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Understanding the inheritance of maize (Zea mays L.) kernel weight (KW) under contrasting nitrogen (N) supply is crucial for obtaining high KW across diverse N conditions. This work evaluated broad-sense heritability (H2), general combining ability (GCA), and specific combining ability (SCA) under contrasting N levels for (i) KW and kernel number per plant and (ii) grain-filling traits represented by the duration of lag and effective filling phases,
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dc.contributor.author | Hisse, Ignacio R. | |
dc.contributor.author | D’Andrea, Karina Elizabeth | |
dc.contributor.author | Otegui, María Elena | |
dc.date.accessioned | 2023-03-10T15:37:12Z | |
dc.date.available | 2023-03-10T15:37:12Z | |
dc.date.issued | 2023-02 | |
dc.identifier.issn | 1435-0645 | |
dc.identifier.other | https://doi.org/10.1002/agj2.21261 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12123/14201 | |
dc.identifier.uri | https://acsess.onlinelibrary.wiley.com/doi/full/10.1002/agj2.21261 | |
dc.description.abstract | Understanding the inheritance of maize (Zea mays L.) kernel weight (KW) under contrasting nitrogen (N) supply is crucial for obtaining high KW across diverse N conditions. This work evaluated broad-sense heritability (H2), general combining ability (GCA), and specific combining ability (SCA) under contrasting N levels for (i) KW and kernel number per plant and (ii) grain-filling traits represented by the duration of lag and effective filling phases, kernel growth and desiccation rates, maximum water content and volume, and moisture content at physiological maturity. A six-parent full diallel cross generated via Griffing's method 3 was tested under high (N200) and low (N0) N supply in 2 years (Y). For the various traits: (i) F1 hybrid, and F1 by Y and/or N interactions were significant (p < 0.05); (ii) GCA was significant at both N levels and affected (p < 0.05) by the Y effect; (iii) SCA was important (p < 0.05) only at N200; and (iv) GCA sum of squares was higher than those of SCA (except for KW). For KW and grain-filling traits, H2 and GCA/SCA ratios were higher at N0 than at N200, suggesting low-N environments would be more advantageous for developing genetic selection. Lag-phase duration (LPD), kernel desiccation rate (KDR), and kernel maximum water content (KWCMAX) had higher H2 (≥0.70) and GCA/SCA ratio than KW, particularly under N0. Thus, the highest KW hybrid (LP2×LP662) was composed of inbreds with high GCA for LPD, KDR and KWCMAX, revealing superior KW hybrids could be selected from the GCA of mentioned traits. | eng |
dc.format | application/pdf | es_AR |
dc.language.iso | spa | es_AR |
dc.publisher | Wiley | es_AR |
dc.relation | info:eu-repograntAgreement/INTA/PNCYO-1127042/AR./Bases ecofisiológicas para el mejoramiento genético y la calidad diferenciada de cereales y oleaginosas. | |
dc.rights | info:eu-repo/semantics/restrictedAccess | es_AR |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | es_AR |
dc.source | Agronomy Journal 115 (1) : 1–14. (January- February 2023) | es_AR |
dc.subject | Maíz | es_AR |
dc.subject | Maize | eng |
dc.subject | Granos | es_AR |
dc.subject | Grain | eng |
dc.subject | Heredabilidad | es_AR |
dc.subject | Heritability | eng |
dc.subject | Nitrógeno | es_AR |
dc.subject | Nitrogen | eng |
dc.subject | Peso de las Semillas | es_AR |
dc.subject | Seed Weight | eng |
dc.subject | Llenado | es_AR |
dc.subject | Filling | eng |
dc.subject.other | Grano de Maíz | es_AR |
dc.subject.other | Kernel Desiccation Rate | eng |
dc.subject.other | Kernel Growth Rate | eng |
dc.title | Diallel analysis of kernel weight and grain-filling traits in maize grown under contrasting nitrogen supply | es_AR |
dc.type | info:ar-repo/semantics/artículo | es_AR |
dc.type | info:eu-repo/semantics/article | es_AR |
dc.type | info:eu-repo/semantics/publishedVersion | es_AR |
dc.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | es_AR |
dc.description.origen | EEA Pergamino | es_AR |
dc.description.fil | Fil: Hisse, Ignacio R. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina | es_AR |
dc.description.fil | Fil: Hisse, Ignacio R. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina | es_AR |
dc.description.fil | Fil: D’Andrea, Karina E. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina | es_AR |
dc.description.fil | Fil: D’Andrea, Karina E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina | es_AR |
dc.description.fil | Fil: Otegui, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; Argentina | es_AR |
dc.description.fil | Fil: Otegui, María E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina | es_AR |
dc.description.fil | Fil: Otegui, María E. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina | es_AR |
dc.subtype | cientifico |
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