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Effect of concentration of inoculum of Fusarium oxysporum f.sp. albedinis and of the method of inoculating in vitro date palm plantlets in the greenhouse on the evaluation of their resistance to bayoud

Al Awamia ( 88): 111-122

Effect of concentration of inoculum of Fusarium oxysporum f.sp. albedinis and of the method of inoculating in vitro date palm plantlets in the greenhouse on the evaluation of their resistance to bayoud

A study was made of the experimental conditions appropriate for testing the resistance of date palm plantlets to F. o. f.sp. albedinis. A comparison of the virulence of 5 isolates of the pathogen to the progeny of crosses made between 2 susceptible and 2 resistant parent plants, respectively, enabled the most virulent isolate to be selected for further tests.

Accession: 002811217

Related references

Sedra, M., H.; Besri, M., 1994: Evaluation of date palm resistance to bayoud disease due to Fusarium oxysporum f sp albedinis: Development of an efficient method for discriminating in vitro plantlets acclimatised in the glasshouse. In the Moroccan breeding program of the date palm to control bayoud disease, the clones selected in date palm groves from seedlings or by controlled breeding are only represented by one or few individuals. The clones selected on the criterion of f...

Sedra, M.H., 1994: Evaluation of the resistance of date palm cultivars to bayoud disease (Fusarium oxysporum f.sp. albedinis). Comparison of experimental inoculation methods in the field and nursery. Significant differences in soil receptivity to this disease were found in 10 samples of date soils in Zagora, Morocco. A method for inoculating date palm roots by injecting inoculum into the soil near roots is described. The method was tested unde...

Sedra, M.H., 1995: Screening of a collection of date palm genotypes for resistance to bayoud disease caused by Fusarium oxysporum f.sp. albedinis. Field and lab. experiments were conducted to select cultivars and clones with good fruit quality and resistance to F. oxysporum f.sp. albedinis. None of the 6 Iraqi and 6 Tunisian cultivars showed field resistance to bayoud disease. Of the 4 Moroc...

Sedra, M.H.; Maslouhy, M.A., 1995: Fusarium wilt of date palm (Bayoud). II. Inhibitory activity of filtrates of six antagonistic microorganisms isolated from Marrakech date palm grove soils towards Fusarium oxysporum f.sp. albedinis. The effect of filtrates from 9 microorganisms on in vitro germination and mycelial growth of F. oxysporum f.sp. albedinis was investigated. Of the microorganisms tested, 6 were antagonists isolated from Marrakech date palm grove soils, 4 Pseudomon...

Surico, G., 1977: Trials with benomyl for the control of bayoud (caused by Fusarium oxysporum f. sp. albedinis) of date palm. iI. uptake and transport of benomyl in adult palm trees and results of greenhouse experiments. Phytopathologia mediterranea: 16 (2 3) 69-74

Matheron B.; Benbadis A., 1985: Comparative study of the first stages of the date palm phoenix dactylifera infection with fusarium oxysporum f sp albedinis casual agent of bayoud and fusarium oxysporum f sp melonis. Date palm seedlings, are infected by 2 formae speciales of Fusarium oxysporum: albedinis, casual agent of Bayoud, and melonis, which causes wilt on melon. The first stages of the cryptogamic disease, observed by scanning electron microscope, show...

Surico, G., 1977: On the possible use of benomyl for controlling bayoud disease (caused by Fusarium oxysporum f. sp. albedinis) of date palm. II. The absorption and distribution of benomyl in adult plants and results of greenhouse tests on its effectiveness. Tabulated data show that benomyl was taken up by the second leaf and translocated to other leaves. Uptake via leaves and roots was facilitated by mixing benomyl with mineral oil. In greenhouse experiments the pathogen was not isolated from the pla...

Amir, H.S.baou, N., 1983: Date palm fusariosis. XII. Antagonsim in the soil of two actinomycetes vis-a-vis of Fusarium oxysporum. f. sp. albedinis, (Bayoud). Memoires de la Societe d'Histoire naturelle de l'Afrique du Nord: 3) 47-59

Vanachter, A., 1989: Strategies for the control of Bayoud disease of the date palm caused by Fusarium oxysporum f. sp. albedinis. NATO ASI series: Series H: Cell biology8(28): 501-513

Sedra, M.H., 1993: Morphological and cultural characterization of Fusarium oxysporum f.sp. albedinis, an agent of vascular wilt (Bayoud disease) of date palm. A total of 36 F. o. f.sp. albedinis isolates obtained from 10 varieties and 5 clones of date palms in various areas of Morocco was characterised. The first isolation of the pathogen from infected palm leaves in culture yielded 74.2% of isolates wi...