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Clément Dusserre - One of the best experts on this subject based on the ideXlab platform.
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Comprendre les conditions de développement de Rumex crispus via une approche fonctionnelle, en vue de sa gestion en agriculture biologique
2019Co-Authors: Clément DusserreAbstract:Les adventices sont très problématiques et nuisibles en agriculture biologique. C’est le cas des Rumex (Rumex crispus et Rumex obtusifolius), présents en grandes cultures biologiques partout en France. Le projet CAPABLE, piloté par l’ITAB et auquel l’Acta et le CEFE participent, cherche à trouver des méthodes de lutte innovantes contre ces adventices. Lors de ce stage, nous avons étudié en conditions contrôlées trois étapes clés du cycle de développement de Rumex crispus : la germination, le développement des plantules et la régénération racinaire au stade adulte. Les résultats ont montré que la germination était favorisée par la lumière et les changements de température, mais défavorisée par l’enfouissement. L’interaction avec des légumineuses n’a montré aucun effet. Le développement des plantules est ensuite rapide et important, surtout au niveau racinaire. La régénération des pivots de Rumex est essentiellement assurée par la partie racinaire supérieure. Les parties racinaires inférieures n’ont presque pas régénéré. Plus les pivots sont enfouis profondément, plus la régénération prend du temps. Cependant, la profondeur d’enfouissement, la coupe racinaire, l’âge des pivots ou la masse racinaire initiale n’ont pas montré énormément d’influence sur le développement des individus régénérés. Seul le temps de régénération pourrait donner un avantage compétitif par rapport à la culture. De cela, des idées de lutte agronomique ont pu être proposées.
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comprendre les conditions de developpement de Rumex crispus via une approche fonctionnelle en vue de sa gestion en agriculture biologique
2019Co-Authors: Clément DusserreAbstract:Les adventices sont tres problematiques et nuisibles en agriculture biologique. C’est le cas des Rumex (Rumex crispus et Rumex obtusifolius), presents en grandes cultures biologiques partout en France. Le projet CAPABLE, pilote par l’ITAB et auquel l’Acta et le CEFE participent, cherche a trouver des methodes de lutte innovantes contre ces adventices. Lors de ce stage, nous avons etudie en conditions controlees trois etapes cles du cycle de developpement de Rumex crispus : la germination, le developpement des plantules et la regeneration racinaire au stade adulte. Les resultats ont montre que la germination etait favorisee par la lumiere et les changements de temperature, mais defavorisee par l’enfouissement. L’interaction avec des legumineuses n’a montre aucun effet. Le developpement des plantules est ensuite rapide et important, surtout au niveau racinaire. La regeneration des pivots de Rumex est essentiellement assuree par la partie racinaire superieure. Les parties racinaires inferieures n’ont presque pas regenere. Plus les pivots sont enfouis profondement, plus la regeneration prend du temps. Cependant, la profondeur d’enfouissement, la coupe racinaire, l’âge des pivots ou la masse racinaire initiale n’ont pas montre enormement d’influence sur le developpement des individus regeneres. Seul le temps de regeneration pourrait donner un avantage competitif par rapport a la culture. De cela, des idees de lutte agronomique ont pu etre proposees.
Serhat Demir - One of the best experts on this subject based on the ideXlab platform.
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Determination of antioxidant properties of Rumex crispus and Scrophularia canina subsp. bicolor
International Journal of Secondary Metabolite, 2017Co-Authors: Serhat Demir, Buket Bozkurt, Mustafa Ali Önür, İrem Gülen Kaya, Nehir Unver SomerAbstract:Methanol and ethyl acetate extracts of Rumex crispus L. and Scrophularia canina L. subsp. bicolor (SM.) Greuter were tested for their antioxidant activity using the DPPH method. Extracts were prepared from the above-ground parts of these plants. Significant antioxidant activity was determined for methanol (IC 50 : 4.16 µg/mL) and ethyl acetate (IC 50 : 8.71 µg/mL) extracts of Rumex crispus . Moreover, methanol (IC 50 : 60.78 µg/mL) and ethyl acetate (IC 50 : 149.33 µg/mL) extracts of Scrophularia canina subsp . bicolor (SM.) Greuter were shown to have important free radical scavenging antioxidant activity.
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Determination of antioxidant properties of Rumex crispus and Scrophularia canina subsp. bicolor
2017Co-Authors: Serhat Demir, Buket Bozkurt, Mustafa Ali Önür, İrem Gülen Kaya, Nehir Ünver-somerAbstract:Methanol and ethyl acetate extracts of Rumex crispus L. and Scrophularia canina L. subsp. bicolor (SM.) Greuter were tested for their antioxidant activity using the DPPH method. Extracts were prepared from the above-ground parts of these plants. Significant antioxidant activity was determined for methanol (IC50: 4.16 µg/mL) and ethyl acetate (IC50: 8.71 µg/mL) extracts of Rumex crispus. Moreover, methanol (IC50: 60.78 µg/mL) and ethyl acetate (IC50: 149.33 µg/mL) extracts of Scrophularia canina subsp. bicolor (SM.) Greuter were shown to have important free radical scavenging antioxidant activity.Methanol and ethyl acetate extracts of Rumex crispus L. and Scrophularia canina L. subsp. bicolor (SM.) Greuter were tested for their antioxidant activity using the DPPH method. Extracts were prepared from the above-ground parts of these plants. Significant antioxidant activity was determined for methanol (IC50: 4.16 µg/mL) and ethyl acetate (IC50: 8.71 µg/mL) extracts of Rumex crispus. Moreover, methanol (IC50: 60.78 µg/mL) and ethyl acetate (IC50: 149.33 µg/mL) extracts of Scrophularia canina subsp. bicolor (SM.) Greuter were shown to have important free radical scavenging antioxidant activity
Nehir Ünver-somer - One of the best experts on this subject based on the ideXlab platform.
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Determination of antioxidant properties of Rumex crispus and Scrophularia canina subsp. bicolor
2017Co-Authors: Serhat Demir, Buket Bozkurt, Mustafa Ali Önür, İrem Gülen Kaya, Nehir Ünver-somerAbstract:Methanol and ethyl acetate extracts of Rumex crispus L. and Scrophularia canina L. subsp. bicolor (SM.) Greuter were tested for their antioxidant activity using the DPPH method. Extracts were prepared from the above-ground parts of these plants. Significant antioxidant activity was determined for methanol (IC50: 4.16 µg/mL) and ethyl acetate (IC50: 8.71 µg/mL) extracts of Rumex crispus. Moreover, methanol (IC50: 60.78 µg/mL) and ethyl acetate (IC50: 149.33 µg/mL) extracts of Scrophularia canina subsp. bicolor (SM.) Greuter were shown to have important free radical scavenging antioxidant activity.Methanol and ethyl acetate extracts of Rumex crispus L. and Scrophularia canina L. subsp. bicolor (SM.) Greuter were tested for their antioxidant activity using the DPPH method. Extracts were prepared from the above-ground parts of these plants. Significant antioxidant activity was determined for methanol (IC50: 4.16 µg/mL) and ethyl acetate (IC50: 8.71 µg/mL) extracts of Rumex crispus. Moreover, methanol (IC50: 60.78 µg/mL) and ethyl acetate (IC50: 149.33 µg/mL) extracts of Scrophularia canina subsp. bicolor (SM.) Greuter were shown to have important free radical scavenging antioxidant activity
Nehir Unver Somer - One of the best experts on this subject based on the ideXlab platform.
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Determination of antioxidant properties of Rumex crispus and Scrophularia canina subsp. bicolor
International Journal of Secondary Metabolite, 2017Co-Authors: Serhat Demir, Buket Bozkurt, Mustafa Ali Önür, İrem Gülen Kaya, Nehir Unver SomerAbstract:Methanol and ethyl acetate extracts of Rumex crispus L. and Scrophularia canina L. subsp. bicolor (SM.) Greuter were tested for their antioxidant activity using the DPPH method. Extracts were prepared from the above-ground parts of these plants. Significant antioxidant activity was determined for methanol (IC 50 : 4.16 µg/mL) and ethyl acetate (IC 50 : 8.71 µg/mL) extracts of Rumex crispus . Moreover, methanol (IC 50 : 60.78 µg/mL) and ethyl acetate (IC 50 : 149.33 µg/mL) extracts of Scrophularia canina subsp . bicolor (SM.) Greuter were shown to have important free radical scavenging antioxidant activity.
Buket Bozkurt - One of the best experts on this subject based on the ideXlab platform.
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Determination of antioxidant properties of Rumex crispus and Scrophularia canina subsp. bicolor
International Journal of Secondary Metabolite, 2017Co-Authors: Serhat Demir, Buket Bozkurt, Mustafa Ali Önür, İrem Gülen Kaya, Nehir Unver SomerAbstract:Methanol and ethyl acetate extracts of Rumex crispus L. and Scrophularia canina L. subsp. bicolor (SM.) Greuter were tested for their antioxidant activity using the DPPH method. Extracts were prepared from the above-ground parts of these plants. Significant antioxidant activity was determined for methanol (IC 50 : 4.16 µg/mL) and ethyl acetate (IC 50 : 8.71 µg/mL) extracts of Rumex crispus . Moreover, methanol (IC 50 : 60.78 µg/mL) and ethyl acetate (IC 50 : 149.33 µg/mL) extracts of Scrophularia canina subsp . bicolor (SM.) Greuter were shown to have important free radical scavenging antioxidant activity.
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Determination of antioxidant properties of Rumex crispus and Scrophularia canina subsp. bicolor
2017Co-Authors: Serhat Demir, Buket Bozkurt, Mustafa Ali Önür, İrem Gülen Kaya, Nehir Ünver-somerAbstract:Methanol and ethyl acetate extracts of Rumex crispus L. and Scrophularia canina L. subsp. bicolor (SM.) Greuter were tested for their antioxidant activity using the DPPH method. Extracts were prepared from the above-ground parts of these plants. Significant antioxidant activity was determined for methanol (IC50: 4.16 µg/mL) and ethyl acetate (IC50: 8.71 µg/mL) extracts of Rumex crispus. Moreover, methanol (IC50: 60.78 µg/mL) and ethyl acetate (IC50: 149.33 µg/mL) extracts of Scrophularia canina subsp. bicolor (SM.) Greuter were shown to have important free radical scavenging antioxidant activity.Methanol and ethyl acetate extracts of Rumex crispus L. and Scrophularia canina L. subsp. bicolor (SM.) Greuter were tested for their antioxidant activity using the DPPH method. Extracts were prepared from the above-ground parts of these plants. Significant antioxidant activity was determined for methanol (IC50: 4.16 µg/mL) and ethyl acetate (IC50: 8.71 µg/mL) extracts of Rumex crispus. Moreover, methanol (IC50: 60.78 µg/mL) and ethyl acetate (IC50: 149.33 µg/mL) extracts of Scrophularia canina subsp. bicolor (SM.) Greuter were shown to have important free radical scavenging antioxidant activity
