Biplot analysis of diallel crosses of early maturing tropical yellow maize inbreds in stress and nonstress environments
Appropriate testers are needed as well as information on heterotic patterns of tropical lowland early-maturing germplasm. Diallel crosses involving nine tropical early maturing maize (Zea mays L.) inbreds were evaluated at five locations in Nigeria from 2007 to 2009 under drought stress, when Striga...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2011
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/81280 |
| _version_ | 1855538826332602368 |
|---|---|
| author | Badu-Apraku, Baffour Fontem, Lum. A. Akinwale, R. Oyekunle, M. |
| author_browse | Akinwale, R. Badu-Apraku, Baffour Fontem, Lum. A. Oyekunle, M. |
| author_facet | Badu-Apraku, Baffour Fontem, Lum. A. Akinwale, R. Oyekunle, M. |
| author_sort | Badu-Apraku, Baffour |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Appropriate testers are needed as well as information on heterotic patterns of tropical lowland early-maturing germplasm. Diallel crosses involving nine tropical early maturing maize (Zea mays L.) inbreds were evaluated at five locations in Nigeria from 2007 to 2009 under drought stress, when Striga infested, and in optimal growing conditions to examine the combining abilities and heterotic patterns and identify appropriate testers. Results revealed that TZEI 17 was the closest to the ideal tester and may be considered as the best under drought stress, TZEI 23 and TZEI 9 under artificial Striga infestation, and TZEI 13 across growing conditions. No appropriate tester was identified for the optimal growing conditions. Inbreds were placed in three contrasting tester groups under drought stress, and four groups each were placed under Striga infestation and optimal growing conditions and across research environments. Hybrids between inbreds in contrasting tester groups of each research environment are expected to show heterosis. TZEI 23 × TZEI 13 had a superior performance under all research conditions, suggesting that it has a broad adaptation. Classification of inbreds into distinct tester groups was not possible for 33% of the inbreds under drought stress and for 22% when Striga infested, under optimal growing conditions, and across the test environments. |
| format | Journal Article |
| id | CGSpace81280 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2011 |
| publishDateRange | 2011 |
| publishDateSort | 2011 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace812802025-01-27T15:00:52Z Biplot analysis of diallel crosses of early maturing tropical yellow maize inbreds in stress and nonstress environments Badu-Apraku, Baffour Fontem, Lum. A. Akinwale, R. Oyekunle, M. maize food crops drought stress hybrids drought tolerant striga infestation Appropriate testers are needed as well as information on heterotic patterns of tropical lowland early-maturing germplasm. Diallel crosses involving nine tropical early maturing maize (Zea mays L.) inbreds were evaluated at five locations in Nigeria from 2007 to 2009 under drought stress, when Striga infested, and in optimal growing conditions to examine the combining abilities and heterotic patterns and identify appropriate testers. Results revealed that TZEI 17 was the closest to the ideal tester and may be considered as the best under drought stress, TZEI 23 and TZEI 9 under artificial Striga infestation, and TZEI 13 across growing conditions. No appropriate tester was identified for the optimal growing conditions. Inbreds were placed in three contrasting tester groups under drought stress, and four groups each were placed under Striga infestation and optimal growing conditions and across research environments. Hybrids between inbreds in contrasting tester groups of each research environment are expected to show heterosis. TZEI 23 × TZEI 13 had a superior performance under all research conditions, suggesting that it has a broad adaptation. Classification of inbreds into distinct tester groups was not possible for 33% of the inbreds under drought stress and for 22% when Striga infested, under optimal growing conditions, and across the test environments. 2011-01 2017-06-01T10:08:26Z 2017-06-01T10:08:26Z Journal Article https://hdl.handle.net/10568/81280 en Limited Access Wiley Badu-Apraku, B., Fontem, Lum. A., Akinwale, R. & Oyekunle, M. (2011). Biplot analysis of diallel crosses of early maturing tropical yellow maize inbreds in stress and nonstress environments. Crop science, 51(1), 173-188. |
| spellingShingle | maize food crops drought stress hybrids drought tolerant striga infestation Badu-Apraku, Baffour Fontem, Lum. A. Akinwale, R. Oyekunle, M. Biplot analysis of diallel crosses of early maturing tropical yellow maize inbreds in stress and nonstress environments |
| title | Biplot analysis of diallel crosses of early maturing tropical yellow maize inbreds in stress and nonstress environments |
| title_full | Biplot analysis of diallel crosses of early maturing tropical yellow maize inbreds in stress and nonstress environments |
| title_fullStr | Biplot analysis of diallel crosses of early maturing tropical yellow maize inbreds in stress and nonstress environments |
| title_full_unstemmed | Biplot analysis of diallel crosses of early maturing tropical yellow maize inbreds in stress and nonstress environments |
| title_short | Biplot analysis of diallel crosses of early maturing tropical yellow maize inbreds in stress and nonstress environments |
| title_sort | biplot analysis of diallel crosses of early maturing tropical yellow maize inbreds in stress and nonstress environments |
| topic | maize food crops drought stress hybrids drought tolerant striga infestation |
| url | https://hdl.handle.net/10568/81280 |
| work_keys_str_mv | AT baduaprakubaffour biplotanalysisofdiallelcrossesofearlymaturingtropicalyellowmaizeinbredsinstressandnonstressenvironments AT fontemluma biplotanalysisofdiallelcrossesofearlymaturingtropicalyellowmaizeinbredsinstressandnonstressenvironments AT akinwaler biplotanalysisofdiallelcrossesofearlymaturingtropicalyellowmaizeinbredsinstressandnonstressenvironments AT oyekunlem biplotanalysisofdiallelcrossesofearlymaturingtropicalyellowmaizeinbredsinstressandnonstressenvironments |