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| Format: | Artículo científico |
| Language: | en |
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Instituto Nacional de Tecnología Agropecuaria
2025
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| Online Access: | https://www.redalyc.org/articulo.oa?id=86483126001 https://www.redalyc.org/journal/864/86483126001/ https://www.redalyc.org/journal/864/86483126001/html/ https://www.redalyc.org/journal/864/86483126001/86483126001.epub https://www.redalyc.org/journal/864/86483126001/movil |
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Table of Contents:
- Phenology and growth of Hirschfeldia incana biotypes from Core Region of Argentina Humid Pampas R.Javier Crespo F.A. Zanczuk C. Gosparini N. Montecchiarini Agrociencias cruciferous Mustard weeds photoblastism Hirschfeldia incana (L.) Lagr.-Foss, an exotic weed in Argentina, is well adapted to different climate, soil, and crop conditions, and is particularly abundant in the southern region of Santa Fe province. The design of rational weed management strategies requires detailed information on biotypes behavior and growth characteristics. The objectives of this work were to study: 1) the phenology and growth, and 2) the germination response under varying light and temperature conditions of different populations (L1 and L2) of H. incana from the southern region of Santa Fe Province. Under semi-controlled conditions, seeds from L1 and L2 populations were used to assess phenological parameters, growth, and seed production. In two additional experiments, we evaluated germination responses: Experiment 1) assessed the effect of blue, green, red, and white light, and darkness on germination (populations L1 and L2); Experiment 2) evaluated the effect of temperature (7–29°C) on germination (populations L1, L2, and a third population designated FH1). Plants from populations L1 and L2 exhibited similar phenological development but differed in rosette diameter (20 ± 3.3 cm vs. 26 ± 2.4 cm, respectively), resulting in differences in leaf area and greater silique and seed production output in the L2 population. In both populations, a photoblastic index near zero indicated light-insensitive seeds. Seeds germinated across a broad temperature range above 10°C, with maximum germination occurring between 19°C and 30°C. Additionally, H. incana seed viability declined two years after harvest. Further research is needed to better understand the mechanisms regulating physiological dormancy in H. incana and to develop strategies to enhance its germination independently of light. 2025 artículo científico 0325-8718 https://www.redalyc.org/articulo.oa?id=86483126001 https://www.redalyc.org/journal/864/86483126001/ https://www.redalyc.org/journal/864/86483126001/html/ https://www.redalyc.org/journal/864/86483126001/86483126001.epub https://www.redalyc.org/journal/864/86483126001/movil 10.58149/d3qn-bx20 en http://www.redalyc.org/revista.oa?id=864 RIA. Revista de Investigaciones Agropecuarias application/pdf Instituto Nacional de Tecnología Agropecuaria RIA. Revista de Investigaciones Agropecuarias (Argentina) Num.3 Vol.51