Yield assessment of new streak-resistant topcross maize hybrids in Benin
Maize (Zea mays L.) is the foremost cereal consumed in Benin but its production is constrained by the lack of access to high-quality seeds for intensification of the crop; hence, the continued cultivation of disease-susceptible, low-yielding, and open-pollinated varieties (OPVs). The study (i) evalu...
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| Format: | Article |
| Language: | English |
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De Gruyter
2024-12-01
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| Series: | Open Agriculture |
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| Online Access: | https://doi.org/10.1515/opag-2022-0370 |
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| author | Emeraghi Mary Iseghohi Innocent Idohou Jacob Mkpuma Kenneth C. Agbandou Pinawé C. Afouda Leonard Akponikpe Pierre I. Hotegni Nicodeme V. Fassinou Missihoun Antoine A. Oselebe Happiness Achigan-Dako Enoch G. |
| author_facet | Emeraghi Mary Iseghohi Innocent Idohou Jacob Mkpuma Kenneth C. Agbandou Pinawé C. Afouda Leonard Akponikpe Pierre I. Hotegni Nicodeme V. Fassinou Missihoun Antoine A. Oselebe Happiness Achigan-Dako Enoch G. |
| author_sort | Emeraghi Mary |
| collection | DOAJ |
| description | Maize (Zea mays L.) is the foremost cereal consumed in Benin but its production is constrained by the lack of access to high-quality seeds for intensification of the crop; hence, the continued cultivation of disease-susceptible, low-yielding, and open-pollinated varieties (OPVs). The study (i) evaluated the agronomic performance and heterosis of topcross hybrids (THs) developed from a cross between new streak-resistant inbred lines and Benin-adapted OPVs, (ii) estimated the combining ability of the parental materials for grain yield (GY), and (iii) assessed the relationship between GY and other agronomic traits. Eleven OPVs were crossed to two inbred lines in a line × tester mating design to generate 22 THs. The THs were evaluated across four environments in Benin. The environment had a significant effect on GY and agronomic traits. General and specific combining ability effects were significant for GY and other traits indicating the presence of additive and non-additive gene effects. Four THs exhibited positive mid- and better-parent heterosis for GY and DMR ESR W × TZIL07A01322, which is the highest yielding TH, at 5.1 tons per hectare, had 29.1 and 13.3% yield advantages over its mid-parent and better-parent mean yields, respectively, with the potential for commercialization by indigenous seed enterprises. GY was positively associated with 100-seed weight enabling indirect selection. Four OPVs contributed favorably to observed heterosis and could serve as potential genotypes for inbred line extraction. |
| format | Article |
| id | doaj-art-bae05250815b4d30a9fd2bfe6d14fd0d |
| institution | OA Journals |
| issn | 2391-9531 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Open Agriculture |
| spelling | doaj-art-bae05250815b4d30a9fd2bfe6d14fd0d2025-08-20T01:56:28ZengDe GruyterOpen Agriculture2391-95312024-12-01911051210.1515/opag-2022-0370Yield assessment of new streak-resistant topcross maize hybrids in BeninEmeraghi Mary0Iseghohi Innocent1Idohou Jacob2Mkpuma Kenneth C.3Agbandou Pinawé C.4Afouda Leonard5Akponikpe Pierre I.6Hotegni Nicodeme V. Fassinou7Missihoun Antoine A.8Oselebe Happiness9Achigan-Dako Enoch G.10Genetics, Biotechnology and Seed Science Unit (GBioS), Laboratory of Crop Production, Physiology and Plant Breeding (PAGEV), Department of Plant Science, Faculty of Agronomic Sciences (FSA), University of Abomey-Calavi, Abomey-Calavi, Republic of BeninDepartment of Crop Science and Horticulture, Federal University Oye-Ekiti, Ikole-Ekiti Campus, Ikole, Ekiti State, NigeriaGenetics, Biotechnology and Seed Science Unit (GBioS), Laboratory of Crop Production, Physiology and Plant Breeding (PAGEV), Department of Plant Science, Faculty of Agronomic Sciences (FSA), University of Abomey-Calavi, Abomey-Calavi, Republic of BeninGenetics, Biotechnology and Seed Science Unit (GBioS), Laboratory of Crop Production, Physiology and Plant Breeding (PAGEV), Department of Plant Science, Faculty of Agronomic Sciences (FSA), University of Abomey-Calavi, Abomey-Calavi, Republic of BeninGenetics, Biotechnology and Seed Science Unit (GBioS), Laboratory of Crop Production, Physiology and Plant Breeding (PAGEV), Department of Plant Science, Faculty of Agronomic Sciences (FSA), University of Abomey-Calavi, Abomey-Calavi, Republic of BeninLaboratoire de Phytotechnie, d Amélioration Et de Protection Des Plantes, Université de Parakou, Parakou, Republic of BeninDepartment of Natural Resources Management, Laboratory of Hydraulics and Environmental Modeling, Université de Parakou, Université, Parakou, Republic of BeninGenetics, Biotechnology and Seed Science Unit (GBioS), Laboratory of Crop Production, Physiology and Plant Breeding (PAGEV), Department of Plant Science, Faculty of Agronomic Sciences (FSA), University of Abomey-Calavi, Abomey-Calavi, Republic of BeninDepartement de Génétique et des Biotechnologies, Faculté des Sciences et Techniques, Université d’Abomey-Calavi, 01BP 526, Cotonou, BeninDepartment of crop production and landscape management, Faculty of Agriculture and Natural Resources Management, Ebonyi State University, Abakaliki, Ebonyi State, NigeriaGenetics, Biotechnology and Seed Science Unit (GBioS), Laboratory of Crop Production, Physiology and Plant Breeding (PAGEV), Department of Plant Science, Faculty of Agronomic Sciences (FSA), University of Abomey-Calavi, Abomey-Calavi, Republic of BeninMaize (Zea mays L.) is the foremost cereal consumed in Benin but its production is constrained by the lack of access to high-quality seeds for intensification of the crop; hence, the continued cultivation of disease-susceptible, low-yielding, and open-pollinated varieties (OPVs). The study (i) evaluated the agronomic performance and heterosis of topcross hybrids (THs) developed from a cross between new streak-resistant inbred lines and Benin-adapted OPVs, (ii) estimated the combining ability of the parental materials for grain yield (GY), and (iii) assessed the relationship between GY and other agronomic traits. Eleven OPVs were crossed to two inbred lines in a line × tester mating design to generate 22 THs. The THs were evaluated across four environments in Benin. The environment had a significant effect on GY and agronomic traits. General and specific combining ability effects were significant for GY and other traits indicating the presence of additive and non-additive gene effects. Four THs exhibited positive mid- and better-parent heterosis for GY and DMR ESR W × TZIL07A01322, which is the highest yielding TH, at 5.1 tons per hectare, had 29.1 and 13.3% yield advantages over its mid-parent and better-parent mean yields, respectively, with the potential for commercialization by indigenous seed enterprises. GY was positively associated with 100-seed weight enabling indirect selection. Four OPVs contributed favorably to observed heterosis and could serve as potential genotypes for inbred line extraction.https://doi.org/10.1515/opag-2022-0370combining abilitygene actionheterosisopen-pollinated varietieszea mays |
| spellingShingle | Emeraghi Mary Iseghohi Innocent Idohou Jacob Mkpuma Kenneth C. Agbandou Pinawé C. Afouda Leonard Akponikpe Pierre I. Hotegni Nicodeme V. Fassinou Missihoun Antoine A. Oselebe Happiness Achigan-Dako Enoch G. Yield assessment of new streak-resistant topcross maize hybrids in Benin Open Agriculture combining ability gene action heterosis open-pollinated varieties zea mays |
| title | Yield assessment of new streak-resistant topcross maize hybrids in Benin |
| title_full | Yield assessment of new streak-resistant topcross maize hybrids in Benin |
| title_fullStr | Yield assessment of new streak-resistant topcross maize hybrids in Benin |
| title_full_unstemmed | Yield assessment of new streak-resistant topcross maize hybrids in Benin |
| title_short | Yield assessment of new streak-resistant topcross maize hybrids in Benin |
| title_sort | yield assessment of new streak resistant topcross maize hybrids in benin |
| topic | combining ability gene action heterosis open-pollinated varieties zea mays |
| url | https://doi.org/10.1515/opag-2022-0370 |
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