| dc.contributor.author | Amegbor, I.K. |
| dc.contributor.author | Badu-Apraku, B. |
| dc.contributor.author | Adu, G.B. |
| dc.contributor.author | Adjebeng-Danquah, J. |
| dc.contributor.author | Toyinbo, J.O. |
| dc.date.accessioned | 2022-08-09T08:51:46Z |
| dc.date.available | 2022-08-09T08:51:46Z |
| dc.date.issued | 2020-07-24 |
| dc.identifier.citation | Amegbor, I.K., Badu-Apraku, B., Adu, G.B., Adjebeng-Danquah, J. & Toyinbo, J.O. (2020). Combining ability of extra-early maize inbreds derived from a cross between maize and Zea diploperennis and hybrid performance under contrasting environments. Agronomy, 10(8): 1069, 1-18. |
| dc.identifier.issn | 2073-4395 |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/7614 |
| dc.description.abstract | Knowledge of the genetic mechanisms conditioning drought tolerance in maize is crucial to the success of hybrid breeding programs aimed at developing high-yielding cultivars under drought. The objectives of this study were to determine the combining ability of extra-early inbreds, compute the heritability of measured traits, assess the performance of inbreds in hybrid combinations and investigate the associations among traits under drought and optimal conditions. A total of 252 hybrids generated by crossing 63 inbreds to four testers, along with four commercial hybrid checks, were evaluated for 2 years under drought and rainfed conditions. General combining ability (GCA) and specific combining ability (SCA) for the traits were significant. A total of 57.1% and 53.4% of the genotypic sum of squares were attributable to GCA effects for grain yield under managed drought and rainfed conditions, respectively. Hybrids TZdEEI 91 × TZEEI 21 and TZdEEI 55 × TZEEI 13 out-yielded the best checks under drought and optimal conditions by 49.13% and 39.05%, respectively. The most promising hybrids with consistently high grain yield under drought and rainfed conditions, were TZdEEI 54 × TZEEI 13, TZdEEI 91 × TZEEI 21 and TZdEEI 55 × TZEEI 21 and should be further evaluated for possible commercial production in sub-Saharan Africa. |
| dc.description.sponsorship | Bill & Melinda Gates Foundation |
| dc.description.sponsorship | Pan African University, Ibadan |
| dc.format.extent | 1-18 |
| dc.language.iso | en |
| dc.subject | Drought |
| dc.subject | Combining Ability |
| dc.subject | Heritability |
| dc.subject | Zea Diploperennis |
| dc.subject | Zea Mays |
| dc.title | Combining ability of extra-early maize inbreds derived from a cross between maize and Zea diploperennis and hybrid performance under contrasting environments |
| dc.type | Journal Article |
| cg.contributor.crp | Maize |
| cg.contributor.affiliation | Pan African University, Ibadan |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.contributor.affiliation | Council for Scientific and Industrial Research, Ghana |
| cg.coverage.region | Africa |
| cg.coverage.region | West Africa |
| cg.coverage.country | Nigeria |
| cg.coverage.hub | Headquarters and Western Africa Hub |
| cg.researchtheme | Biotech and Plant Breeding |
| cg.identifier.bibtexciteid | AMEGBOR:2020 |
| cg.isijournal | ISI Journal |
| cg.authorship.types | CGIAR and developing country institute |
| cg.iitasubject | Agronomy |
| cg.iitasubject | Maize |
| cg.iitasubject | Plant Breeding |
| cg.journal | Agronomy |
| cg.accessibilitystatus | Open Access |
| cg.reviewstatus | Peer Review |
| cg.usagerightslicense | Creative Commons Attribution 4.0 (CC BY 0.0) |
| cg.targetaudience | Scientists |
| cg.identifier.doi | https://dx.doi.org/10.3390/agronomy10081069 |
| cg.iitaauthor.identifier | BAFFOUR BADU-APRAKU: 0000-0003-0113-5487 |
| cg.futureupdate.required | No |
| cg.identifier.issue | 8 |
| cg.identifier.volume | 10 |
