Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments

Abstract Availability of multiple-stress tolerant maize is critical for improvement in maize production in West and Central Africa (WCA). A study was carried out to (i) assess a set of inbred lines for combining ability under stressed and optimal conditions, (ii) determine the performance of the tes...

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Autores principales:	Benjamin Annor, Baffour Badu-Apraku, Daniel Nyadanu, Richard Akromah, Morakinyo A. B. Fakorede
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ce2227d6e70e4159a6bc78fb18b69e42
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spelling	oai:doaj.org-article:ce2227d6e70e4159a6bc78fb18b69e422021-12-02T15:07:55ZTestcross performance and combining ability of early maturing maize inbreds under multiple-stress environments10.1038/s41598-019-50345-32045-2322https://doaj.org/article/ce2227d6e70e4159a6bc78fb18b69e422019-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-50345-3https://doaj.org/toc/2045-2322Abstract Availability of multiple-stress tolerant maize is critical for improvement in maize production in West and Central Africa (WCA). A study was carried out to (i) assess a set of inbred lines for combining ability under stressed and optimal conditions, (ii) determine the performance of the testcrosses under different conditions, and (iii) identify outstanding hybrids across the conditions. Two hundred and five testcrosses were planted with five hybrid checks under Striga-infested, low soil nitrogen, drought and optimal conditions between 2015 and 2016 in Nigeria. The grain yield inheritance under optimal condition was largely regulated by additive gene effect whereas non-additive gene effects largely regulated grain yield under the three stresses. Four of the inbreds had significant positive general combining ability effects each under low N and drought, and three under Striga infestation for grain yield. The inbreds could be vital sources of beneficial alleles for development and improvement of tropical yellow maize hybrids and populations. Hybrids TZEI 443 x ENT 13 and TZEI 462 x TZEI 10 were high yielding and stable; they out-performed the three early maturing released hybrids in WCA. The new hybrids should be extensively assessed and released in the sub-region to improve food security.Benjamin AnnorBaffour Badu-AprakuDaniel NyadanuRichard AkromahMorakinyo A. B. FakoredeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-11 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Benjamin Annor Baffour Badu-Apraku Daniel Nyadanu Richard Akromah Morakinyo A. B. Fakorede Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments
description	Abstract Availability of multiple-stress tolerant maize is critical for improvement in maize production in West and Central Africa (WCA). A study was carried out to (i) assess a set of inbred lines for combining ability under stressed and optimal conditions, (ii) determine the performance of the testcrosses under different conditions, and (iii) identify outstanding hybrids across the conditions. Two hundred and five testcrosses were planted with five hybrid checks under Striga-infested, low soil nitrogen, drought and optimal conditions between 2015 and 2016 in Nigeria. The grain yield inheritance under optimal condition was largely regulated by additive gene effect whereas non-additive gene effects largely regulated grain yield under the three stresses. Four of the inbreds had significant positive general combining ability effects each under low N and drought, and three under Striga infestation for grain yield. The inbreds could be vital sources of beneficial alleles for development and improvement of tropical yellow maize hybrids and populations. Hybrids TZEI 443 x ENT 13 and TZEI 462 x TZEI 10 were high yielding and stable; they out-performed the three early maturing released hybrids in WCA. The new hybrids should be extensively assessed and released in the sub-region to improve food security.
format	article
author	Benjamin Annor Baffour Badu-Apraku Daniel Nyadanu Richard Akromah Morakinyo A. B. Fakorede
author_facet	Benjamin Annor Baffour Badu-Apraku Daniel Nyadanu Richard Akromah Morakinyo A. B. Fakorede
author_sort	Benjamin Annor
title	Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments
title_short	Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments
title_full	Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments
title_fullStr	Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments
title_full_unstemmed	Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments
title_sort	testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/ce2227d6e70e4159a6bc78fb18b69e42
work_keys_str_mv	AT benjaminannor testcrossperformanceandcombiningabilityofearlymaturingmaizeinbredsundermultiplestressenvironments AT baffourbaduapraku testcrossperformanceandcombiningabilityofearlymaturingmaizeinbredsundermultiplestressenvironments AT danielnyadanu testcrossperformanceandcombiningabilityofearlymaturingmaizeinbredsundermultiplestressenvironments AT richardakromah testcrossperformanceandcombiningabilityofearlymaturingmaizeinbredsundermultiplestressenvironments AT morakinyoabfakorede testcrossperformanceandcombiningabilityofearlymaturingmaizeinbredsundermultiplestressenvironments
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Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments

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