Assessing inbred-hybrid relationships for developing drought tolerant provitamin A - quality protein maize hybrids
Drought tolerant early maturing maize (Zea mays L.) inbred lines with high levels of provitamin A and quality protein (PVA‐QPM) are urgently needed for development of superior hybrids to mitigate malnutrition and intensify maize production and productivity in sub‐Saharan Africa (SSA). This study was...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/109563 |
| _version_ | 1855535339964203008 |
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| author | Obeng-Bio, E. Badu-Apraku, Baffour Ifie, B.E. Danquah, A. Blay, E.T. Dadzie, M.A. |
| author_browse | Badu-Apraku, Baffour Blay, E.T. Dadzie, M.A. Danquah, A. Ifie, B.E. Obeng-Bio, E. |
| author_facet | Obeng-Bio, E. Badu-Apraku, Baffour Ifie, B.E. Danquah, A. Blay, E.T. Dadzie, M.A. |
| author_sort | Obeng-Bio, E. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Drought tolerant early maturing maize (Zea mays L.) inbred lines with high levels of provitamin A and quality protein (PVA‐QPM) are urgently needed for development of superior hybrids to mitigate malnutrition and intensify maize production and productivity in sub‐Saharan Africa (SSA). This study was designed to (1) identify early maturing inbred lines with combined tolerance to drought, elevated tryptophan and PVA contents, (2) examine inbred‐hybrid relationships for tryptophan and PVA accumulation, and (3) select hybrids with outstanding grain yield performance. A total of 64 inbred lines and six checks, plus 96 hybrids and four checks were evaluated under drought and well‐watered environments in Nigeria for two years. Eighteen parental lines and 54 derived hybrids were assayed for tryptophan and PVA contents. Ten drought tolerant inbred lines with high tryptophan and elevated PVA levels were identified in the top 10 hybrid combinations across managed drought and well‐watered conditions. Inbred‐hybrid relationship was significant for grain yield under each and across the two contrasting environments. Significant average heterosis were found for tryptophan and PVA under well‐watered conditions. This indicated that the selected inbred lines could be utilized for developing high yielding PVA‐QPM hybrids tolerant to drought stress in SSA. The 10 top‐performing PVA‐QPM hybrids identified are being extensively evaluated in multi‐locations and subsequently in on‐farm trials for commercialization throughout SSA. |
| format | Journal Article |
| id | CGSpace109563 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1095632024-05-01T08:18:56Z Assessing inbred-hybrid relationships for developing drought tolerant provitamin A - quality protein maize hybrids Obeng-Bio, E. Badu-Apraku, Baffour Ifie, B.E. Danquah, A. Blay, E.T. Dadzie, M.A. drought tolerance maize zea mays inbred lines hybrid proteins tryptophan hybrids provitamins Drought tolerant early maturing maize (Zea mays L.) inbred lines with high levels of provitamin A and quality protein (PVA‐QPM) are urgently needed for development of superior hybrids to mitigate malnutrition and intensify maize production and productivity in sub‐Saharan Africa (SSA). This study was designed to (1) identify early maturing inbred lines with combined tolerance to drought, elevated tryptophan and PVA contents, (2) examine inbred‐hybrid relationships for tryptophan and PVA accumulation, and (3) select hybrids with outstanding grain yield performance. A total of 64 inbred lines and six checks, plus 96 hybrids and four checks were evaluated under drought and well‐watered environments in Nigeria for two years. Eighteen parental lines and 54 derived hybrids were assayed for tryptophan and PVA contents. Ten drought tolerant inbred lines with high tryptophan and elevated PVA levels were identified in the top 10 hybrid combinations across managed drought and well‐watered conditions. Inbred‐hybrid relationship was significant for grain yield under each and across the two contrasting environments. Significant average heterosis were found for tryptophan and PVA under well‐watered conditions. This indicated that the selected inbred lines could be utilized for developing high yielding PVA‐QPM hybrids tolerant to drought stress in SSA. The 10 top‐performing PVA‐QPM hybrids identified are being extensively evaluated in multi‐locations and subsequently in on‐farm trials for commercialization throughout SSA. 2020-09 2020-09-21T15:39:00Z 2020-09-21T15:39:00Z Journal Article https://hdl.handle.net/10568/109563 en Open Access Wiley Obeng‐Bio, E., Badu‐Apraku, B., Ifie, B.E., Danquah, A., Blay, E.T., & Dadzie, M.A. (2020). Assessing inbred‐hybrid relationships for developing drought tolerant provitamin A‐quality protein maize hybrids. Agronomy Journal, 1-40. |
| spellingShingle | drought tolerance maize zea mays inbred lines hybrid proteins tryptophan hybrids provitamins Obeng-Bio, E. Badu-Apraku, Baffour Ifie, B.E. Danquah, A. Blay, E.T. Dadzie, M.A. Assessing inbred-hybrid relationships for developing drought tolerant provitamin A - quality protein maize hybrids |
| title | Assessing inbred-hybrid relationships for developing drought tolerant provitamin A - quality protein maize hybrids |
| title_full | Assessing inbred-hybrid relationships for developing drought tolerant provitamin A - quality protein maize hybrids |
| title_fullStr | Assessing inbred-hybrid relationships for developing drought tolerant provitamin A - quality protein maize hybrids |
| title_full_unstemmed | Assessing inbred-hybrid relationships for developing drought tolerant provitamin A - quality protein maize hybrids |
| title_short | Assessing inbred-hybrid relationships for developing drought tolerant provitamin A - quality protein maize hybrids |
| title_sort | assessing inbred hybrid relationships for developing drought tolerant provitamin a quality protein maize hybrids |
| topic | drought tolerance maize zea mays inbred lines hybrid proteins tryptophan hybrids provitamins |
| url | https://hdl.handle.net/10568/109563 |
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