Variation of seed dormancy and longevity in Raphanus raphanistrum L
| Autor: | Annick Matejicek, Henri Darmency, Yann Tricault |
|---|---|
| Přispěvatelé: | Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Institut National de la Recherche Agronomique (INRA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Agroécologie [Dijon], Université de Bourgogne (UB)-Institut National de la Recherche Agronomique (INRA)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST, Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université Bourgogne Franche-Comté [COMUE] (UBFC) |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
dormancy Soil seed bank [SDV]Life Sciences [q-bio] media_common.quotation_subject Population adaptation Plant Science Raphanus raphanistrum 01 natural sciences longevity emergence [SDV.BV]Life Sciences [q-bio]/Vegetal Biology education model seed bank media_common 2. Zero hunger education.field_of_study biology Seed dormancy Longevity food and beverages 04 agricultural and veterinary sciences 15. Life on land biology.organism_classification germination Agronomy Germination [SDE]Environmental Sciences 040103 agronomy & agriculture wild radish 0401 agriculture forestry and fisheries Dormancy Weed 010606 plant biology & botany |
| Zdroj: | Seed Science Research Seed Science Research, Cambridge University Press (CUP), 2018, 28 (1), pp.34-40. ⟨10.1017/S0960258517000319⟩ Seed Science Research, 2018, 28 (1), pp.34-40. ⟨10.1017/S0960258517000319⟩ |
| ISSN: | 1475-2735 0960-2585 |
| DOI: | 10.1017/s0960258517000319 |
| Popis: | Raphanus raphanistrum (wild radish) is a highly competitive weed in winter crops. Integrated weed management practices and decision-making tools benefit from the ability to predict seed longevity and dormancy status in the soil seed bank, as well as time and density of emergence in the field. We wondered if unique values taken from databases could serve for modelling purposes, whatever the origins of the weed populations. We investigated dormancy and longevity of fruits buried in the soil over a four-year seed burial experiment of two highly contrasted populations that differ by their biogeographical origin (oceanic versus continental climate), their habitat (arable field versus undisturbed) and their fruit size (thick versus thin fruit wall). High viability persisted over two years, followed by a rapid reduction, especially for the ‘continental-undisturbed-thin’ population. Dormancy cycling, with dormancy at its lowest in October, was observed for the ‘oceanic-arable-thick’ population, whilst a slow decrease without clear seasonal pattern was found for the other population. These results indicate different ways of regulating seed persistence in the soil, which might be taken into account when building demographic models. These differences could be due to interactions between fruit wall thickness and the other factors; it is possible that a thicker fruit wall increases longevity by promoting dormancy by physical restriction, but depending on temperature. Thinner fruit walls would make plants display other adaptive strategies to maximize survival time in the soil seed bank. Studies involving more populations and isogenic material are needed to address this specific question. |
| Databáze: | OpenAIRE |
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