain yield per plant was also reduced by 67.28%. A few of the cowpea lines stayed green for up to 6 weeks after irrigation was stopped, even though some of these produced no pods when the study was terminated. Further evaluation in the screenhouse of 142 selected drought-tolerant lines helped to identify six lines that could be potential parents for developing breeding lines with enhanced drought tolerance. 2012-12 2014-02-19T07:59:26Z 2014-02-19T07:59:26Z Journal Article https://hdl.handle.net/10568/34966 en Limited Access Cambridge University Press Fatokun CA, Boukar O, Muranaka S. 2012. Evaluation of cowpea (Vigna unguiculata (L.) Walp.) germplasm lines for tolerance to drought. Plant Genetic Resources 10: 171-176. |
| spellingShingle | agriculture climate cowpeas Fatokun, C.A. Boukar, O. Muranaka S Evaluation of cowpea (Vigna unguiculata (L.) Walp.) germplasm lines for tolerance to drought |
| title | Evaluation of cowpea (Vigna unguiculata (L.) Walp.) germplasm lines for tolerance to drought |
| title_full | Evaluation of cowpea (Vigna unguiculata (L.) Walp.) germplasm lines for tolerance to drought |
| title_fullStr | Evaluation of cowpea (Vigna unguiculata (L.) Walp.) germplasm lines for tolerance to drought |
| title_full_unstemmed | Evaluation of cowpea (Vigna unguiculata (L.) Walp.) germplasm lines for tolerance to drought |
| title_short | Evaluation of cowpea (Vigna unguiculata (L.) Walp.) germplasm lines for tolerance to drought |
| title_sort | evaluation of cowpea vigna unguiculata l walp germplasm lines for tolerance to drought |
| topic | agriculture climate cowpeas |
| url | https://hdl.handle.net/10568/34966 |
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