Résumés
Abstract
Water extracts from seed exudates of Tagetes erecta cv. Crackerjack and T. patula var. polynema caused significantly higher mortality (P < 0.05) to Heterodera schachtii, Meloidogyne hapla and Pratylenchus penetrans than the control extracts from radish, tomato and corn seeds, respectively. Marigold seed exudates consist of nematicidal compounds. Nematostatic compounds have not been found in the seed exudates. Two high-performance liquid chromatography fractions derived from T. erecta cv. Crackerjack and one from T. patula var. polynema caused the highest mortality of H. schachtii in comparison with a water control and the rest of the fractions.
Keywords:
- Nematicidal compounds,
- Tagetes erecta,
- Tagetes patula
Résumé
[Effet in vitro d’extraits liquides de graines de soucis sur des nématodes phytopathogènes]
La mortalité de Heterodera schachtii, Meloidogyne hapla, et de Pratylenchus penetrans causée par des extraits liquides obtenus à partir des graines de Tagetes erecta cv. Crackerjack et de T. patula var. polynema était significativement (P < 0,05) plus grande que chez les témoins. Les extraits de graines contiennent des produits avec un effet nématicide. Des produits nématostatiques n’ont pas été trouvés dans les extraits. Deux fractions de chromatographie liquide à haute performance dérivées de T. erecta cv. Crackerjack et une fraction dérivée de T. patula var. polynema ont causé la plus grande mortalité de H. schachtii en comparaison des témoins et du reste des fractions.
Mots clés:
- Tagetes erecta,
- Tagetes patula,
- composés nématicides
Parties annexes
References
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