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  • 1975-1979  (3)
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  • 1
    Publication Date: 1978-12-01
    Print ISSN: 0032-079X
    Electronic ISSN: 1573-5036
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Springer
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  • 2
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Resume Les auteurs étudient chez la tomate l'influence de la concentration saline et du rapport Na/Ca du milieu nutritif sur le développement de la fusariose vasculaire. A concentration saline élevée (50,4 meq/l), les plantes fanent tardivement mais brusquement et sans jaunissement préalable. La colonisation des tiges parF. oxysporum f. sp.lycopersici est tardive et faible; cependant à rapport Na/Ca élevé, elle augmente rapidement. Il n'y a pas d'acides aminés détectables dans la sève des plantes de 14 jours mais la teneur en N inorganique est toujours supérieure à 2.8 μg/ml. A concentration saline faible (2.5 meq/l), les feuilles jaunissent progressivement et précocement. La colonisation du xylème est précoce et dense; l'influence du rapport Na/Ca est faible. Les acides aminés sont présents dans la sève en quantités relativement importantes et d'autant plus que le Na/Ca croît. Ces résultats de l'évolution de la maladie sont discutés en relation avec la composition chimique des tissus et de la sève et la localisation histochimique du Na et du Ca.
    Notes: Summary The influence of the salt concentration and of the Na/Ca ratio of the nutrient solution on the development of the fusarial wilt of the tomato has been studied. At high salt concentration (50.4 meq/l), plants wilt lately but suddenly without yellowing. The stem colonization byF. oxysporum f. sp.lycopersici is poor and late; however at higher Na/Ca it increases rapidly. There are no amino acids detectable in xylem sap of 14 days old plants but the content of inorganic N is always higher than 2.8μg/ml. At low salt concentration (2.5 meq/l), the yellowing of the leaves begins early and progressively. The xylem colonization by the parasite is dense and precocious; the influence of the Na/Ca is weak. The amino-acids are relatively abundant in xylem sap and their content increases with the increase of the Na/Ca ratio. These results of the development of the disease are discussed in relation to the chemical composition of the tissues and the xylem sap and the histochemical localization of Na and Ca.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Resume Les auteurs étudient chez la tomate l'influence de la concentration saline et du rapport Na/Ca du milieu nutritif sur le développement de la fusariose vasculaire. A concentration saline élevée (50,4 meq/l), les plantes fanent tardivement mais brusquement et sans jaunissement préalable. La colonisation des tiges parF. oxysporum f. sp.lycopersici est tardive et faible; cependant à rapport Na/Ca élevé, elle augmente rapidement. Il n'y a pas d'acides aminés détectables dans la sève des plantes de 14 jours mais la teneur en N inorganique est toujours supérieure à 2.8 μg/ml. A concentration saline faible (2.5 meq/l), les feuilles jaunissent progressivement et précocement. La colonisation du xylème est précoce et dense; l'influence du rapport Na/Ca est faible. Les acides aminés sont présents dans la sève en quantités relativement importantes et d'autant plus que le Na/Ca croît. Ces résultats de l'évolution de la maladie sont discutés en relation avec la composition chimique des tissus et de la sève et la localisation histochimique du Na et du Ca.
    Notes: Summary The influence of the salt concentration and of the Na/Ca ratio of the nutrient solution on the development of the fusarial wilt of the tomato has been studied. At high salt concentration (50.4 meq/l), plants wilt lately but suddenly without yellowing. The stem colonization byF. oxysporum f. sp.lycopersici is poor and late; however at higher Na/Ca it increases rapidly. There are no amino acids detectable in xylem sap of 14 days old plants but the content of inorganic N is always higher than 2.8μg/ml. At low salt concentration (2.5 meq/l), the yellowing of the leaves begins early and progressively. The xylem colonization by the parasite is dense and precocious; the influence of the Na/Ca is weak. The amino-acids are relatively abundant in xylem sap and their content increases with the increase of the Na/Ca ratio. These results of the development of the disease are discussed in relation to the chemical composition of the tissues and the xylem sap and the histochemical localization of Na and Ca.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
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