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Bananas cultivated for export all belong to Cavendish cultivars and are all recognized as very susceptible to nematodes, particularly to the burrowing nematode Radopholus similis and the lesion nematode Pratylenchus coffeae. Even if there have been many changes in the management of banana nematodes in large commercial banana plantations, chemical control still remains most often the last resort method...
We have demonstrated that the aminopropyl stationary phase (APS2) already used for analysis of polar compounds in hydrophilic interaction liquid chromatography can be successfully used in capillary electrochromatography. First, it was shown that the APS2 packing material affords a sustainable electroosmotic flow, the direction and magnitude of which depend on the nature of the electrolyte ions. A...
A new family of planets is considered which is in between the rocky terrestrial planets and the gaseous giants, ''Ocean-Planets.'' We present the possible formation, composition and internal structure of these putative planets. We consider their oceans, as well as their possible Exobiology interest. These exoplanets should be detectable by Space missions such as Eddington, Kepler, and possibly COROT...
introduction. Genetic breeding, based on developing nematode resistance or tolerance, has considerable potential for nematode control in bananas. varietal screening. In Cameroon, trials of varietal screening for banana resistance to Radopholus similis have shown promising results. However, results for Pratylenchus goodeyi are still only preliminary. resistance mechanism. The resistance mechanisms...
But. - Evaluer la prevalence de l'infection a VHC chez la femme enceinte et la transmission verticale du VHC en relation avec la charge virale et le genotype. Methodes. - Un depistage des anticorps anti-VHC par Elisa et Riba a ete effectue chez 5389 femmes enceintes, dans trois maternites publiques et privee durant l'annee 94. Pour les meres anti-VHC positives, l'ARN du VHC etait recherche par...
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