Ecophysiological and molecular analysis of contrasting genotypes for leaf senescence in sunflower [Helianthus annuus L.] under differential doses of N in soil
Leaf senescence in plants is the last stage of leaf development and is characterized by a decline in photosynthetic activity, an active degeneration of cellular structures, and the recycling of accumulated nutrients to areas of active growth, such as buds, young leaves, flowers, fruits, and seeds. T...
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| Acceso en línea: | http://ri.agro.uba.ar/files/download/articulo/2024becheran.pdf LINK AL EDITOR |
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| 024 | |a 10.3390/plants13243540 | ||
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| 245 | 0 | 0 | |a Ecophysiological and molecular analysis of contrasting genotypes for leaf senescence in sunflower [Helianthus annuus L.] under differential doses of N in soil |
| 520 | |a Leaf senescence in plants is the last stage of leaf development and is characterized by a decline in photosynthetic activity, an active degeneration of cellular structures, and the recycling of accumulated nutrients to areas of active growth, such as buds, young leaves, flowers, fruits, and seeds. This process holds economic significance as it can impact yield, influencing the plant’s ability to maintain an active photosynthetic system during prolonged periods, especially during the grain filling stage, which affects plant weight and oil content. It can be associated with different stresses or environmental conditions, manifesting itself widely in the context of climate change and limiting yield, especially in crops of agronomic relevance. In this work, we study the stability of two widely described sunflower (Helianthus annuus L.) genotypes belonging to the INTA Breeding Program against differential N conditions, to verify their yield stability in control conditions and under N supply. Two inbred lines were utilized, namely R453 (early senescence) and B481-6 (late senescence), with contrasting nitrogen availability in the soil but sharing the same ontogeny cycle length. It was observed that, starting from R5.5, the B481-6 genotype not only delayed senescence but also exhibited a positive response to increased nitrogen availability in the soil. This response included an increase in intercepted radiation, resulting in a statistically significant enhancement in grain yield. Conversely, the R453 genotype did not show significant differences under varying nitrogen availability and exhibited a tendency to decrease grain yield when nitrogen availability was increased. The response to nitrogen can vary depending on the specific genotype. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | |a SENESCENCE | ||
| 653 | |a SUNFLOWER | ||
| 653 | |a YIELD | ||
| 653 | |a NITROGEN | ||
| 700 | 1 | |a Becheran, Daniela Evangelina |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cultivos Industriales .Buenos Aires, Argentina. |9 37149 | |
| 700 | 1 | |a Corzo, Melanie A. |u Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología. Buenos Aires, Argentina. |u CONICET - Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología. Buenos Aires, Argentina. |9 78405 | |
| 700 | 1 | |a Ploschuk, Edmundo Leonardo |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Cultivos Industriales. Buenos Aires, Argentina. |9 6393 | |
| 700 | 1 | |a Nicosia, Salvador |u Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología. Buenos Aires, Argentina. |u CONICET - Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología. Buenos Aires, Argentina. |9 78406 | |
| 700 | 1 | |a Moschen, Sebastián |u CONICET. Famaillá, Tucumán, Argentina. |9 69302 | |
| 700 | 1 | |a Bengoa Luoni, Sofía |u Wageningen University and Research. Laboratory of Genetics. Wageningen, The Netherlands. |9 78407 | |
| 700 | 1 | |a Di Rienzo, Julio Alejandro |u Universidad Nacional de Córdoba. Facultad de Ciencias Agrarias. Córdoba, Argentina. |9 12906 | |
| 700 | 1 | |a Heinz, Nicolás |u Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi (EEA Manfredi). Córdoba, Argentina. |9 78408 | |
| 700 | 1 | |a Alvarez, Daniel |u Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi (EEA Manfredi). Córdoba, Argentina. |9 78409 | |
| 700 | 1 | |a Fernández, Paula del Carmen |u Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología. Buenos Aires, Argentina. |u CONICET - Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología. Buenos Aires, Argentina. |9 11649 | |
| 773 | 0 | |t Plants |g Vol.13, no.24 (2024), art.3540, tbls., grafs. | |
| 856 | |f 2024becheran |i En internet |q application/pdf |u http://ri.agro.uba.ar/files/download/articulo/2024becheran.pdf |x ARTI202505 | ||
| 856 | |u http://www.mdpi.com |z LINK AL EDITOR | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||