Kernel weight in maize: genetic control of its physiological and compositional determinants in a dent × flint-caribbean RIL population
The genetic control of maize kernel weight (KW) determination could be studied through its physiological and/ or compositional determinants. Our objective was to dissect the genetic control of maize KW by analyzing its physiological (KGR: kernel growth rate; KFD: kernel filling duration) and composi...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Maydica-ist Sper Cerealicoltur
2023
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/16062 https://journals-crea.4science.it/index.php/maydica/article/view/1557 |
| _version_ | 1855037402356121600 |
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| author | Mandolino, Cecilia Ines D´Andrea, Karina Elizabeth Piedra, Carlina V. Alvarez Prado, Santiago Olmos, Sofía Eugenia Cirilo, Alfredo Gabriel Otegui, María Elena |
| author_browse | Alvarez Prado, Santiago Cirilo, Alfredo Gabriel D´Andrea, Karina Elizabeth Mandolino, Cecilia Ines Olmos, Sofía Eugenia Otegui, María Elena Piedra, Carlina V. |
| author_facet | Mandolino, Cecilia Ines D´Andrea, Karina Elizabeth Piedra, Carlina V. Alvarez Prado, Santiago Olmos, Sofía Eugenia Cirilo, Alfredo Gabriel Otegui, María Elena |
| author_sort | Mandolino, Cecilia Ines |
| collection | INTA Digital |
| description | The genetic control of maize kernel weight (KW) determination could be studied through its physiological and/ or compositional determinants. Our objective was to dissect the genetic control of maize KW by analyzing its physiological (KGR: kernel growth rate; KFD: kernel filling duration) and compositional (protein, oil, starch) determinants in a dent×flint Caribbean RIL population, which combines a broad genetic background with grains of high added value for industry. An additional objective was to determine the stability of the genetic control under contrasting growing conditions, for which soil nitrogen offer was modified across experiments. Heritability (H2) values were high for KW (H2 = 0.74) and intermediate for the other traits (from 0.62 to 0.42). Kernel weight had a strong correlation with KFD (r = 0.69), KGR (r = 0.60) and protein concentration (r = 0.56). Ten joint QTL with inconsistent effects across years and seven epistatic interactions were detected. Despite changes in effect size, most QTL were significant under both environments. Nine QTL were associated with variations in potential KW (KWP), mean KW, KGR and oil concentration, eight with variations in protein and starch concentration and seven with KFD. Epistatic interactions were related to regions with significant main effects. The most important finding was the existence of a common QTL for KWP, KGR and KFD on chromosome 5, for which there was no previous report. Results increased our knowledge on the genetic control of KW through its phenotypic and genetic correlation with KFD, confirming the need to explore different physiological strategies in different genetic backgrounds. |
| format | info:ar-repo/semantics/artículo |
| id | INTA16062 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Maydica-ist Sper Cerealicoltur |
| publisherStr | Maydica-ist Sper Cerealicoltur |
| record_format | dspace |
| spelling | INTA160622023-11-29T14:22:22Z Kernel weight in maize: genetic control of its physiological and compositional determinants in a dent × flint-caribbean RIL population Mandolino, Cecilia Ines D´Andrea, Karina Elizabeth Piedra, Carlina V. Alvarez Prado, Santiago Olmos, Sofía Eugenia Cirilo, Alfredo Gabriel Otegui, María Elena Maíz Granos Tasa de Crecimiento Loci de Rasgos Cuantitativos Maize Grain Growth Rate Quantitative Trait Loci Kernel Filling Duration Protein Concentration The genetic control of maize kernel weight (KW) determination could be studied through its physiological and/ or compositional determinants. Our objective was to dissect the genetic control of maize KW by analyzing its physiological (KGR: kernel growth rate; KFD: kernel filling duration) and compositional (protein, oil, starch) determinants in a dent×flint Caribbean RIL population, which combines a broad genetic background with grains of high added value for industry. An additional objective was to determine the stability of the genetic control under contrasting growing conditions, for which soil nitrogen offer was modified across experiments. Heritability (H2) values were high for KW (H2 = 0.74) and intermediate for the other traits (from 0.62 to 0.42). Kernel weight had a strong correlation with KFD (r = 0.69), KGR (r = 0.60) and protein concentration (r = 0.56). Ten joint QTL with inconsistent effects across years and seven epistatic interactions were detected. Despite changes in effect size, most QTL were significant under both environments. Nine QTL were associated with variations in potential KW (KWP), mean KW, KGR and oil concentration, eight with variations in protein and starch concentration and seven with KFD. Epistatic interactions were related to regions with significant main effects. The most important finding was the existence of a common QTL for KWP, KGR and KFD on chromosome 5, for which there was no previous report. Results increased our knowledge on the genetic control of KW through its phenotypic and genetic correlation with KFD, confirming the need to explore different physiological strategies in different genetic backgrounds. EEA Pergamino Fil: Mandolino, Cecilia Ines. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Laboratorio de Biotecnología; Argentina Fil: Mandolino, Cecilia Ines. Consejo Nacional de Investigaciones, Científicas y Técnicas; Argentina Fil: D'Andrea, Karina Elizabeth. Consejo Nacional de Investigaciones, Científicas y Técnicas; Argentina Fil: D´Andrea, Karina Elizabeth. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina Fil: Piedra, Carlina V. Consejo Nacional de Investigaciones, Científicas y Técnicas; Argentina Fil: Piedra, Carlina V. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina Fil: Alvarez Prado, Santiago. Institut National de la Recherche Agronomique (INRA), Unité Mixte de Recherche 759 Laboratoire d’Ecophysiologie des Plantes sous Stress Environnementaux (LEPSE); Francia Fil: Olmos, Sofía. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento Agronomía; Argentina. Fil: Cirilo, Alfredo Gabriel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; Argentina Fil: Otegui, María Elena. Consejo Nacional de Investigaciones, Científicas y Técnicas; Argentina Fil: Otegui, María Elena. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina 2023-11-29T13:59:32Z 2023-11-29T13:59:32Z 2016-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/16062 https://journals-crea.4science.it/index.php/maydica/article/view/1557 2279-8013 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Maydica-ist Sper Cerealicoltur Maydica 61 (4) : 1-13. (Diciembre 2016) |
| spellingShingle | Maíz Granos Tasa de Crecimiento Loci de Rasgos Cuantitativos Maize Grain Growth Rate Quantitative Trait Loci Kernel Filling Duration Protein Concentration Mandolino, Cecilia Ines D´Andrea, Karina Elizabeth Piedra, Carlina V. Alvarez Prado, Santiago Olmos, Sofía Eugenia Cirilo, Alfredo Gabriel Otegui, María Elena Kernel weight in maize: genetic control of its physiological and compositional determinants in a dent × flint-caribbean RIL population |
| title | Kernel weight in maize: genetic control of its physiological and compositional determinants in a dent × flint-caribbean RIL population |
| title_full | Kernel weight in maize: genetic control of its physiological and compositional determinants in a dent × flint-caribbean RIL population |
| title_fullStr | Kernel weight in maize: genetic control of its physiological and compositional determinants in a dent × flint-caribbean RIL population |
| title_full_unstemmed | Kernel weight in maize: genetic control of its physiological and compositional determinants in a dent × flint-caribbean RIL population |
| title_short | Kernel weight in maize: genetic control of its physiological and compositional determinants in a dent × flint-caribbean RIL population |
| title_sort | kernel weight in maize genetic control of its physiological and compositional determinants in a dent flint caribbean ril population |
| topic | Maíz Granos Tasa de Crecimiento Loci de Rasgos Cuantitativos Maize Grain Growth Rate Quantitative Trait Loci Kernel Filling Duration Protein Concentration |
| url | http://hdl.handle.net/20.500.12123/16062 https://journals-crea.4science.it/index.php/maydica/article/view/1557 |
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