Early testing on S1 lines of black corn (Zea mays L.) from the Ecuadorian highlands
Maize (Zea maysL.) germplasm from the Ecuadorian Higlands has low tolerance to inbreeding especially in starchy cultivars. To create competitive varieties at the commercial level it is necessary to identify outstanding progenitor lines by early testing. The purpose of this research was...
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Universidad Nacional de Tumbes
2022-03-01
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| Series: | Manglar |
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| Online Access: | https://revistas.untumbes.edu.pe/index.php/manglar/article/view/295 |
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| author | Jorge Merino William Viera Javier Garófalo Paúl Mejía Víctor Sánchez |
| author_facet | Jorge Merino William Viera Javier Garófalo Paúl Mejía Víctor Sánchez |
| author_sort | Jorge Merino |
| collection | DOAJ |
| description | Maize (Zea maysL.) germplasm from the Ecuadorian Higlands has low tolerance to inbreeding especially in starchy cultivars. To create competitive varieties at the commercial level it is necessary to identify outstanding progenitor lines by early testing. The purpose of this research was to evaluate the yield potential of S1linesof black corn by early testing. The experiment was conducted at the “Tunshi” Experiment Station, Licto parish, Chimborazo province, Ecuador using a complete random block design with four replications. Twenty-four treatments were evaluated, each consisting of an S1line of black corn. Agronomic traits were registered and the percentage of inbreeding depression was calculated. The lines presented statistical differences (P ≤ 0.05) in the variables days to male and female flowering, plant height, ear height, leaf disease, ear length, weight of 100 kernels and grain yield. All the variables showed inbreeding depression, except days to male flowering, which presented a low increase. Lines 16, 15 and 22 were the most productive with yields of 2.00; 2.08 and 1.95 t ha-1respectively. These resultsallow to select lines with less depressive effects on yield produced by inbreeding, and to continue with the improvement processes of black maize. |
| format | Article |
| id | doaj-art-2181a70d14594c17ad550e956bcdbf3d |
| institution | Kabale University |
| issn | 1816-7667 2414-1046 |
| language | English |
| publishDate | 2022-03-01 |
| publisher | Universidad Nacional de Tumbes |
| record_format | Article |
| series | Manglar |
| spelling | doaj-art-2181a70d14594c17ad550e956bcdbf3d2025-02-03T10:45:09ZengUniversidad Nacional de TumbesManglar1816-76672414-10462022-03-01191713https://doi.org/10.17268/manglar.2022.001Early testing on S1 lines of black corn (Zea mays L.) from the Ecuadorian highlandsJorge Merino0https://orcid.org/0000-0002-5632-2194William Viera1https://orcid.org/0000-0003-4472-4126Javier Garófalo2https://orcid.org/0000-0003-2037-5187Paúl Mejía3https://orcid.org/0000-0002-6772-8608Víctor Sánchez4https://orcid.org/0000-0001-6904-1183Instituto Nacional de Investigaciones Agropecuarias (INIAP), Estación Experimental Santa Catalina, Panamericana Sur Km 1, Pichincha, Mejía, EcuadorInstituto Nacional de Investigaciones Agropecuarias (INIAP), Dirección de Investigaciones, Av. Eloy Alfaro N30-350 y Av. Amazonas, Pichincha, Quito, EcuadorInstituto Nacional de Investigaciones Agropecuarias (INIAP), Estación Experimental Santa Catalina, Panamericana Sur Km 1, Pichincha, Mejía, EcuadorInstituto Nacional de Investigaciones Agropecuarias (INIAP), Estación Experimental Santa Catalina, Panamericana Sur Km 1, Pichincha, Mejía, EcuadorInstituto Nacional de Investigaciones Agropecuarias (INIAP), Dirección de Investigaciones, Av. Eloy Alfaro N30-350 y Av. Amazonas, Pichincha, Quito, EcuadorMaize (Zea maysL.) germplasm from the Ecuadorian Higlands has low tolerance to inbreeding especially in starchy cultivars. To create competitive varieties at the commercial level it is necessary to identify outstanding progenitor lines by early testing. The purpose of this research was to evaluate the yield potential of S1linesof black corn by early testing. The experiment was conducted at the “Tunshi” Experiment Station, Licto parish, Chimborazo province, Ecuador using a complete random block design with four replications. Twenty-four treatments were evaluated, each consisting of an S1line of black corn. Agronomic traits were registered and the percentage of inbreeding depression was calculated. The lines presented statistical differences (P ≤ 0.05) in the variables days to male and female flowering, plant height, ear height, leaf disease, ear length, weight of 100 kernels and grain yield. All the variables showed inbreeding depression, except days to male flowering, which presented a low increase. Lines 16, 15 and 22 were the most productive with yields of 2.00; 2.08 and 1.95 t ha-1respectively. These resultsallow to select lines with less depressive effects on yield produced by inbreeding, and to continue with the improvement processes of black maize.https://revistas.untumbes.edu.pe/index.php/manglar/article/view/295zea maysl.;depresión endogámica;autofecundación;líneas promisorias;prueba temprana |
| spellingShingle | Jorge Merino William Viera Javier Garófalo Paúl Mejía Víctor Sánchez Early testing on S1 lines of black corn (Zea mays L.) from the Ecuadorian highlands Manglar zea maysl.;depresión endogámica;autofecundación;líneas promisorias;prueba temprana |
| title | Early testing on S1 lines of black corn (Zea mays L.) from the Ecuadorian highlands |
| title_full | Early testing on S1 lines of black corn (Zea mays L.) from the Ecuadorian highlands |
| title_fullStr | Early testing on S1 lines of black corn (Zea mays L.) from the Ecuadorian highlands |
| title_full_unstemmed | Early testing on S1 lines of black corn (Zea mays L.) from the Ecuadorian highlands |
| title_short | Early testing on S1 lines of black corn (Zea mays L.) from the Ecuadorian highlands |
| title_sort | early testing on s1 lines of black corn zea mays l from the ecuadorian highlands |
| topic | zea maysl.;depresión endogámica;autofecundación;líneas promisorias;prueba temprana |
| url | https://revistas.untumbes.edu.pe/index.php/manglar/article/view/295 |
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