1984
DOI: 10.1051/agro:19840710
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Evolution de la capacité de germination des semences de mauvaises herbes enfouies dans le sol

Abstract: Des semences de 4 espèces de mauvaises herbes, Aethusa cynapium L., Alopecurus myosuroides Huds., Euphorbia exigua L. et Matricaria perforata Mérat, sont disposées dans des sachets de tergal enfouis dans le sol à une profondeur de 10 et 25 cm. Toutes les 3 semaines, et durant 28 mois, des sachets sont prélevés pour évaluer en laboratoire la capacité germinative des semences restantes. Parallèlement, la chronologie de levée de ces mêmes espèces est étudiée sur 2 dispositifs : dans un peuplement naturel sous cul… Show more

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Cited by 20 publications
(18 citation statements)
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“…This is consistent with previous reports but, as most authors do not indicate whether they tested their seeds for caryopsis presence, it is not possible to determine whether they really observed an effect of seed population as such. Differences between populations seem to disappear for older seeds, as the proportions of germinated older dry‐stored seeds varied little among seed populations and were close to those reported by Lonchamp et al . (1984), i.e.…”
Section: Discussionsupporting
confidence: 92%
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“…This is consistent with previous reports but, as most authors do not indicate whether they tested their seeds for caryopsis presence, it is not possible to determine whether they really observed an effect of seed population as such. Differences between populations seem to disappear for older seeds, as the proportions of germinated older dry‐stored seeds varied little among seed populations and were close to those reported by Lonchamp et al . (1984), i.e.…”
Section: Discussionsupporting
confidence: 92%
“…These results are consistent with numerous previous reports (see above) and are explained by loss of primary dormancy (Wellington & Hitchings, 1965; Barralis, 1970). This explanation is consistent with the decrease in light sensitivity with seed age observed in this study and by other authors (Barralis, 1968; Lonchamp et al ., 1984). Previous reports also indicated that light has a stimulating effect on secondary dormancy in soil‐stored seeds after winter (Lonchamp et al ., 1984), whereas in the present study, light vs. darkness little influenced germination of the soil‐stored seeds.…”
Section: Discussionmentioning
confidence: 99%
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“…Les trois principaux facteurs qui ont été identifiés comme ayant des répercussions majeures sur la germination des graines sont la température, l'humidité et la lumière (Hilton 1985a;Zimdahl et al 1988). L'importance relative de ces facteurs varie considérablement entre les régions et les pays et peut aussi changer selon l'évolution du climat au cours de la saison (Baskin et Baskin 1990;Hékans-son 1992;Longchamp et al 1984). Par exemple, dans une région à climat froid, la température est un facteur critique pour déterminer le moment de la germination des mauvaises herbes.…”
Section: Germinationunclassified