S1 family selection in early maturing maize populations in Striga infested and Striga free environments
Striga and drought are major constraints to maize (Zea mays L.) production in the savannas of west and central Africa (WCA). A study was conducted in 2005 and 2006 in Nigeria to determine the level of resistance to Striga hermonthica for two early-maturing maize populations, one white and one yellow...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2008
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/90900 |
| _version_ | 1855543215099215872 |
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| author | Badu-Apraku, Baffour Fakorede, M.A.B. Lum, A.F. |
| author_browse | Badu-Apraku, Baffour Fakorede, M.A.B. Lum, A.F. |
| author_facet | Badu-Apraku, Baffour Fakorede, M.A.B. Lum, A.F. |
| author_sort | Badu-Apraku, Baffour |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Striga and drought are major constraints to
maize (Zea mays L.) production in the savannas
of west and central Africa (WCA). A study
was conducted in 2005 and 2006 in Nigeria to
determine the level of resistance to Striga hermonthica
for two early-maturing maize populations,
one white and one yellow, and to assess
the progress made in improving each for grain
yield and level of resistance after four cycles of
S1 recurrent selection. Percentage yield gain
per cycle of the yellow population when Striga
infested was 13% with r2 = 82% and 5% with
r2 = 97% in a Striga-free environment. Corresponding
values for the white population were
15% with r2 = 40% and 1% with r2 = 9% for the
two Striga environments. For the two populations,
therefore, realized gain in grain yield was
higher under Striga-infested than Striga-free
conditions. Yield gains in the advanced cycles
of selection were accompanied by increased
number of ears per plant in both populations.
Striga damage at 10 wk after planting (WAP) and
Striga emergence at 8 WAP decreased by about
5 and 4% cycle–1, respectively in the yellow population.
For the white population, Striga damage
decreased also by about 5 and 4% per cycle–1 at
8 and 10 WAP, respectively, while Striga emergence
decreased by about 5% cycle–1 at 8 WAP.
In conclusion, S1 recurrent selection was effective
in improving grain yield and Striga resistance
in the two early maize populations. |
| format | Journal Article |
| id | CGSpace90900 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace909002024-05-15T05:12:21Z S1 family selection in early maturing maize populations in Striga infested and Striga free environments Badu-Apraku, Baffour Fakorede, M.A.B. Lum, A.F. striga hermonthica fertilizers drought tolerance striga yield striga infestation Striga and drought are major constraints to maize (Zea mays L.) production in the savannas of west and central Africa (WCA). A study was conducted in 2005 and 2006 in Nigeria to determine the level of resistance to Striga hermonthica for two early-maturing maize populations, one white and one yellow, and to assess the progress made in improving each for grain yield and level of resistance after four cycles of S1 recurrent selection. Percentage yield gain per cycle of the yellow population when Striga infested was 13% with r2 = 82% and 5% with r2 = 97% in a Striga-free environment. Corresponding values for the white population were 15% with r2 = 40% and 1% with r2 = 9% for the two Striga environments. For the two populations, therefore, realized gain in grain yield was higher under Striga-infested than Striga-free conditions. Yield gains in the advanced cycles of selection were accompanied by increased number of ears per plant in both populations. Striga damage at 10 wk after planting (WAP) and Striga emergence at 8 WAP decreased by about 5 and 4% cycle–1, respectively in the yellow population. For the white population, Striga damage decreased also by about 5 and 4% per cycle–1 at 8 and 10 WAP, respectively, while Striga emergence decreased by about 5% cycle–1 at 8 WAP. In conclusion, S1 recurrent selection was effective in improving grain yield and Striga resistance in the two early maize populations. 2008-09 2018-02-06T12:15:18Z 2018-02-06T12:15:18Z Journal Article https://hdl.handle.net/10568/90900 en Limited Access Wiley Badu-Apraku, B., Fakorede, M.A.B. & Lum, A.F. (2008). S1 Family Selection in Early-Maturing Maize Populations in-Infested and-Free Environments. Crop Science, 48(5), 1984-1994. |
| spellingShingle | striga hermonthica fertilizers drought tolerance striga yield striga infestation Badu-Apraku, Baffour Fakorede, M.A.B. Lum, A.F. S1 family selection in early maturing maize populations in Striga infested and Striga free environments |
| title | S1 family selection in early maturing maize populations in Striga infested and Striga free environments |
| title_full | S1 family selection in early maturing maize populations in Striga infested and Striga free environments |
| title_fullStr | S1 family selection in early maturing maize populations in Striga infested and Striga free environments |
| title_full_unstemmed | S1 family selection in early maturing maize populations in Striga infested and Striga free environments |
| title_short | S1 family selection in early maturing maize populations in Striga infested and Striga free environments |
| title_sort | s1 family selection in early maturing maize populations in striga infested and striga free environments |
| topic | striga hermonthica fertilizers drought tolerance striga yield striga infestation |
| url | https://hdl.handle.net/10568/90900 |
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