SENSIBILITE DE CULTIVARS DE Dioscorea alata, D. cayenensis ET D. trîfida AUX NEMATODES Meloidogyne incognita, Pratylenchus coffeae ET Scutellomena bradys

A. Kermarrec, A. Anais, R. Arnolin, F. Gamiette, M.H. Degranges and F. Dos Santos

No 259912, 25th Annual Meeting, July 1-6, 1989, Gosier, Guadeloupe from Caribbean Food Crops Society

Abstract: Un test précoce de sensibilité aux nématodes est proposé sur jeunes plantules issues de graines, de boutures de tiges et de vitro-plants. Une image globale des sensibilités de trois espèces d'ignames (Dioscorea alata, D. cayenensis, D. trîfida ) au parasitisme contrôlé de trois nématodes (Meloidogyneincognita, Pratylenchus coffeae, Scutellonema bradys) a été obtenue à partir de vitro-plants de diverses variétés. La variété «Plimbite» (D. alata) parait nettement intéressante et quelques plants de D. cayenensis issus de graines du Nigéria semblent résistants àP. coffeae. EVALUATION OF SUSCEPTIBILITES OF YAM CULTIVARS (D. alata, D. cayenensis, D. trîfida) TO SOIL NEMATODES : Meloidogyne incognita, Pratylenchus coffeae AND Scutellonema bradys An early susceptibility test is proposed on young plants obtained from seeds, stem cuttings and vitro-plants. An analysis of the resistance of various yam cultivars to the 3 most important parasitic nematodes (Meloidogyne incognita, Pratylenchus coffeae, Scutellonema bradys) is given through controlled inoculations in greenhouse conditions on vitroplants and seedlings. «Plimbite», a D. alata variety, seems most interesting and some nigérian seedlings of D. cayenensis appear resistant to P. coffeae .

Keywords: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies (search for similar items in EconPapers)
Pages: 12
Date: 1989-07-01
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Persistent link: https://EconPapers.repec.org/RePEc:ags:cfcs89:259912

DOI: 10.22004/ag.econ.259912

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